I am going to be working up a load for just fun, plinking and maybe competition for my new Delta Elite. These do not have to be really hot loads. Only need a power factor of 165 for major, so anything above about 850 fps should do it. I have the following powders available: CFE Pistol, W231, Bullseye, Power Pistol and True Blue. Which ones do you think I should try first?
Bullseye and W231 are really fast for heavy 10mm, but older recipes indicate 5 grains of either should give you around 900 fps. This would be a very economical load, but watch carefully as a double charge would NOT overflow the case.
A starting load of 7 grains of Power Pistol would deliver about 950 fps. Perhaps not as economical as the faster powders, it does have a safety benefit in that a double charge would definitely overflow the case.
I can't find any published data on true blue for 10mm. Mike McNett did some workups here: http://glocktalk.com/forums/showthread.php?t=179345