Originally Posted by mathman

According to a certain regression plot (Denton Bramwell) 50,000 CUP correlates to about 58,000 PSI.


PSI = -17902 + 1.51586*CUP

Of course that’s correct but to put it in an
Elementary Equation for US laymen....... blush grin

CUP X 1.51586 minus 17902 = PSI

Note: Mr Denton states that is for rifles and it’s not the same for handguns (pistols).

Now, don’t ask me why/how ! wink

Jerry

jwall- *** 3100 guy***

A Flat Trajectory is Never a Handicap

Speed is Trajectory's Friend !!