Originally Posted by Sniper03
Not really. The barrel length does not have that much to do with shooting heavier bullets. Regarding the 20" and 24" It is the barrel twist that dictates what you need to stabilize the heavier bullets. The 1:8 is just fine for most all grain bullets. The 24" barrel is OK for shooting stationary positions. But front heavy for carrying around if you do much moving. The 20 Bull Barrel Varmint is about all you want to handle if moving and then it can be a chore as the day goes on. And shots up to 600 yards.
Foe example the 1:12 Twist will not handle much over 55 grain bullets without loosing stability and giving some key holes. The 1:8 will handle up to 80 grain if you single load them in the chamber. So 60s and 70s bullets are fine.
lol, Trust me I understand the twist/grain ratios... but those extra 4" of barrel will help with heavier bullets, I've seen it before and it was just shown to me again.
As his shoots .25moa with 69gr in 1-9 twist 24" barrel... and I shoot about .25moa with 60gr in 1-9 twist 20" barrel and I'm still thinking of going lighter for a better group.. anyways I'll refresh your memory AR Groups Link