If you have two .300 Blackout rifles with the same suppressor, one with a 9" inch barrel with a 1/5 twist and one with a 16.12" inch barrel with a 1/7RH twist and you shoot a 194gr. subsonic bullet out of them, how different would the point of impact be between the two? Considerable or not much?
How big would the Point of Impact changes be?
- Thread starter Aim1
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ontarget
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If you have the said firearms you could try it and let us know. My bet would be that the longer barrel will produce higher velocity thereby causing a higher POI. Or less drop. As distances to the target increase the difference should be more dramatic.
That is assuming they are both zeroed to the same POI at the same distance to begin with.
That is assuming they are both zeroed to the same POI at the same distance to begin with.
FL-NC
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This makes no sense. If you are asking how 2 different guns would group, it depends on everything. Its 2 different guns.
SilentStalker
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I’m confused. Are you asking how one would group over the other or do you literally want to know if the shorter barrel would have more drop, all other things being equal, at the same distance?
On the one hand, you have one with a shorter barrel and faster twist, on the other hand you have one that has a longer barrel and faster twist. If I remember right each 1-2”, can’t remember which averages about 15-20 FPS gain. So, you’d see roughly 60-120 FPS gain with the longer barrel and slower twist. But the shorter barrel has a faster twist to Make up for the above difference. So, in all honesty the difference would theoretically be negligible. But, there are a lot of other factors at play here. Are the barrels the exact same other than one being longer? Longer barrels might experience more whip than a shorter one which could make a difference but again with these barrel lengths it’s not likely to be an issue. I’d say they might be slightly different but it would be negligible. If you have them both, try it out. I’m curious.
On the one hand, you have one with a shorter barrel and faster twist, on the other hand you have one that has a longer barrel and faster twist. If I remember right each 1-2”, can’t remember which averages about 15-20 FPS gain. So, you’d see roughly 60-120 FPS gain with the longer barrel and slower twist. But the shorter barrel has a faster twist to Make up for the above difference. So, in all honesty the difference would theoretically be negligible. But, there are a lot of other factors at play here. Are the barrels the exact same other than one being longer? Longer barrels might experience more whip than a shorter one which could make a difference but again with these barrel lengths it’s not likely to be an issue. I’d say they might be slightly different but it would be negligible. If you have them both, try it out. I’m curious.
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SilentStalker
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