That’s true. Was trying to speak ballistically. Y’all are sorta like trying to argue with a wifey type person. Always trying to plug new info into the equation. That ain’t very nice.
That’s true. Was trying to speak ballistically. Y’all are sorta like trying to argue with a wifey type person. Always trying to plug new info into the equation. That ain’t very nice.
The problem is you didn’t add anything the OPs question about a pistol length AR. If you want to have a discussion on the merits of one caliber over another, start your own thread.
I specifically brought up 300BLK as an option since the OP was looking for info on a heavy 5.56 bullet in a short barrel, which isn’t really worth the effort.
OP wants to stick with 5.56, and seems to understand the challenge with those heavier projectiles in that short of a barrel.
Where 300BLK shines in that short barrel is the cartridge design. It’s charged with a faster burning powder that is mostly, if not completely combusted by the time it leaves the barrel, which 5.56 doesn’t do in that distance.
And a headacheWith a short barrel 5.56 you get a gun and a flash bang all in one package.
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And a headache
Need MOAR brake
Oh Boy - Lots of benefits for heavier bullets if you are trying to shoot longer ranges. Better ballistic coefficients, less wind drift etc. What you really have to do is match your barrel twist rate to the types of shooting you want to do. Those light varmint bullets like slower twists 1:12, 1:14 etc. The heavier bullets need faster twists 1:9, 1:7 etc. to properly stabilize. On top of the twist rate, I've read that barrel length can make a difference too on stabilizing a heavier bullet.
For example, I shoot 69g SMK's out of my 26" barrel 1:9 twist, but I'm thinking if I went much heavier the bullet may not stabilize.
Damn good point. I did not consider that.I just want to clarify that bullet length determines the proper twist rate, not weight.
Yes, heavier bullets are generally longer so it can be construed as the same but weight isn't the determining factor.
ELD bullets are an example of throwing a wrench in the twist/ weight theory. They are longer than traditional bullets with the same weight. They may not stabilize in a barrel that will shoot the same weight in a traditional bullet well.
Sorta reminds me of an old chum who had some guy load him up some fast moving 110 grain ammo for his .30-06. The bullets never arrived on target. The general theory was they were exploding in mid air.Excellent explanation. Heavier Bullets require Tighter Barrel Twists for stabilization. However, Tight Barrel Twists often de-core and fragment lighter steel jacketed bullets. Perhaps this is because of higher centrifugal forces exceed the bond strength of the steel jackets on bullet cores, increased frictional heat incurred by faster moving twisting low mass bullet acceleration, or maybe because of bullet slippage across barrel grooves that might damage the lower mass bullet jacket integrity before leaving the barrel. I’ve seen precisely aimed shots at 50 feet appear to miss the target when firing 55gr through a 1:7 Twist Barrel......then found penetrations from small bullet fragments scattered on targets.....my opinion, anyway.
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It’s less like exploding and more like coming from together.The general theory was they were exploding in mid air.