Back in November of 08 I decided to develop a sub-MOA, 3000fps load for a 30 caliber rifle. It took awhile, but I believe I have "got er done."
The Rifle.
In order to get the velocity I wanted with this weight bullet I chose a 300RUM in a Savage model 116. It is stainless with a laminated stock. It came from the factory with pillar bedding, and I added glass behind the recoil lug, and under the front receiver ring and tang. I topped it with a Weaver T15 for this test. This rifle will group ¾ to 7/8 with good jacketed bullet loads.
The Bullet.
The most consistently accurate 30cal bullet I cast is the Lyman 311284 so this is the one I worked with. The alloy is a mix of WW and Linotype. I added lino. until an air cooled bullet tested 16.0 BHN on my Lee tester. The bullet was then sized .3015 with a push through die. This gave me full length bearing surface. The bullet was then patched with 16# green bar printer paper and allowed to dry overnight. I then clipped the tail, lubed with White Label BAC and run through a .310 push through die. This left the bullet .311 and ready to load. The finish weight, with patch, was 202gr.
The Brass.
I used new Remington brass. I full length sized them and sorted by weight allowing no more than +/- 1%. It was then trimmed to length, outside neck turned to .012 thickness, the primer pocket reamed to a uniform depth, flash holes drilled uniform and deburred. I then loaded with a 180gr. Core Lock and H4831 to fireform. The test load was then loaded in UNSIZED brass. I tried H1000, Retumbo, and finally settled on reloader25. The starting load was 88.0 and I worked up to 93.0. This gave me 3069 with no signs of excess pressure. Oh yes, the primer was a Federal 215. The bullets were seated about ¼ inch into the case and finished seating when the bolt was closed. This gave me an OAL of 3.670.
The Test.
Testing was done over 2 days. Shots were fired over a bench rest with a windage and elevation adjustable front rest and "bunny ear" rear rest. Twenty 3 shot groups were fired allowing the barrel to cool completely. The smallest group measured .760 and the largest was 1.140. The overall average figured out to .992. Mission accomplished, but just barely. So what good is this load? Not much unless you like poking holes in paper. Next step will be to neck size, seat to correct OAL and see how they shoot. Might make a good hunting load that way.
[FONT="] I do load some jacketed 180, 200, and 220 grain bullets for this one. It now wears a Simmons 3.5x10 scope. Maybe some day I can go elk hunting.[/FONT]
