I'm building a 22PPC bench/varmint rifle. Most info I've found suggests 12 & 14 twist barrels for up to 52grn bullets, my question is has anyone used a fast 6 twist for heavy 62-80 grain bullets. Most shots will be under 250 yards.
Thanks Evan, very informative.I don’t know if you saw my thread with a 7.5 twist 22 PPC shooting 90gn Sierras, but it might give you some ideas:
22 PPC and 222 for 1000yd BR
I have two barrels coming, one for each of my Bordens, that I am going to be experimenting with this year. One is a 22 PPC and the other is a 222. Both are being throated out to 0.100" to get this kind of a seating depth for the 90 SMK: Left to Right: 22BR, 22PPC, 90SMK, 222 all at a "touch"...forum.accurateshooter.com
The risk with using a 22 with a 6 or 7 twist barrel is blowing up bullets by spinning them too fast. By the time you drop down to an 8 twist, the risk is almost entirely mitigated.