Hi,
I'm a new member, but a long time lurker. I've been reading this forum for years and learned much from it. I'm shooting a 45-90 Pedersoli sharps. I'm still developing the best load for the gun. Yesterday when putting together 50 cartridges I made a mistake of compressing the powder about an eight of an inch too far (approx. 3 mm). Unfortunately I only noticed this when all 50 cases were charged with powder, compressed, and a wax and a card wad was installed on top. (I use a "Medium Brood Foundation" used by beekeepers for those wads as described in one of Paul Matthews books).
Now if I try to seat my Lyman 457132 bullets I end up with them sitting too far in the case. I normally would seat them for the crimp to just cover the first grease groove. If I seat them now they are obviously about an eight too far in. I expect that sitting them that deep will significantly affect the accuracy so I'm considering pulling out the wads with a sharp piece of wire bent at the end, pouring the powder out and starting again. However, I wonder what effect this compression, removal and re-compression will have on the powder. Would you use such powder in your target loads, or would you relegate it to plinking use only?