45 2.1 ppb?

[JReed]

The more I read about ppb the more I want to try some out. My dilemma is that I am not sure what would work best in my gun. What I have is a Remington original in 45 2.1 (actually 2.2) with a 1 in 22 rot. I can shoot 1.4" ggb with decent hunting accuracy to 200 yards. This gun has a good bore and groove diameter is .458 with a .450 bore. Given the age of the rifle it is more then likely chambered for ppb. Can any of you recommend a good over the counter bullet for me to try in the 1.2 to 1.35 length? I am looking to patch to bore diameter with tracing paper. Thanks in advance.