The one that I was using are for a 45 they are 40 cal,I use them in my 50 by switching sabots that take a 40 cal bullet in my 50,the sabots are the same as pr uses for his bullets.
I have tried his bullets in a lot of different grains but I just never got the groups that I got using the barnes 195 in my 50.thats why I wanted to try the sst,they are les expensive than the barnes.I got the sst' s for under 8 bucks for 20 and the last time I got the barnes was around 20 bucks for 25,saw some in a store the other day and they were marked $28.99 a box.
T/C is susposed to be coming out with the 200 gr for the 50 but haven' t seen one yet if they shoot good probably use them then I won' t have to order the sabots to shoot the 40 cal in my 50 cal.
I have had my 45 cal barrel for 2 years now (this is the second one,I sent the 1:20 back and they sent me a 1:28) and would you believe that in the pic was the first group that I have gotten after trying many other bullets and powder.I tried bullets from 150 to 240 grs in it without any success.But the 50 shoots so good.