Been reloading 9mm and 40 S&W for a couple of years and compete in USPSA. I'm trying to work up "accurate" loads i.e. group size <2" at 25 yards. My question involves trying to determine the most critical variables that contribute to increased accuracy or, lose of accuracy. Is there a ranking of variables to manage and/or nail down first to get the most accuracy from a 9mm or 40 S&W handgun load? Is there a force ranking of: OAL Bullet type (FMJ, JHP, Coated, etc.) Bullet profile (RN, FP) Velocity Powder (fast vs. slow) Other? I've been playing with Titegroup, Win 231, HS-6 for 9mm and VV n320 for my STI 40. I'm reasonably happy with 5.0 gr of VVn320 with an OAL of 1.65 for my STI (Major PF); however, I'm struggling to get a good accurate load for either my Glock 19 or my Sig P229. Any help with how you guys do load development would be appreciated.