Oh yeah I should've mentioned what it actually is. No mystique here...
I called it the 7x60mm. The reamer dimensions are designed to lengthen a 7x57 chamber with the same base, neck and shoulder dimensions as the 7mm Mauser, so the brass can be formed with 7x57 dies, using most brass from the .30-06 family.
L to R, 7x57 Mauser > 7x60 > 7x64 Brenneke
I am hoping the ballistics will comfortably send 120gr to 3000, (there's no practical reason for this is goal, I just want to) and provide good versatility for anything around 140-150gr. I will test up to 175gr out of curiosity though.
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