Hi, I could used a little advice on the .480 Ruger. I have carried the Ruger Super Redhawk on 2 previous trips to Alaska and have been trying to work up some heavy loads for it. Have been reloading for 40 years but no wildcatting---always just followed the manuals. Trouble is there aren't that many heavy loads published for the .480.
I started out with John Taffins suggested load of a 425 gr. Cast Performance Bullet LFNGC over 19 grains of H110. for 1100 fps and started working up from there. when I got to 21 grains of H110 I started getting a compressed powder bulge in the case. After reading some other reloading articles I took some other writers advice (I forget which), and started crimping in the first lube ring behind the crimp ring and wiping the excess lube off the loaded cartridge. This gave me plenty of additional case space and the bulge went away. I am now up to 23 grains of H110, with the 425 grain CPB and CCI 300 large pistol primers with an average of 1216 fps. The case ejection is just a little stickey, and the primers show no sign of excess pressure (flattening, cratering, punctures, or black rings around the primer). The Hodgdon online loading data only goes up to 405 Grain CPB with a maximum load of 22.3 grains of H110, and I am up to 23 grains H110 behind the 425 gr. CPB. The cartridges shoot well (2in group, offhand at 10 yards, but I am getting way into uncharted territory (I have started wearing my crash helmit/visor over my safety glasses and gloves when I raise the powder charge). Does anyone know something about working up heavy loads that possibly I am missing???
Another thing that bothers me is that I have increased the powder charge by 4 grains (about 20%) and only increased the fps by 116fps. Could this be caused by increasing the space in the case by crimping in the first lube ring?
While I can shoot a 2 inch offhand group at 10 yards with this round there is a lot of difference between a bullseye and the nose of a Grizz (bobbing up and down)at about 30 miles per hour, so in reality I would probably go for center mass and would like to shoot the biggest bullet I could at the highest fps possible if I ever get in that situation. By the way I do carry a 500 Mossberg shotgun loaded with Dixie Terminator slugs at 730 grains @1200fps,
but lets face it we all put the long gun down sometimes when we shouldn't and thats when Murphy usually gets us! By the way those Dixie Terminator slugs of 730 grains@1200 are pretty impressive. I have a folding stock on my shotgun and after tapeing some foam pipe insulation where my cheek meets the stock and doubleing that on the butt of the stock it doesn't bloody up my mouth or bruise my shoulder too much,
Thanks in advance, Lee