need to know a few things first. What ruger is it? is it the old large framed ruger or the newer small framed guns and what kind of speed are you wanting to achieve. I wont post loads here but if you figure out what you want pm me and ill give you some advise. Personaly i quit using bluedot altogether. Ive alllways found powders that gave better accuracy and i dont like the fact then when you push it to top end loads it goes from mild to wild in the pressure dept. with just a small increase in charge weight. Ive seen loads go from looking and extracting normaly to flatened primers and pound up cases with just a half grain increase in charge weight. Theres better powders in that burn rate like hs6,hs7,2400, ect. For mid range load probably my favorite is hs6