Hi Robman I've been using WST for 20 +years for 45 and 5 years in 40 with 180 gr using moly , MG, and lead
Bullets. Great powder meters well in dillon 550 and 650. BUT you do know it's an inverted powder. You can really get some high pressures in temperature changing weather. I finally quit using it in 40 and went to Universal Clays. 4.5 with a Bayou Bullet and 4.4 with a Black Bullet International will give me a PF of 169 , 170 with an overall of 1.163