I loaded up 8 more 7x57 brass with false shoulders again. This time the shoulders are out farther and it is more difficult to close the bolt. I loaded 145gr Speer hpbt match bullets, 46.5gr H414, at 3.010”. The brass (at the shoulder) measures x.x39” to x.x54”, and I have each piece measured and marked so when I measure after firing I can see how much each one has grown.




JTD