Pglasgow
I've been using the same ballistics calculator - do you have any data that proves/disproves the BC calculations it provides? For instance, punching in the Buffalo Bullets 375gr SSB info one gets a BC of .514! While the 460 NE has a BC of .259 which I believe UC said .25 was a good estimated BC to use for these large round nose conicals ...

I'm still working on being able to shoot consistent groups so haven't gotten to your level yet (per this thread), but it's clear from all of the various projectiles we could shoot - and what's available in an all lead one at that - they have a pretty big BC spread amongst them. Sheer drop out to 150yds regardless of sight in distance is limiting in my opinion. I'm not sure I'll be able to shoot out to 150yds with dead center holds on deer sized game - time will tell though.

cheers,
phil