Lead bullets load w/ smaller charge wts than jacketed, so a jacketd starting load should work w/ a lead bullet of the same wt. You can alwyas use heavier bullet data for lighter bullets though. There just isn't a lot of lead bullet data out for the 40. I happily run 6gr under a 170gr-175grLFP for just over 1000fps, shoots sub 2" groups @ 15yds from my very finciky 4006. I consider this a full power load though.
"Given adequate penetration, a larger diameter bullet will have an edge in wounding effectiveness. It will damage a blood vessel the smaller projectile barely misses. The larger permanent cavity may lead to faster blood loss. Although such an edge clearly exists, its significance cannot be quantified".
Last edited by fredj338; 04-24-2011 at 12:41..