I have been using surplus, H, and IMR 4895 interchangeably for years. Only if the loads are at the top end of the scale do I make any distinction. Likewise with brass. Lake City brass, which is on the heavy side, will produce higher velocities with the same loads but, since we are discussing lighter loads, there is no safety concern. I have always leaned toward the heavier brass for lighter loads on the assumption that the smaller capacity complements the lighter power charge. I freely admit, this advantage may exist nowhere outside of my imagination! I often relegate Federal brass to light load duty just because it is soft and won't last with high pressure loads.
I use the same loads in both the 303 British and the 30/40 Krag, both of which are similar to the 308 in capacity, as well. Performance is just the same as in the 308. GD
