I had a 10" 10MM and it shot very well , accurate , and like the above post it does kick a little for the little round it is. I would use the 170 or 165 bullets because the 200 grainers didn't seem to shoot as well as I thougt they would . The point of impact changed quite a bit from bullet weight to bullet weight. I remember 11/2400/175 CSW shot quite well out of my barrel and did about 1200/1250 range not exactly sure which . You could load the barrel hotter with AA#9 and it shot well with 170-180 bullets. Handloader magazine did a work up of the 10 MM in an article and the factory 180's shot arround 1" at 100 yards. They commented how accurate their barrel was. I guess , even though some try to make it so , it is not a rimless 41 mag just an in between round that shoots pretty accurately and fun to play with.