Going thru my stuff I've found a few boxes of 30 cal plain base 165 grain heads. Bands measure .309 to .310, the nose is under size at .297. Most are bevel base but I've some flatbase also. I've a 2 groove A3 I want to use them in. The nose falls into the barrel as expected but the band diameter is about 1.5 cals long.
Being of a moderately hard alloy as commercial cast tend to be what can be used for loads that may work for 40-50 rounds of firing? I've overcoated them with 50/50 LLA and mineral spirits hoping that may help to a degree.
Not fixed on a velocity window, just whatever may hold up ok for the 40 round match.
What are your past experiences on something like this?
I will be posting results good or bad when we get some downrange.