Is it possible to rechamber a 243 to 6mm AI and get a larger powder capacity or would it be better to go 6x284. Any thoughts ?? Thanks for the help. Weezer
Both are possible depending on which action you have. Magazine and bolt length would be the determining factors. The .284 would definitely give you the most velocity but also the most barrel burning!.....Rich
What about 243ai since you most likely already have 243 brass and if not you can buy Lapua brass and 100-200 pieces of brass will out last the barrel. Also, in my opinion, a 243ai is a better fit for a short action than is a 6-284. My 6-284 is on a Rem 700 short action and if I had a magic wand I would turn it into a long action.