I shoot my reloaded bismuth 1 1/8oz out of all my vintage Damascus and steel guns. I load 1 1/4oz for my 10ga guns. I used 10 boxes of Rio bismuth this year and was very happy. I can't reload bismuth for what Rio sells it for especially when it went on sale at Academy Sports this last fall.
The best non-tox in my opinion is Kent TM. I use it in my Super Fox only.I use it for late season mallards and it is very deadly and patterns very well in my Super. I look forward to Kent Bismuth and will give up reloading 12 GA if it becomes readily avaliable and priced competitively with Rio.