175 gr swc from S&S Casting over 5.0 gr of WST works for us,1.185 oal, mixed brass and any small rifle or small pistol primer.
WST is temp sensitive (the hotter the tempeture outside the slower the bullet travels) so make sure you crono with your load at temps above 80 degrees so you know your fps. 80 or lower is pretty consistant but 80 on up it starts running slower.
WST is clean burning, best for no smoke with lead and cost is low.
S&S cast bullets are about $70.00 a thousand for 175swc's and he has 140gr 180gr and 220gr also...great cast bullets.