04-04-2016, 11:00 AM
LRRPF52 Wrote:Twist rate, mostly on .30 bores. The 270 WSM factory guns normally have a 1/10", as does the 270 Winchester, so they are spun fast.
Some of the .338 LM rifles even have a 12 twist, and will come apart at around 1500-1600yds with some of the longer projectiles. Put a 1/10 in them and they can extend. Ulfberht uses a 1/9.3" twist.
Put a 1/9" twist in a 16" .308 and you will have better reach than a 26" .308 with a 1/12". Within 800yds, the 26" 1/12" will spank the 16" all day long, but then come apart as you push out. Some guns are more forgiving than others, maybe due to slightly tighter bores, but fast twist is the way to go.
most factory guns are not intended for shooting elr with heavy bullets i have seen 300 wsm and ultra mags with 1/12 because people like to shoot the 150s at 3500 to kill deer faster at 100 yards most factory loadings don't get into the heavy bullets because people want speed, as for why you would get a 338 lm with a 1/12 i have nothing thats just dumb but i think the trg used to come in that twist might have been 1/11 idk but it was slow is for caliber
308 168smk dont tolerate the trans sonic transition well from my understanding but if you have a bullet that will 6.5 123 amax 308 190smk with appropriate twist and the gun groups well at close range and the ammo is consistent chances are you can take it out pretty far
Punctuation is for the weak....