Raf does make some good points but,I can say loading for the M1 is'nt as dangerous as it sounds,But,for a novice reloader with little experience it very well can be, There are some considerations that must be taken in and understood before you start, and it helps to have a good understanding of how the rifle works before you start,But, I've found that case prep and powder selection are two very,very important areas to consider, Raf mentions the use of mil-spec primers, I disagree,(using mil-spec primers is'nt a bad idea, I just don't think they're nessessary) I've been using commerical primers on both my Ar's and in both of my M1's with no problems after 1000's of rounds, the key here is case prep... I bought a primer pocket reamer set from sinclair awhile back(chucked up in a cordless drill) and as part of the case prep I ream the primer pockets with this tool, this results in a primer pocket that has a consistant depth from case to case ,and allows one to seat a primer BELOW flush, eliminating the possiabity of a slam fire,(you'd be surprized how many variations in primer pocket depth you'll find from case to case) most slam fires are caused by "high" primers, ones that are'nt seated below flush,I also use this reamer to clean out debris left from firing,and to insure the primer seats below flush everytime I load the cases, one also wants to keep an eye on case legnth,this could also be another source of a slam fire, I trim mine every time I load them,and toss them after 5 loadings,By this time the cases are getting stretched pretty good from sizing and firing, and firing them any more than that is asking for a casehead seperation, and possiable slamfire with an unlocked bolt, I've also used a vareity of bullet weights 147-169 with good results..However the M1 was not designed to shoot bullets heavier than 172 gr,the 147's are about as light as you want to go as well.So, you are somewhat limited with bullet selection, Powders, the key here is not to use too slow of a powder, this will cause trouble,(a bent op-rod at a minium) the gas system on a M1 was designed for 4895 orginally, however 4064, will also work very well and in my case I've been using surplus WC-846 (BLc-2) and have had no problems whatsoever, check out
[email protected] there you can find some M1 loading info reprinted from the NRA,(carefully work your loads up) that's what I've been using for loading info..the key here is carefully prep your cases, keep track how many times they've been loaded, use components that are compatable with the M1's gas system(very important) and always, always, make sure you primers are seated below flush,(check'em with your fingers before you box'em up) and you should,nt have any problems...