Well got the Presidio today. Literally just walked in the door from the dealers. We had a pretty bad time this week with weather in Dallas. I still dont have a case trimmer but I got some Starline 50 Alaskan and hand trimmed them and ran them through the RCBS die set. The bolt wouldnt close. The rims are too thick. I measured the rims at .061 - .063 so I took 2 pieces and ran them in a figure 8 on a piece of sandpaper till the rims were .058 and the bolt closes nice, .059 is slightly snug. This is gonna be a nightmare to make cases from 50 Alaskan. I wonder if Starline .50-90 brass is thinner? Trimming the diameter is enough work, but thinning the rims without a lathe will be a pain. I left a voicemail for Rocky Mountain brass but they never called back.
I also ordered the .513 lead bullets from Midway by Montana Precision Swaging - they are junk. The outside diameter varies from .507 to .513, they are way out of round. I also got some Blue Falcons from Gunbroker and they look great but no crimp groove. They will be too short if crimped over the top band so I will try to crimp into the top grease groove, with smokeless powder that shouldnt be a problem.... if I ever get some brass.
Can anyone measure the rim thickness of some Starline .50-90 for me? I need about .057-.059 for a tolerance. I am also gonna try RMC again on Monday and see if I can order some brass from them. This is turning into a real project, but like my dad said, nothing good is ever easy.