If you want to shoot long range, the 200 shockwave/SST is a good choice, and should shoot well out of your Disc. IMO it would be the best long range bullet choice for you. Much cheaper and will shoot as flat or flatter than anything from PR bullets.
For close range (100 yards or less) there are a lot of options out there including conicals or other "non-pointy" bullets. My favorites for the .45 are (in no particular order):
200 XTP
200 SST/Shockwave
185 Lehigh
195 Dead Center
I've not shot conicals except for Pwerbelts.