300BlkTalk

This fellow told me the 1-8 barrels were keyholing 220s at 100 yards.. is this normal, or something wrong with his setup? My initial research said 1-8

Give this some consideration...

https://www.youtube.com/watch?v=-dg7oDveLgs

http://www.amazon.com/Primary-Arms-Scop ... R160%2C160_

Hi guys.. building a pair of AR15 PDWs for the Mrs and I and a discussion on the phone yesterday with a guy who seems to know a lot about this caliber (300BLK of course) said 1-10 to 1-12 twist is best for stabilizing the heavier, longer bullets. The barrels I have are 10.5" Radical Firearms 1-...