Would it be a good idea to try these bullets? I shoot the 52gr Speer HP(FB)s now, they look almost identical, but the Berger has a better BC. The Speer BC is .179 (had to contact Speer for clarification on this one, as they have 2 different BCs posted in different places).
If it were me and i was trying to get out to longer ranges i'd try some 60 JLK Low Drags. That bullet has a BC of .339. It'll shoot .5 at 100 out of my buddy's factroy Savage Striker handgun and we shot a clover-leafed 3-shot 2.5" gp. @ 425 not long ago.