I have a couple of 16 ga guns that have 2-1/2 inch chambers. I shoot 2-1/2 reloads and 2-5/8 reloads in these. I live in AK and it's a pain in the ass. Modern guns use 2-3/4. I cannot get your RST loads here...period. What is the view about opening guns to 2-3/4 from 65mm?

I have a really perfect...near new GUyot 16 and a very tight and proper guild 16. I load for them but what's the limit on this. Am I making a mistake by lengthing chambers?

Mike