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SwampYankee · December 22, 2010, 10:44 PM

I get the best accuracy from 180 grain .312 bullets. Many, but not all, .303 bores are oversize. Some are as big a .314-.315, in which case only lead custom cast bullets will do. But generally the .312's will work very well. I have never been happy with 150 grain bullets in .303.

As 44 AMP says, learn how to neck size, the brass will last a long time and be more accurate. It is a tricky business. If you do it right it works well but if you don't, the rounds will not chamber.

And never use S&B brass. It is garbage. Even if you neck size this brass you will get a ton of case head separations. The Prvi brass is some of the best on .303. I buy the ammo, shoot it for decent accuracy and keep the brass to work up my own loads.

I have never crimped this round.

December 22, 2010, 10:44 PM	#8
SwampYankee Registration in progress Join Date: November 1, 2008 Location: I can be found on a number of other forums. Posts: 1,333	I get the best accuracy from 180 grain .312 bullets. Many, but not all, .303 bores are oversize. Some are as big a .314-.315, in which case only lead custom cast bullets will do. But generally the .312's will work very well. I have never been happy with 150 grain bullets in .303. As 44 AMP says, learn how to neck size, the brass will last a long time and be more accurate. It is a tricky business. If you do it right it works well but if you don't, the rounds will not chamber. And never use S&B brass. It is garbage. Even if you neck size this brass you will get a ton of case head separations. The Prvi brass is some of the best on .303. I buy the ammo, shoot it for decent accuracy and keep the brass to work up my own loads. I have never crimped this round.