Re: .240 Gibbs
It really depends on the brass you want to use, if you do not push your 240 HARD, then Winchester 25-06 brass ($45.00 per 100 @ PV) would work fine.
I tend to want to get all that I can out of mine and use Lapua 30-06 brass ($85.00 per 100 @ PV). I am getting about 10 firings per case, so 100 pieces will probably be enough to shoot the barrel out.
If your chambers neck dia is not .277 or bigger you will probably have to turn your necks if you use Lapua brass.
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