Just got the stock today and the Mcgowan 45 caliber barrel about 2 weeks ago. I will be taking it to the range this weekend for some serious testing. I have a match that starts Friday at 100 yds, Saturday is 200 yds and Sunday is 300 yds so each night I will be shooting this rifle out to those distances. I will put a 6x24 B&L on for the testing.
As far as it was stock (50 cal) I took 4 deer last year out to 180 yds. Go to Doug's message board and learn all you can to shorten the learning curve because it is different than the shooting black powder. 200 sst or 195 Barnes at 2700fps+ certainly is a whole new experience.