Your gun will tell you what is an accurate load. WST is a good start. I run 4.7gr under a Win 230grFMJ @ 1.250"-1.255" OAL, the crimp measures around 0.471-0.4721" w/ a std TC (no LFCD please). Your gun may shoot that well or not. For best accuracy, I don't find FMJ terribly accurate. A Sierra JHP or XTP have always shot better, but way too pricey for practice ammo. I can even get a well cast 200gr lead bullet to shoot betterr than most RNFMJ.
"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; 12-11-2010 at 10:15..