200-grain coming out at 212-grain

[RG1911]

Using the spreadsheet calculations, I made up 130 pounds of Lyman #2 equivalent alloy. However, my .45 boolits from my H&G 200-grain SWC mold (#68) weigh 212-213 grains, or about 6 percent too much.

I'm assuming this means that I don't have enough tin in the alloy. Does this sound correct?

Also, if I wanted to melt it all and add more tin, I would need to add an extra 6 percent tin, which would be approximately 8 pounds. Does this sound correct?

Thank you,
Richard

[Larry Gibson]

That would be a waste of tin. Was the H&G made for #2 or linotype? Additionally why the need for 200 gr exactly? Why not just work the load for the 212 gr bullet, cast, go shooting and have fun?

Larry Gibson

[Mk42gunner]

As long as your boolits are filling out correctly, I wouldn't worry about it.

Molds vary. I have three Lyman 452460's two doubles and a four cavity, supposedly for a 200 grain SWC. One of the DC drops my ACWW at 207, the four cavity drops the same alloy at 204. I haven't used the other two cavity; but I bet it falls somewhere in the same range. I cannot tell any difference at normal .45 ACP ranges with my Kimber.

Robert

[RG1911]

Good advice (I'm just a trifle anal). The boolits are filling out just fine, although they're coming out about .003 oval. Ballisti-Cast inspected, tweaked, and tested the mold, but the boolits are still out-of-round, so I've ordered a new mold.

Probably shouldn't. Now I won't be able to blame my misses on defective boolits.

Richard

[captaint]

Maybe in theory, you are correct. However, with 5% tin in the mix already, that is certainly more than enough. Not at all unusual to have a mold cast heavy. I have a bunch that do that. I don't worry over it.. Mike PS. Is H&G swapping you a new mold ??

[RG1911]

PS. Is H&G swapping you a new mold ??

Sadly, H&G closed shop a number of years ago, so I'm simply buying the same mold from Ballisti-Cast, which now does the catalog of H&G molds.

Richard

[Shiloh]

Most of my molds, factory mold, run heavy. I work withthem as is. Part of the reason is that my pistol velocities will run on high percentage
range scrap. Harder, lighter boo;it are sweetened with lino, making them a bit lighter.

Shiloh

[44man]

No worry what so ever. Forget it and shoot.
Leave the tin alone, you don't need much at all.