So if you read my .45 muzzleloader thread you know I decided to try going with a Knight .45 cal Mountaineer barrel swap since I have a .50 Knight UL. I got the barrel in and it bolted right to my UL stock perfectly. I also ordered a Lehigh breach plug. The breach plug threads in the .45 cal barrel are kinda rough and appear to be threaded a bit shallow compared to my .50. I have to really force the bolt down with the Lehigh plug. It is .05" longer than the stock plug. With the stock plug in I still have to push the bolt down with some force. I am going to just use the stock plug. I hope to get out to shoot it soon but it may be 2 weeks as I have to work next weekend. I am going to try the Powerbelt ELR first just because its the easy button. If they dont shoot I will buy a smooth sizer and start trying some other bullets. One of my co-workers just got some Pittmans and he is shooting them under MOA out to 400 yards in his custom .45. I am also waiting to get some BH209 from a generous Rokslider.