Wow did not know that - can you give me a step by step on how to do ths.
Use the Exquisite/of Quality name in the reforging menu.
DC hammers cap at 2 or 4 self repair. Non powerful vs powerful reforge.
SH hammers cap at 5 regardless if you use powerful or not.
CP hammers cap at 6 or 7, powerful vs non.
I think it's a 1/7 chance to get SR as a mod, but worth the time to make a 7sr weapon for farming purposes IMO.