Originally Posted by mnhiunter2
I am new at working on my long range shooting and have been shooting a 150 gr bullet out of a 300wtby with 77.5 gr of IMR 4831, I cant measure muzzle velocity but I am guessing 3150-3200 and I was wondering how much a 10 mph cross wind would move this bullet at 400 yds? How much will a 20 mph wind effect it?
il'l start the argument.
first off, you have a fine cartridge. you may be aware that the world record for 10 shots at 1000 yds. has been held by that cartridge for about 14 years now.
400 yds.is a cakewalk for that cartridge. wind affect would be minimal unless the trees are bending. the bullet is there, like right now. i would hold over just a little.
that said, your using the wrong bullet for long range in that gun. you will get better results with heaver bullets. certainly initial velocity will be lower, but at longer ranges that will reverse itself. wind affect will be less also. id be using something in the 168 to 190 range. sierra machkings would work fine, and yes they will perform well on game