Please explain how the “Hardin Crimp with a T” makes using 2 3/4 data in same hull with the same data save roll crimped from 2 1/2 would raise pressures or invalidate the load?

I have been of the belief that 2 3/4 load data that fit in 2 1/2 lengths hulls were ok, am I wrong, and if so why?


Michael Dittamo
Topeka, KS