Dusty,
I have the same experience with my FA 83, although I shoot mosly 45 colt through mine. It loves the 300 grain bullets. And doesn't seem particular about the brand out to 50 yards. NBC, D&J, and hornady xtp. It also like sthe 300 gr RCBS swc and the Lyman #452651 325 grainer using straight wheel weights water dropped and sized to .452.
It doesn't do as well with the lighter cast bullets in the 255 grain range, but did very nicely with the 250 Hornady xtp and a good dose of H110. I have not been able to find an accurate load for cast bullets. I have tried NBC, lazer-cast, and the Lyman 452424 Keith bullet, but have yet to find an accurate combination. I have used Unique, 231, AA No. 5, Lil'gun, and H110.
I have the Lyman 255 grain gas check mould #452490 on order and we will see how it does with that.
I have been thinking of trying an LBT mould, but I emailed Veral once and posted on the forum dedicated to LBT a few days ago, but have not received an answer. Veral doesn't seem to have posted any answers for a number of days. Veral offers so many options, and I am unsure of what to order. So I guess I will have to wait until I hear from him.
Tom