.40 S&w ??

[stanley2]

What will be a good alloy for the .40 S&W??

Starting out with pure lead and lino??

thanks

[leftiye]

If you're going to juice it up you will probably need straight wheelweights, maybe even heat treated. For midrange loads I'd see if 50/50 WW/ Pure works (is hard enough). It can be heat treated to about 22BHN, so if it turns out to be too soft, just HT it. I use the 50/50 air cooled in my 9mm at 1000 fps for a target load. If your boolit carries enough lube it shoots purty good!

[KYCaster]

50/50 pure lead/lino will give you 92-6-2 alloy....same as commercial Teracorp Magnum alloy....seems to work very well in the Forty Short and Weak.

Jerry

[stanley2]

Thanks a lot, for the info

What will the approximated hardness for 50/50 lino/Lead be?
And for 25% / 75% Lino/Lead

[leftiye]

IIRC 50/50 is about 12 BHN air cooled. Oops, that's 50/50 WW/ Pure.

[Sundogg1911]

I've been using 75/25 WW/Lino for 40 S&W and usually a 1# bar of 60/40 bar solder in the 30 pound magma pot just to get a little better mold fill out. Same for my 9mm's. 45 ACP I use hardly any Lino if any. Most of my 45 ACP shootin' is under 800 fps.

[Bob Jones]

I've been shooting straight wheel weight lead dropped into water, cast in the Lee 175 grain tumble lube mold with liquid Alox. Working great.

[randyrat]

I use the Lee TL 401-175, WWs+a little tin. Size them as soon as they cool, then let them rest for 2-3 weeks. I like mine consistant in weight 171.5 grs. I've been thinkin about trying some out of 50/50- WW/pure(soft). BTW i also am experimenting with WSF= good velocity/low presure. dissadvantage=low volume