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Faxon Q&A #2: Barrel profiles, length, fluting and more!



Session 2 with Nathanial from Faxon! This time we delve into barrel profiles, barrel lengths, fluting and finalize some thoughts on nitride.

If you're interested in learning what really is going on with rifle barrels, then this is the video for you!

0:48 General discussion.

4:00 Original M16 barrel vs HBAR. Changing bullet impact with sling pressure.

5:37 Building/buying first AR. What barrel profile do you want?

8:43 The military’s needs in a barrel profile and a civilian’s aren’t necessarily the same.

11:24 Why are people putting M4 profile barrels on semi-auto guns?

13:09 Ideally barrels are tapered, fat at the receiver and thin at the muzzle. Barrel “whip”. Where’s the hottest part of a barrel?

15:06 Discussion about fluting of barrels

17:04 Fluted barrels and full auto guns?

17:50 IV8888’s melt down video with Faxon barrel.

18:45 Government profile barrels are the worst of both worlds?

20:20 InRange’s visit with Jim Sullivan and his efforts towards enhancing the sustained fire capabilities of the M16 weapon system. Superheated gas tubes and failures.

21:30 Discussion about barrel lengths. Barrel length does not determine accuracy. So why pick specific barrel lengths? Shorter barrels actually have more accuracy potential. You want the shortest barrel possible for your specific application.

22:45 Small bore/high velocity cartridges are sensitive to barrel length. Barrel length for optimal powder burn and prevention of being overbore. Barrel length, and thus velocity, determines ballistic capabilities at range.

25:15 Why do larger diameter cartridges give up less velocity with shorter barrels than small diameter alternatives? Surface area of the projectile factors into the pressure generated during the firing process. Pressure increases with smaller diameter but higher velocity cartridges.

26:55 You want to ensure that your bullet stays supersonic until it reaches the target. What happens when your bullet’s velocity falls below supersonic in flight?

28:26 Follow up on questions about nitride and potential nitride concerns. Krieger Barrel’s email about nitride. The nitride processing is done by a 3rd party, not the barrel manufacturer. Warranty concerns. Nitriding a poorly manufactured barrel means you actually could make it worse. The nitride process, temperature and what can go wrong if done improperly. When done properly, multiple manufacturers agreed that it is a good solution. QC on barrels post nitride process.

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