Basically, yes.
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Well it looks like at least 1 military is going be using double based powder, barrel life be damned. Wouldnt be surprised if M855A1 is atleast a single based since they were chasing velocity since its inception probably some kind of special St. Marks blend.
https://www.thefirearmblog.com/blog/...5-1024x768.jpg
The powder used in M855A1 is a double base propellent.
https://www.ar15.com/media/mediaFile...22-2423083.jpg
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Great thread !
Im not following here, are you saying 1/8 gets more FPS because of less rotations or is it some kind of special rifling combined with a slower twist that does it. Is this like a Triarc track barrel that has some kind of special rifling that boosts FPS or something? I believe the track series barrels are also 1/7 so Im guessing the mfg'er doesnt 1/8 would benefit the barrel.
Im not following here, are you saying 1/8 gets more FPS because of less rotations or is it some kind of special rifling combined with a slower twist that does it. Is this like a Triarc track barrel that has some kind of special rifling that boosts FPS or something? I believe the track series barrels are also 1/7 so Im guessing the mfg'er doesnt 1/8 would benefit the barrel.
Really wish they’d sell them separately, the KD4 barrels that is