Re: Reloading for new M14
I load for three M1As and four M1 Garands and have excellent results. You may or may not need small base dies, I don't. I am using the RCBS .308 X-die.
First of all get a Hornady 7th edition cartridge loading handbook. It has a separate section for the M1A and the M1 Garand.
Expect only 4 loads out of your brass and that is from the very beginning with new brass. You may be able to get more but case head separation is inevitable and dangerous.
There are several suitable powders but my personal favorite is IMR 4895.
Use only CCI #34 primers and make sure they are all seated below flush.
If you plan to use military brass, you will need a crimp removal tool.
My standard target bullet is the 168gr. SMK and my hunting bullet is the 168 gr. Nosler Ballsitic Tip.