I got the .243 barrel in for my Optima Elite. I've spent a ton of money on the Optima and all the muzzleloading stuff. I can't justify buying a decent scope for the .243 right now but I wanted to play with it and try it this season. I have my Model 70 with a Burris Short Mag, so I just bought the scope base for the .243and swapped the scope. I am hoping to try it out this weekend. I am hoping it shoots as well as the muzzle loader barrel. I just picked up a box of the 100gr Corelokts to get sighted in and try out. I will post a report later. I also need to re-check my zero on the muzzy barrel cuz it slipped when I was cleaing it last and fell to the floor. I was in the house and the floor was carpeted, so I kinda doubt I hurt anything but I figured I better be safe since I plan on hunting with it next week.