Re: 6mm 105 Amax 4831sc 243 load
I've had much better luck with H4350 shooting 105 Amax bullets in both the 243 Win and 6mm Creedmoor(exact same case capacity as the 243 Win). I think my 243 load was around 40 grains (Lapua brass)and the Creedmoor was 43 grains(Hornady brass). Don't know velocity of the 243 but was running the Creedmoor at 3170 28" barrel. BR2 primers in both.