4227, 
 
you say you got a lot of mark III ammo could you spare a brick? i am also a rimfire shooter   
 
welcome to ASSRA   
 
4227 would that be like IMR 4227 i try and change loads over to it because i like how clean it burns its wonderful in a 38-55 but not as accurate as 3031 but close 
********************************************
rafter-7    \Well I don't know if I want to get rid of any MK III or not but if you want to post your e-mail address I can contact you about the subject.
As far as :4227" goes, yes that would be IMR 4227 or the "Old Schuetzen" can etc. I have tried many powders over the yeards and have found that the "Old Timers" pretty well knew that they were doing and as long as we stick to trying to equal or pass what they were doing and in the manner they did it, IMR 4227 is the way to go. The "new" actions, stocking, methods etc. then all bets are off. It's TRADITION!!
As far as the .38-55 etc. goes, at the end of a long day shooting you will be whipped with the larger caliber unless your built like "Hugs & Kisses"! I shot a .38 M.L. Schuetzen because we discovered that any caliber below .38 presented too many other problems with fouling etc. You seldom see any M.L. schuetzens below .38 (>380) cal. 
In what pwrt of the country are you located?
Regards, 4227