morcey2
Member
I've got a 257 roberts that I had built last year. Like an idiot, I wasn't buying up every bit of 257 Bob brass when it was available everywhere last year. I only picked up a bag of 50 because "I'll get more later." Now, there ain't no more later. Those 50 are currently loaded, but I have another bullet type I want to try.
I picked up a bag of about 200 once-fired 6mm remington cases. They range in quality from brand-new/never-loaded to reformed 280 and 30-06 cases. The reason I picked them up is that I'm having a 6mm built this spring. After sorting through them, I've got about 120 usable cases. Of these, I was going to form about 25 of them into 257 roberts to load with 115 gr ballistic tips & H100V. The 6mm has a slightly steeper shoulder angle and the 50 cases I've resized so far are about 0.015" shorter at the datum line (0.375" diameter insert in the hornady case length gauge) than the normal 257 Roberts cases. 1.775" v. 1.790".
Is this enough of a difference to worry about? I want to be able to blow out the shoulder and neck to the correct dimensions without stretching the case walls if possible.
Matt
I picked up a bag of about 200 once-fired 6mm remington cases. They range in quality from brand-new/never-loaded to reformed 280 and 30-06 cases. The reason I picked them up is that I'm having a 6mm built this spring. After sorting through them, I've got about 120 usable cases. Of these, I was going to form about 25 of them into 257 roberts to load with 115 gr ballistic tips & H100V. The 6mm has a slightly steeper shoulder angle and the 50 cases I've resized so far are about 0.015" shorter at the datum line (0.375" diameter insert in the hornady case length gauge) than the normal 257 Roberts cases. 1.775" v. 1.790".
Is this enough of a difference to worry about? I want to be able to blow out the shoulder and neck to the correct dimensions without stretching the case walls if possible.
Matt