Normal = 65mm.
65mm = 2,559"
2" = 2.500"
2 9/16" = 2.5625"

With only 0.0035" difference I personally consider 65mm & 2 9/16" to be one & the same when it comes to chamber lengths. That's about the thickness of a sheet 16 lb paper. Ordinary 20 lb printer paper measures about 0.004"


Miller/TN
I Didn't Say Everything I Said, Yogi Berra