I have a factory Remington 700, 22-250 with a 1/14 twist. I am presently shooting Berger 52gr bullets. SAMMI specs say the mouth of the case should be .253.
After firing my cases, the neck winds up being should expand. In my case, a loaded round measures .251. After it is fired the case mouth is mostly .251 and .252 but some are as big as .255.
I recently turned 20 necks to .013. This was before I measured the cases today and found what I believe a screwed up bunch of numbers. The measurements do not change between the turned necks and the unturned cases.
In order to get the bullets anywhere near the lands, they are seated about 1/8 inch in the case.
I don't understand what is going on. Does anyone have an explanation?
After firing my cases, the neck winds up being should expand. In my case, a loaded round measures .251. After it is fired the case mouth is mostly .251 and .252 but some are as big as .255.
I recently turned 20 necks to .013. This was before I measured the cases today and found what I believe a screwed up bunch of numbers. The measurements do not change between the turned necks and the unturned cases.
In order to get the bullets anywhere near the lands, they are seated about 1/8 inch in the case.
I don't understand what is going on. Does anyone have an explanation?