I have shot PR bullets and basically your gun will shoot them or it won't. I was able to push them full speed for BP subs in the guns that would shoot them. I had good luck with the 357s and duplex sabots in one 50cal but couldn't get them to shoot well in others.
Pistol bullets are a non-starter if you care about BC at all, with the exception of the various FTX bullets. Take a look at them. The .458 325gr is too big for your 45 but it worked wonderfully for my 50cal ML.
I'm not sure why you don't want to shoot Shockwaves. The 200gr 40cal is a good bullet that would do well for you; really not much else will meet the BC. I ran it to 400 yards in my regular ML and 500 yards smokeless. I had to keep shots over 150yds smokeless to let it slow down a bit but otherwise it worked fine, I killed at least 50-60 deer with it. The 250gr seems not to hold together quite as well but I shot a dozen or so with it with no problems either.[/QUOTE