Bigtimer

Stay away from the Bore Butter for right now. There is a way to use bore butter and have it work for you, but just putting raw BB down the barrel is not the way. Treat that barrel the same as you would your Optima barrel.

I use to use BB a lot but have found an alternative product Slip 2000 that works even better, so I am not using it any longer. If you choose to shoot real BP from that barrel, I really would suggest Slip 2000 or then back to using BB but - you would need to use it what I call correctly. If your interested let me know and I'll send you some thoughts.

You can shoot sabots from that barrel also but i would suggest you moveto go to 300 grain bullets and the HPH-24's should work just fine. If you choose to shoot Conicals I have not found a conical much better the a 460 grain BullShop or even the 460 NE. I am assuming you will need a conical sized @ .503. I would really stay away from a lot of the other varieties out there to begin with.

Start @ 70 grains of T7, but you might also want to make a change here also, instead of using 2f geta bottle of 3f it will work a lot better in your sidehammer gun. I shoot 80 grains in my TC Renegades and 90 grains in my Green Mountain barrel.

Wish I would stumble on a deal like that....