OK, I have shot this a little bit so far. The bore measures .4515" so that is a plus. I have tried the factory 250 gr Remingtons. Horrible! Glad I got these for free.
I tried unique, HS6, Blue dot, Long shot, imr 7625, 231. So far the Blue dot an the 231 seem to work the best with the 250gr rcbs. I have only shot these at 50 yards. The two that shot good shat right at 1 1/4 ". I have not played with differant charges of either yet. I am waiting on the 270 gr mold to come in before I go shooting again.
I did load 5 up with longshot and a 200 gr cast lead HP. I busted 3 out 5 clay birds at 100 yards. I am going to try some more of these. They made a pretty good crack when fired. They must be going pretty good.