I have early to mid 60s beretta sxs 12ga
not using it much and found someone to sell me sleeves 45-70
The chamber is 2 3/4 so not sure if tested a magnums
I know beretta actions are fairly robust
Think this would be ok w factory low pressure loads?
What would I look for?

Would like to try something like this before spending $$ on jefferys or h&h

Thanks