Don't use light loads. First, make sure there is some interference when you close the bolt. If there is not, you should neck up to 30 then neck back down to 280 with the die backed out to provide interference at the shoulder/neck juncture. Load the 140's on top of a near-max load of Varget then spend some time at the range. There is little point in wasting a primer and powder building blanks; unless you just want to make noise. My preference is to fire every shot with the intent of hitting something. GD
