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Lead alloy ratio for .45acp and .30 cal 308

hooksz86

Sergeant
Full Member
Minuteman
Sep 14, 2011
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panhandle of Oklahoma
So Im getting some molds for a 45 auto and a .30 cal for a 308. These will be the 225gr and 160gr bullet mold. I'v done this with my dad for his sharps 45-70 but wondering if I should go with a differant ratio on my lead. Any of you guys have experiance with this for either of these bullets. I will be using modern day powder, HS-6 for the 45 and varget for the 308. Also wondering on the patch below bullet to help from as much lead fouling. And what about velocity or powder charge, can I shoot the same load as what I do now with similar bullet weight? Not really wanting to shoot these all the time, just as you all know bullets are getting hard to come by and I would like to know I had somthing that works. Thanks for the help guys.
 
Water quenched wheel weights have always worked for me, through the various magnum revolvers, 45-70 and some limited work with 140gr 7mm bullet in 7 TCU Contender. Drop straight from mold into cold water and let age harden a couple of days and they should attain most of their final hardness. They should run about 20-22 brinnell and hard enough to hold the shallow rifling of most 1911's and your 308, though I'd advise a gas check on 30's if you are going to push them beyond medium velocity. Try castboolit.com site for a lot of useful tech data. Take care to correctly size bullets and use a good lube.
 
+ 1 on the castboolit site, lots of good info there! I shoot straight wheelweights in my handguns, both revolvers and autoloaders. I add some linotype/monotype to wheelweights in my rifle bullets. I don't shoot a lot of cast bullets in rifles. Almost everything that I load for handguns is cast. Water quenching is a cheap, easy way to get bullets harder. Correct diameter is important. Lightman
 
I run about a 12 in 1911s. In my silhouette days I used Carlton Shy's alloy formula: Six parts WWs, three parts linotype and one part chilled shot (IIRC). Water dropped got me about 25. You could heat treat and hit 30 plus, but I never felt the need.
 
Good advice there. You might consider the Lyman 311291 in the .30 caliber. It penetrates a deer completely from almost any angle. In the .45-70 I like the 350 grain flatnose. If you need more expansion either a soft nose caster or make a split nose with strips of aluminum foil crosswise in the mould.
 
I think a good starting place would be the Lyman #2 alloy: 90 percent lead, 5 percent tin and 5 percent antimony. Some tin is particularly important if you're using Lyman molds. I was getting undersized bullets with wheel weights; Lyman support said their molds are cut for the #2 alloy. So I added some linotype until the mold filled completely. The ending tin content was probably around 3 percent.

And another vote for the castboolit forum. Some very experienced people and lots of references.

Cheers,
Richard