Originally Posted by
vans
I have the same gun, I have used 90 grains forever with it, have played around with different loads through the years.
Currently shooting 275 gr. Barnes with 90gr. triple seven loose powder
Works great for me.
I shot that same load in my old ThunderHawk 54 for years with no complaints. Mine was the 50-275gr Expander MZ. Its a great bullet but pricey.