If it didn't make a difference, why bother even noting the chamber length on the gun (if it is marked) - why not just 12GA and let it go at that?

There are so many reasons why it might or might not work that you can waste a lot of your life at it. Why not just use the correct case and LET IT GO AT THAT?? And besides, you trust these people to know what YOUR gun is doing?

And BTW - I have a Perazzi with .723 bores and it is way soft shooting even with pigeon loads. Gun fit, not bore ID, makes for recoil or not. And that is not JMO, it's a simple fact.

WtS

Dr.WtS
Mysteries of the Cosmos Unlocked
available by subscription