Re: 243 winchester accuracy load?
My previous 243 was a 10 twist. I never bought lighter than 70 gr hp's Varget, h414, IMR 4350 R-19 maybe even R-17 I bought bulk bullets like 1000 TNT 70 & 75 gr hp 1000 80 Spbt's Nosler sells a nice 87 gr hpbt
look up hodgdon load data and most barrel manufactures give a bullt weight and twist rate for every caliber.
.270 Ackley improved 29 inch 1.250 dia. target barrel 7mm STW 28 inch 1.250 target barrel. I also love my .458 mag for varmints and the biggest game in the world.