Re: Retumbo for a 6.5x284 load
I haven't used it myself because I have been have had good success with H4831 sc. I have spoken to a few people that do use Retumbo with 140 VLD's and they have gotten excellent results with higher velocities than 4831 sc (around 100 fps). The charge weights are in the 56-58.5 range and magnum primers are used to give tighter velocity spreads. The other claim is that this powder gives excellent temperature stability. I had planned on trying it if I wasn't able to get at least 2950fps with 4831 sc.