300 blk velocity barrel length

Exterior Ballistics. When we look at exterior ballistics (how the bullet flies through the air), 5.56 is actually a much better performer than .300 BLK. 5.56 NATO has a much flatter trajectory than .300 BLK, even though .300 BLK has a sleeker, more aerodynamic projectile design. That’s because .300 BLK travels slower than 5.56.

For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. Attaching a 6″ suppressor to this barrel length results in a total length of 14″ to …Designed for 300 BLK; SAAMI Max OAL: 2.260″ Maximum Velocity: 1300 FPS; Test Rifle. For the testing performed as a part of putting this article together, I used the following AR-15 rifle configuration: Anderson Manufacturing AR-15 300 Blackout Upper: 16″ Carbine length barrel, 1:8 twist; Carbine length gas setupThe .300 BLK has easily been the most successful new caliber in the last 20 years. Besides the easy conversion between 5.56 and .300 BLK, the .300 BLK does a lot the 5.56 can’t. First off, it’s a very versatile load with projectiles weights ranging from 110 grains to 220 grains. (L to R) 5.56 NATO, .300 BLK, .30 Carbine. gunmade ... Loading... Cor-Bon subsonic data is: .300 Blackout 240 grain; muzzle velocity 1000 FPS, muzzle energy 533 ft-lbs. That is more muzzle energy than a 230-grain .45 ACP load yet includes the ability to fire more accurately and at greater distance while utilizing the same 30-round magazines you already have.In physics, the three types of acceleration are changes in speed, direction and both simultaneously. The word “velocity” is often used in place of speed. A person can calculate the...The 'optimum' barrel length for .300 BLK is 16". My SBR is 10.5" with a 1:7 twist and it works just fine. Posted: 4/22/2022 9:13:38 PM EDT. [#18] 16" is probably the ideal length from a ballistics perspective but not ideal from a "get the best out of the gun" perspective. That ideal is closer to 10" plus or minus.

Introduction. Released by Winchester in 1952 (and adopted by NATO in 1954 as the 7.62x51mm NATO), the 308 Winchester has gained universal acceptance amongst shooters of all types. Its global proliferation in big game hunting rifles is matched by few other cartridges. Nearly every target shooter had his teeth cut on a 308 Winchester.Notes: Only ammo tested to have all five rounds stay in the gel. Hornady Black Subsonic. Bullet Weight: 208 Grains. Bullet Type: A-Max Polymer Tip. Avg. Muzzle Velocity: 965 fps. Avg. Muzzle Energy: 468 ft/lbs. Bullet Drop at 50 yds: 0.7 inches. Bullet Drop at 100 yds: 8.78 inches. Energy at 100 yards: 442 ft/lbs.Hornady’s .300 BLK 125-grain HP offering brings a quality option for those looking for a defensive-style round. ... Measured velocity using a Garmin Xero C1 Pro for a 5 shot average was 2186 fps for the 8.5” barrel. ... When you order they even ask for barrel length and twist to make sure they get you the proper round. June 24, 2020 3:34 pm ...Many people get speed and velocity confused. It's no surprise because the terms are often used interchangeably. But they're not quite the same thing. So how do you find the velocit...imherefortheprocess. •. 300aac was created for the sole intention of subsonic shooting out of a short barrel for CQB. If you are shooting 110gn, than you chose the wrong caliber for your application. There's is a miniscule amount of velocity difference out of subsonic rounds between a 5.5" barrel and a 50" barrel.With a 9" barrel and 7" shroud length the overall length would meet the 16" requirement w/ or without the suppressor. With a 9" suppressor, 2" would extend beyond the shroud and the overall barrel length would be 18". I would shoot subs and supers, and would develop loads for both.300 Blackout 110 gr V-MAX® Hornady BLACK ® Item #80873 | 20/Box . Hornady BLACK ® ammunition features versatile loads optimized for excellent performance from America’s favorite guns. Loaded with legendary Hornady ® bullets, Hornady BLACK ® ammunition is designed to fit, feed and function in a variety of platforms. Find a Retailer

The Faxon Firearms AR-15 Barrels .300 Blackout Gunner Profile comes in three distinct barrel lengths, two pistol barrels at 7.5″ and 10.5″ and a legal carbine 16″ barrel. The QPQ nitride finish with an additional NP3 coating makes this barrel nearly impervious to surface wear, rust, and corrosion.Odin Works 300 BLK AR-15 Barrel 1:8 Pistol Length Medium Contour 16.1" w/Gas Block. View Details. $313.50 . In Stock . Odin Works 300 BLK AR-15 Barrel 1:8 Carbine Length Medium Contour 16.1" w/Gas Block. View Details. $313.50 . In Stock . Guntec USA 300 AAC Blackout Pistol Length AR-15 Barrel - 10.5"Re: Muzzle velocity and barrel length. by bangbangping » Fri Oct 21, 2016 7:55 pm. Bgd wrote: I want to use the 135 grain sierra varmiter in the 300 blackout. I don't know what kind of velocity you're looking for, but you don't need a whole heck of a lot with that bullet. Here's a pic of what I could find of one that went into 10% gel at ~2000 ...This product is a 10.5-inch barrel with the pistol gas system. The barrel features a heavy profile and is apt for continuous shooting. The 1:8 twist rate is ideal for 300 Blackout loads between 115 to 165 grains. The barrels feature a SOCOM contour and have been manufactured from 4150 V steel.

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So in a 223/556 you are completely right, that round gets full powder burn around 18 inch of barrel length. So shorter than 18 means more flash/noise. A 300 blk however gets full powder burn in about 9 inches. So the flash and concussion will be less than a 223 in a comparable length. A 5inch blackout gets really loud.May 22, 2019 ... Quick video testing supersonic and subsonic 300BLK ammo through different barrel lengths. Nine Line Apparel Shirts [including Warheads on ...IDK some ppl say 300 b/o isn't that depends on barrel length but the hornady book shows a 110 getting 2400fps in a 16 inch barrel with h110. Dunno for sure since I don't have a chrono but hornady/Barnes said I should be getting around 2100fps with my 10.5 using 17.5gr aa#9. With that said it seems 300b/o is barrel dependent. When loaded to supersonic velocities, the 8.6 Blackout is loaded with lighter-weight 338 caliber bullets. These bullet weights range from 160 to 225-grains and reach up to 2,400 fps out of a 16-inch barrel. The bullet weight and velocity variations vary widely, so I used the loadings listed below for this calculation.

In physics, the three types of acceleration are changes in speed, direction and both simultaneously. The word “velocity” is often used in place of speed. A person can calculate the...Setting the azimuth on your satellite dish simply means pointing the dish in the proper direction using a magnetic compass. Communications satellites maintain a geosynchronous orbi... For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. Attaching a 6″ suppressor to this barrel length results in a total length of 14″ to 16″, which provides optimal muzzle velocity for accurate long-range shots. For the longer range engagements with a suppressed 300 Blackout, use a 16 ... Depends. For sub, yeah it’s close. That length is great for keeping subsonic projectiles subsonic for most barrels in that range and most subsonic rounds. Longer barrels with higher twist rates will speed up your bullet and approach that sound barrier limit. Also certain round weight will impact velocity (190 grain to 220 grain).The 300 Blackout’s .30 caliber bullet can be made especially long, and as the result may weigh up to 220 grains — quadruple the weight of the typical 223 Rem round’s. So heavy …Velocities out of the 7.5” and 10.5” barrels for AAC .300 Blackout 110 gr V-MAX offering. The speeds were taken using the ProChrono DLX. Averages are at the ...The 'optimum' barrel length for .300 BLK is 16". My SBR is 10.5" with a 1:7 twist and it works just fine. Posted: 4/22/2022 9:13:38 PM EDT. [#18] 16" is probably the ideal length from a ballistics perspective but not ideal from a "get the best out of the gun" perspective. That ideal is closer to 10" plus or minus.We compare the velocities of a 150 grain 300 AAC Blk Out fired from a 16" barrel AR15 and a 8.5" barrel AR15.300 AAC Blackout uggested Bullet se Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. *Recommended Powder C Compressed Load 2 110-grain TAC-TX FB Sectional Density .166 Ballistic Coefficient .289 C.O.A.L 2.250” Powder Minimum Maximum Charge (grains) Velocity (fps) Charge (grains) Velocity (fps) H110 …The 8.6 Blackout also has a low muzzle velocity compared to the 223 Remington. The same 77 gr 223 Rem bullet has a muzzle velocity of 1,293 ft-lbs, double most 8.6 Blackout rounds. However, the 210 gr TSX 8.6 BLK bullet has a higher muzzle energy of 1,810 ft-lbs; the 223 Rem cannot produce this much muzzle energy.Envisioned as the “big brother” to the 300 Blackout, the 8.6 BLK is to the AR-10 platform what the 300BLK has been for the AR-15. ... What is the best barrel length for 8.6 Blackout? ... The high velocity of 8.6 Blackout supersonic ammo makes it ideal for long-range shooting due to its flat trajectory and sustained energy at longer ...

Though .300 BLK has gotten a bit more affordable at the range, it’s still not as cheap at 5.56 and 7.62. That’s why we suggest buying in bulk to keep the cost per round down. For that, we go with US Cartridge. You can get 200 rounds of 147-grain for a reasonable $135 – not bad if you’re doing training at the range.

Quoted: The .300 Blackout was developed by AAC and they report the optimal barrel length for both subsonic and supersonic is 9". However, untold numbers of people have had excellent results using 7.5 to 10.5" pistol barrels. Maximum Most efficient velocity vs length is supposedly reached @ 9".Developed to be fired with or without a suppressor, a 300 Blackout will experience a full powder burn in just 9 inches of barrel length, making it an ideal candidate for a SBR (short barrel rifle). Although supersonic 300 Blackout ammo has proven to be extremely effective for hunting medium sized game like whitetail deer and hogs, subsonic ammo ...This barrel length optimizes velocity and accuracy, making it effective for medium-range shooting. It also offers better ballistic performance compared to shorter barrels, while still maintaining the versatility and compactness that the 300 Blackout round is known for. ... The ideal barrel length for a 300 Blackout depends on its intended use ...When we compare the two shells, the overall length is basically the same at 57mm. The 5.56mm typically weighs 55 gr, 62 gr, and 63 gr, which is noticeably lighter.300 BLK typically weighs 78 gr, 110 gr, and 125 gr. As a result, the 300 BLK’s perceived recoil sound has been identified as more robust than the standard 5.56mm bullet.Some of you have probably seen this, but it's still a great reference for others. They key take away point is that 300BLK has a much lower velocity loss as you shorten the barrel versus 5.56 NATO. The colors highlight where the rounds are at fairly equivalent ft-lbs. energy. The take away there is a 10" 300BLK will have roughly the same energy ...Feb 15, 2024 ... 8:57 · Go to channel · 300 Blackout Barrel Lengths and Affects on Velocity. Silencer School EP.5. Alabama Arsenal•210K views · 11:33 · ...Yes. The Honey Badger by Q has a 7” barrel, the SIG .300 MCX Canebrake and Rattler has a 5.5” barrel. Both seem to be effective barrel lengths in that caliber, in my unprofessional opinion. 7.5” is fine, there’s 300blk barrels around 5”. Full powder burn only takes 9”. That’s not true.Case Trim: 1.358” Barrel Length: 16” Twist Rate: 1:8” Barrel: Krieger 300 AAC Blackout 300 AAC Blacout Maximum Loads Should Be Used With Caution - Always Start With Minimum Loads. ... Velocity (fps) Charge (grains) Velocity (fps) H110 16.5 1980 17.5 2150 120-grain TAC-TX BTWith a 9" barrel and 7" shroud length the overall length would meet the 16" requirement w/ or without the suppressor. With a 9" suppressor, 2" would extend beyond the shroud and the overall barrel length would be 18". I would shoot subs and supers, and would develop loads for both.

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I’ve always stated my home-defense gun is a Mossberg 12 gauge loaded with 00 Buckshot, but the PDX offers more maneuverability than my Mossberg 500 and the power of 5.56mm, 7.62mm x 39mm, or a .300 BLK bullet. A gun like the Maxim Defense PDX is only 18.75" and can be chambered in the same caliber as any other AR at twice …Ballistic Advantage 10.5 300 BLK Pistol Length Modern Series Barrel - BABL300008M. Save 28 % MSRP: $ 165.00 $ 118.95. Only 6 left in stock. Ballistic Advantage 10.5 300 BLK Pistol Length Modern Series Barrel quantity. Add to cart. Add to Wishlist. SKU: 1637 Categories: AR-15 Barrels, Barrels, Upper Parts. Price Range. Categories. Brands.NOTE: At 10:47 - the LWRCI DI rifle is NOT suppressed.Looking for a product featured in this video? YouTube prevents us from posting links. Head over to our ...56. Jan 10, 2020. #1. I have an AR15 chambered in the Wilson Combat 300 Ham'r with a 16.25" barrel. Load data on the Wilson website shows 2450-2500 fps with either AA1680 or CFE BLK and the Speer 130gr Hot Cor bullet. Problem is I'm only getting 2260 (Labradar) with a max charge of CFE BLK. I know some of the loss is due to …The 300 BLK shoots .308 caliber bullets. 3. Suppressor-Friendly: You can shoot heavier bullets subsonic. The subsonic capabilities of the 300 BLK make it ideal for use with a suppressed AR. 4. Great Barrel Life: With a .30-caliber bore and a modest powder charge, barrel life is outstanding. 5.Advertisement The barrel of a flintlock is its own technological marvel, especially for the time. A blacksmith would take a flat piece of iron and beat it into a cylindrical shape ...With a .300 Blackout barrel, you can configure your AR-15 to fire the unique .300 Blackout round, which offers powerful, accurate performance and an even greater array of options to meet your needs as a shooter. ... Though these bullets are delivered at a lower velocity, the .300 Blackout's lower chamber pressure and fast-burning powder allow ...Overall I tend to prefer my 10” 300blk vs my 7.5” for the added rail space, increased velocity with supers and it’s much less picky with subs (increased dwell time). Reply reply. armada127. •. 8" personally one of the neat advantages of 300BLK imo is the ability to go shorter than 10". Reply reply.When it comes to .300 Blackout pistols, Daniel has a great chrome-lined 10.3-inch model with a 1:8 twist and heavy Mil-spec heavy phosphate coating that is hard to beat. Weight is a handy 20-ounces. 5. …Re: Ideal barrel length for 300 BLK subsonics Originally Posted by DJSticky My understanding is that, because the 300 BLK was designed around a 10.5 inch barrel, the velocity gained per inch over 10.5 is very minimal. ….

Hornady’s .300 BLK 125-grain HP offering brings a quality option for those looking for a defensive-style round. ... Measured velocity using a Garmin Xero C1 Pro for a 5 shot average was 2186 fps for the 8.5” barrel. ... When you order they even ask for barrel length and twist to make sure they get you the proper round. June 24, 2020 3:34 pm ...That's because, as long as the gas is expanding and contained in the barrel, the bullet will accelerate. Based on that, the 300blk behaves more like a magnum pistol round than a rifle one - small case volume with fast burning powder. The fast powder means it burns up quick enough for a shorter barrel.May 22, 2019 ... Quick video testing supersonic and subsonic 300BLK ammo through different barrel lengths. Nine Line Apparel Shirts [including Warheads on ...Max Case Length: 1.368" Trim-to Length: 1.358" Max Cart. OAL: 2.260" RCBS Shell Holder: # 10 Test Firearm: Universal Receiver Barrel Length: 16" 150 gr Grand Slam® SP/CANN 150 gr SPFN Hot-Cor® 150 gr Spitzer BTSP 150 gr Spitzer SP Hot-Cor® 30 Speer Part No. Weight, grains COAL Tested Ballistic Coefficient Sectional Density 2026 150 2.190 ...I’ve always stated my home-defense gun is a Mossberg 12 gauge loaded with 00 Buckshot, but the PDX offers more maneuverability than my Mossberg 500 and the power of 5.56mm, 7.62mm x 39mm, or a .300 BLK bullet. A gun like the Maxim Defense PDX is only 18.75" and can be chambered in the same caliber as any other AR at twice …1,377 ft⋅lbf (1,867 J) Test barrel length: 16 in. The .300 AAC Blackout (designated as the 300 BLK by the SAAMI [1] and 300 AAC Blackout by the C.I.P. [2] ), also known as …Yes. Most 300 Blackout loads reach their full velocity within 10″ of barrel length and many in 8″ or so. There’s a huge market of projectiles designed specifically for the caliber in both supersonic (which is the typical choice for hunting use) and subsonic flavors. There’s at least a dozen options for 300 BLK projectiles that reliably ...Feb 17, 2023 ... 30 cal V-MAX bullet, that energy persists out to 300 yards. All of that and its a smaller lighter weapon with roughly half the barrel length of ...N. KY. Oct 26, 2021. #4. Your bullet selection will most likely show more variation than your barrel length at 1 mile. I've seen some vast differences in elevation to dial with different bullets. A few like to be great to 1500 yards and then throw a parachute out their ass and slow down and knuckle ball.Twist: 1:5 twist for the 7″ barrel, 1:6 twist for the 16″ barrel. Assembly Weight : .97 lbs (7″), 1.8 lbs (16″) Muzzle Thread: 5/8-24. First, I want to reiterate that the .300 AAC Blackout ... 300 blk velocity barrel length, Sep 28, 2023 · The 8.6 Blackout, also known as 8.6 BLK or 8.6mm Creedmoor, is the brainchild of the innovative team at Q LLC. Envisioned as the “big brother” to the 300 Blackout, the 8.6 BLK is to the AR-10 platform what the 300BLK has been for the AR-15. With its roots in the 6.5 Creedmoor parent case, the 8.6 BLK cartridge is trimmed and necked up to ... , Jan 6, 2024 · What is also interesting is that the 8.6 blackout, even though it is a lower velocity bullet within the first 175 yards it still has more energy than the 30-30. So, speed isn’t everything in this case. Comparing apples to apples, the 8.6 Blackout has more velocity in both supersonic and subsonic rounds than the 300 Blackout. , Max Case Length: 1.368" Trim-to Length: 1.358" Max Cart. OAL: 2.260" RCBS Shell Holder: # 10 Test Firearm: Universal Receiver Barrel Length: 16" 150 gr Grand Slam® SP/CANN 150 gr SPFN Hot-Cor® 150 gr Spitzer BTSP 150 gr Spitzer SP Hot-Cor® 30 Speer Part No. Weight, grains COAL Tested Ballistic Coefficient Sectional Density 2026 150 2.190 ..., With an overall case length of 35mm, the 300 BLK has a case capacity of approximately 19.2 grains. The reduced case length was required to allow it to fit into a standard M4 carbine magazine while being loaded with a longer 30 caliber bullet. ... 300 Blackout Bullet WEIGHT Muzzle VELOCITY (fps) Muzzle ENERGY (ft. lbs.) TRAJECTORY (in.) Muzzle ..., The CV (constant velocity) axle shafts on a Toyota Corolla integrate the transaxle of the front wheel drive transmission with the wheel. There are two joint bearings on each end of..., The ideal barrel length for a 300 Blackout hunting rifle is typically between 8 to 16 inches. See 3,000+ New Gun Deals HERE., 300 HAMR vs 300 Blackout: Trajectory. Check out this comparison of trajectories for these rounds out to a distance of 1,000 yards. The most common bullets have been used for evaluation for a general overview. 300 HAMR. 16.25” barrel/BC 0.215/110 grains. Lehigh Defense CC. 16.25” barrel/BC 0.274 /135 grains., So let’s dive into the 300 Blackout vs 308 vs 7.62×39 debate as it relates to shorter barrels. The 300 Blackout vs 308 vs 7.62×39 in Short Barrels. First, they inquired about well-known and widely manufactured calibers. ... Not bad, but 7.62x39mm doesn’t have a high enough velocity, even with a full-length barrel. 300 Blackout., The Faxon Firearms AR-15 Barrels .300 Blackout Gunner Profile comes in three distinct barrel lengths, two pistol barrels at 7.5″ and 10.5″ and a legal carbine 16″ barrel. The QPQ nitride finish with an additional NP3 coating makes this barrel nearly impervious to surface wear, rust, and corrosion., Many people get speed and velocity confused. It's no surprise because the terms are often used interchangeably. But they're not quite the same thing. So how do you find the velocit..., Notes: Only ammo tested to have all five rounds stay in the gel. Hornady Black Subsonic. Bullet Weight: 208 Grains. Bullet Type: A-Max Polymer Tip. Avg. Muzzle Velocity: 965 fps. Avg. Muzzle Energy: 468 ft/lbs. Bullet Drop at 50 yds: 0.7 inches. Bullet Drop at 100 yds: 8.78 inches. Energy at 100 yards: 442 ft/lbs., For 300 AAC Blackout, that point is 9 inches of barrel. That number comes from multiple conversations with the people who designed the 300 AAC Blackout cartridge, did the …, swatbwana said: 300 blackout is designed as an SBR suppressed cartridge you have no need for a barrel longer than 16. Maybe for you, but not everyone. My end use is a competition rifle pushing a 175 gn Sierra Matchking at 1900 fps or a 155 at 2100 fps with no suppressor. My gunsmith is just finishing up my 20 inch 300 Whisper barrel., 56. Jan 10, 2020. #1. I have an AR15 chambered in the Wilson Combat 300 Ham'r with a 16.25" barrel. Load data on the Wilson website shows 2450-2500 fps with either AA1680 or CFE BLK and the Speer 130gr Hot Cor bullet. Problem is I'm only getting 2260 (Labradar) with a max charge of CFE BLK. I know some of the loss is due to …, Calibers like 5.56 benefit from longer barrels and gain maximum velocity from a longer barrel. 5.56 vs .300 BLK in PMAGs. ... Cartridges like the original .223 Remington and 5.56 meet their peak velocity from a rifle-length barrel. Cartridges like the .224 Valkyrie benefit from the 20-inch barrels. The famed 6.5 Grendel works best with 18 …, Jun 9, 2017 ... Comments35 ; 308 Velocity: SHORT -vs- LONG (16" -vs- 24"). Ultimate Reloader · 200K views ; Firearms Facts: 7.62x39mm vs 300 Blackout., Get free real-time information on USD/BLK quotes including USD/BLK live chart. Indices Commodities Currencies Stocks, We would like to show you a description here but the site won’t allow us. , 300 blk 243 win 6mm creedmoor 6.5 creedmoor 308 win 260 rem 270 win 30-06 sprg 300 win mag caliber 243 win 6 mm creedmoor 6.5 creedmoor 260 rem 270 win 7mm rem mag 308 win 30-06 sprg 300 win mag barrel) bullet weight (grains) 107 140 140 168 175 175 ... velocity in fps muzzle 1100 yds 1 200 1 300 yds 1400 500 yds 2750 | 2499 2262 1 2038 …, Apr 27, 2020 · You will usually be getting 2,300 to 2,400 fps in a 16.3-inch barrel; that isn’t great for lethality. On the plus side, you can drop the barrel length down to around 11 inches and you will only be losing about 150 to 200 fps. Not bad, but 7.62x39mm doesn’t have a high enough velocity, even with a full-length barrel. 300 Blackout , For optimal performance with a suppressed 300 Blackout, we recommend a barrel length of 8″-10″. Attaching a 6″ suppressor to this barrel length results in a total length of 14″ to 16″, which provides optimal muzzle velocity for accurate long-range shots. For the longer range engagements with a suppressed 300 Blackout, use a 16 ..., I'm currently looking for a 300 blk barrel, but I am conflicted on the twist rate and length. I'm taking into account bullet grain weight and cost as well. I've seen on online cost of 300 blk and it's a small difference $19 dollars for lower grain cartridges and $25 for higher grain cartridges (box of 25), but in all a difference for my wallet., Nov 13, 2014 · Adding more barrel length after that point might still increase the velocity a bit, but the added weight isn’t always worth the extra dollop of velocity. For 5.56 NATO, that point is 20″ of barrel. For 300 AAC Blackout, that point is 9 inches of barrel. , Re: Muzzle velocity and barrel length. by bangbangping » Fri Oct 21, 2016 7:55 pm. Bgd wrote: I want to use the 135 grain sierra varmiter in the 300 blackout. I don't know what kind of velocity you're looking for, but you don't need a whole heck of a lot with that bullet. Here's a pic of what I could find of one that went into 10% gel at ~2000 ..., 13° 28' 0" N / 144° 46' 59" E. Mar 12, 2022. #21. treillw said: Want to pick up a 5.56 short barrel upper and a 300 blk short barrel upper for a Noveske Gen 3. They are just a little off on the lengths which I (and others) think are ideal though. I'd like a 9" 300 BLK, as that is what the cartridge was designed for., Velocity is a vector quantity measured in units of length per time. Using the United States customary unit of measurement, velocity is typically given in miles per hour, commonly a..., Jun 5, 2023 · For optimal performance with a suppressed 300 Blackout, we (Faxon Firearms) recommend a barrel length of 8″-10″. Attaching a 6″ suppressor to this barrel length results in a total length of 14″ to 16″, which provides optimal muzzle velocity for accurate long-range shots. , Barrel Length, Velocity, and Energy. A wide range of barrel lengths work well for building your 300 BLK-chambered rifle or pistol. The twist rate matters most for achieving proper stability and accuracy, but we'll get to that in a moment. Let's take a look at barrel length and performance, first. 300 BLK Barrel Length vs. Velocity, N. KY. Oct 26, 2021. #4. Your bullet selection will most likely show more variation than your barrel length at 1 mile. I've seen some vast differences in elevation to dial with different bullets. A few like to be great to 1500 yards and then throw a parachute out their ass and slow down and knuckle ball., Also, there are no "heavy, high bc bullets" for 300 blackout unless you're shooting subsonics, which defeats the purpose of having a longer barrel for more velocity. And yes, i can shoot my 300 blk pistol as accurately as a rifle because a pistol brace is effectively a stock. It sounds like you don't know what you want to me., An important fact to remember, you need velocity (perhaps greater than 2,000 f.p.s.) to penetrate common ballistic vests. A rifle with a nine inch barrel shooting .300 BLK will fall below that velocity quickly — within 100 yards — versus 5.56x45mm NATO which will stay above 2,000 f.p.s. at least to 400 yards., 1M views 4 years ago. What barrel length is best for 300BLK AR-15s? 300BLK vs. 5.56? 300BLK vs. 7.62x39? Best twist rate for 300 Blackout? Let's find out! ...more., gunmade ... Loading...