Well its a blizzard and I need something to do so I figured I would load some 9mm and 38spl and some of these posts where guys are shooting one ragged hole with a handgun got me thinking. How do you guys get a 9mm round to shoot such tight groups? Adjust powder charges and OAL until you find something that shoots very well? Try different primers and powders until you find something that shoots well? I have some RMR 124gr RN, Match winners, MPR and plated hardcore match with s&b SSP and HP38.