My Reload Story
At first, I succumbed to all the hype about headspace etc. Bought gauges and attended Hungry's Clinic. Mine shoots fine and there was nothing to worry about, unless my goal was match shooting, which I have not any illusions (delusions??) about.
I have gotten some incredibly tight groups with my recipe. I full length resize and leave about 0.005" for the resize. I neck trim, using the case tolerance measurements found in most reloading manuals. I full size due to the fact that I have a tight chamber already and not much effort to resize.
My best recipe is 150 gr hornady BTSP's, 250 magnum primers, Win 748 @ 45.5 gr. Another good one is using 4064 @ 43.5. Win powder seems to shoot much better (groups) and there is less debris in barrel and piston to clean out after.
Also, Win 748 seems to produce better groups in colder weather. Another interesting observation was the comparison between factory (Rem and Win) ammo, 150 grs. There was slightly more case deformation and in a few rounds, signs of excessive pressure. The 748 recipe has consistent casing measurements and very little pressure deformation.
I use the magnum primers due to the extra charge (supposedly) but more so for the harder primer. Standard primers tend to be a bit softer and I have noticed differences in how the firing pin strikes the primer.
I am still experimenting with loads and will keep everyone posted. I did note somewhere in the published data that the M14's are designed to function at 2,700 fps to 2,800 fps. I shoot for just over the 2,700 range, based on powder charges.
Most of all, these are my recipes, which I have tailored for my rifle are based on my observations, reloading data and the specs for factory and NATO rounds (which are completely different). Your rifle is going to be different, so work up loads and then compare with mine. It would be foolish to start with my loads just because that is what I do. Besides, tailoring your custom load is half the fun.
Happy shooting
