I have not checked for bullet pull but I don’t believe the roll crimp is damaging the plating. I have pulled some of these loads and the crimp line is only a slight crease in the plating.
Thanks, I am very willing to change bullet style/material but less willing to switch to a slower burning powder. A bit slower velocity is OK if I can avoid dealing with the huge blast of H110 and so on. To me a “hot” load is a 158gr bullet at ~1250 FPS from a 4” barrel. But it must be accurate as well.
I can shoot a 2-3” group from the bench at 25 yards, using 38 special factory and handloads, on a good day. I can’t get below 4” with plated magnum loads. Part of that might be flinch but part is the bullet for sure.
I think I will try out a coated Missouri SWC with HS6 to see if I can do better. If not, then I will look into other powders.
Thanks all