I have successfully fireformed some cases now. The last load used in the process was 15 grs. H110, two 7/16" card wads punched out of old shell box cardboard, 450 grs. no. 9 shot, and a 7/16" overshot card wad. This load finished fireforming the cases well. I doubt the lower 1" of the case will ever enlarge to full chamber diameter, but the rest of the case out to the mouth is nice and straight with no splits. (Yes, that 450 grs. of no. 9 shot is over one ounce, but that was without nitro and cushion wads).
Now, I move to the load development stage. Goal is to develop an efficient non-tox load of no. 6 Nice Shot for woodies ........ all the case can hold. I'm hoping for a bit over 3/4 oz. at a velocity somewhere between 1150 and 1200 fps.
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