As a rule, I don't use any antimony in my bullet alloy. Instead I use pure lead and tin to a 20-1 or 30-1 ratio. That gives me good mold fill and subsonic bullet expansion. Of course, this can only work (without major barrel leading) by coating the bullets with PC.
I also tailor the bullet to the cartridge and job I need it to do. For example, in my son's 357 Maximum rifle I load 200gr and 220gr MP Molds hollowpoint bullets cast at 30-1 to 1100fps. They shoot great, keep the barrel clear of any leading, and kill deer.
In my 35 Whelen I shoot a 245gr Saeco RNFP bullet cast to 20-1 and 1980fps. The FP handles the velocity very well and expands beautifully.
Thanks, Dinny
