So, it's all about "pressures". Isn't it amazing, that in this particular instance, we are wondering about the difference in ability of a nitro overpowder wad (glorified cardboard), to capture pressure compared to the plastic cup/obturation section of a conventional plastic wad???
Yes, I fully understand that's a gross over-simplification, but that's the bottom line... Wouldn't it be so cool if we had a reliable yet affordable way to determine shotshell pressures??
STOP TYPING!! ;~)
I've been down this discussion "rabbit-hole" before, and am SO tired of hearing "Use approved/tested Loads". Sometimes circumstances and/or component availability preclude that!!
Just my 2 pennies...
Vettepilot