I would go to the range again and fire 3-5 shots and eject the last round to check for crimp jumping. I would crimp them till you feel the case mouth bottom out into the groove under, and with, firm pressure. I was plagued with this until I got a custom expander plug for my cast bullet shooting needs.
Also I would "Fire Lap It ! ". I found this a much better investment then any trigger job, custom barrel, mods, etc. etc. A fire laping kit from LBT will make your ruger an outstanding shooter. Be prepared for around 200 or so lapping loads to get the forcing cone restriction out of your stainless steel Ruger, it is worth the effort.
Ruger SRH 280g LBT's at 1185 & 1330 fps = 1." @50yds
Ruger SBH 280g LBT's at 1185 & 1330 fps = 1." @ 50yds
Loads are with AA#5 and H4227. AA#9 is just as good at 1280fps
These are both fire lapped.