Cast bullet loads for Surplus Rifles
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I'll have to go back through my "Handloaders Digests" to find a good article on cast bullets for most Surplus rifles.
I believe the article was written by C.E. Harris, who contributed many articles to the "American Rifleman", and leaned toward cast bullets. In this article, he suggested a load of 13 grains of Red Dot. I have used this load as a reference or starting load for most military rifles such as .303, 7.62X54 Russian, 7mm Mauser, 8mm Mauser, .308, 30-06, 30-40, and various other calibres of the same case capacity.
WARNING....DO NOT USE THIS LOAD IN SMALLER CASES SUCH AS 7.62X39.
Back many moons ago, when I was shooting targets, I used up a lot of cast bullets in .303 calibre. I had one rifle set aside for cast bullets only, and used it for practice. With proper sight adjustments, I could shoot about as well with a cast bullet to 300 yards as I could with issue Mark 7 ammo.
One critical thing you have to do. Clean out ALL the copper from the bore. If you fire cast bullets, then jacketed bullets or vise versa, you will not get the best accuracy. Really clean out the copper fouling.
I used to shoot cast bullets out to 600 yards with the .303. I used the Lyman 311299, about 205 grains, unsized, and Texaco Hot Box lube (used on railways). The rifle had a minimum bore diameter, the mould cast a 1/15 lead mixture bullet a bit oversize at .314.
I found heavier bullets tend to group better. Possibly the lighter ones do not stabilize well in the military bores. You should slug the bore and measure it. For the .303, I have seen bores running up to .319 diameter. A bullet about .002 oversize has worked best for me under most circumstances.
Lyman MADE a lot of bullet moulds in different sizes. They have cut down to a few calibres now. In the .30 calibres or .303 you could once get .308, .311,.313,.316, and .319 moulds. Also, Lyman moulds can be marked with the number and the letters "U" or "US" or "OS" meaning the mould will throw the bullet UNDERSIZED or OVERSIZED. You can still find the older Lyman moulds on E-Bay.
Lubricator-sizers such as the Lyman and RCBS, etc., do not give the best sizing accuracy. This type sizer pushes the unsized bullet downward BASE FIRST. If the nose punch is not perfectly aligned, it can tilt the bullet and you size more on one side than the other. Also, the older Lyman sizer dies had a step on them. When you pushed the bullet into the die, it shaved off a lot of lead. Newer ones were tapered, and worked better. I found the best dies at the time were home made ones that mounted in a reloading press and pushed the bullet up NOSE FIRST. There seemed to be less distortion to the bullets. LEE later made sizer dies of this design.
I still play around with cast bullets. My latest use is in a 9.3x57 Husqvarna. The larger bores seem to work better with cast bullets for accuracy and hunting. Millions of Buffalo were taken with cast bullets, so they are effective.
The way things are going pricewise and availability of components for reloading, and ammunition, I keep lots of primers, enough powder, and bullet moulds for most of my favorite rifles and calibres. It is a cheap assurance that I can still enjoy firing my rifles if need be.
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