I see Berger bullets has a huntingbullet in .277cal @ 140grain with a BC of .487!.
However the almost identical same bullet in .284cal has a BC of .510 in the 140grain.
Both bullets weighing the same.
Normally I would have thought the BC went up if having the same weight as thee caliber went down. I know ofcouse bullet shape does play a part aswell. If this is the case that Berger has chosen to make out a slimmer/trimmer bullet for the .284cal, why would they not make the same bullet in the .277cal with a better BC?.

Thanks!.

I'm guessing here, but I'd expect that bullet shape is the driving factor here. Berger is well-known for target bullets, and the BC is much more important there than in hunting so the numbers are probably pretty accurate. Email them and ask them. I've heard Walt Berger is very responsive.

LWD

THanks LWD.

I have now emailed Walt

I have a customrifle in .270Wea with a 27" Lilja barrel. I have just wondered why no really high BC bullets has be made yet in the .277cal.
I am looking for a bullet that has a better BC than the Nosler Par in 150grain I use. I have tried Hornadys SST 150grain, but weren`t accurate enough.
Lost River Ballistics actually made a high BC bullet in the .277cal, but I never got around to try them before they turned belly up.