Home Forums Hunting & Shooting General Big Game What grain bullet to use?

I have a 300 Wby Vanguard. The factory ammo I tried I shot 1 1/2 groups at 100. I tried Sierra and Speer boat tails when I started loading in 165 and 180 same thing 1 1/2 to 2"
Tried flat bases same weights they shot a little better.
Tried some 180 Grand Slams and RE 26 under an inch from bottom up to where I stopped. I have killed a few deer with them and they all just drop dead at the shot. It isn't bruising up as much meat as some of the smaller cartridges I have used.

My dad was a one rifle, one load guy. Killed everything (deer, elk, moose) with his 06 and 165 grain Nosler Partitions, nothing else. I put way too much thought into it and have a reloading bench with all kinds of different calibers and bullet weights. But I like that, so...
Stick with what you know and have confidence in, 165 grain and your 300 Weatherby will do it all.

165's are your huckleberry