Lyman Calls for 10 to 1 380 Auto

[saphelps]

Cast some TL-356-102-1R today and was looking over the Lyman load guide for this cast. Where everything so far has been #2, this one's calling for 10 to 1. What is this and is it reproduceable?

Figure I should ask, the casts are COWW (no stick-on in batch) with some 50/50. If I need to remelt, I guess I should find out now :)

[Sgtonory]

Would assume 10 parts pure lead and 1 part Tin. You will be fine with straight COWW.

[2wheelDuke]

I've used isotope lead AC which is close to air cooled wheel weights. I've also used generic range scrap in that boolit with good results. Your gun is the variable, but I'd think that COWW is just fine. How are you lubing and what are you sizing them to? As long as they fit the gun, you should be just fine.

[saphelps]

Lubing with LLA. Have the ingredients to do up some 45/45/10, though.

LCP bored at .355 and running everything through a Lee sizer. i like that method because i can cull anything that just goes through without any resistence.

I know just enough to know to ask first when I come across something unfamiliar.

Thanks for the info!

[myg30]

When you get time, check this out.
http://www.lasc.us/CastBulletAlloy.htm

Mike

[pworley1]

I have been shooting COWW cast from the Lyman 256242 in both 90 and 120 grains with no problems for years.

[Bigslug]

Would assume 10 parts pure lead and 1 part Tin. You will be fine with straight COWW.

Correct.


You will be fine with straight COWW.

Almost undoubtedly correct. You'll have about the same hardness either way. I'm just puzzled why Lyman would call for what is regarded as a pretty high-end long range buffalo rifle alloy for a low-speed, short range pocket auto cartridge. Seems kinda like running 97 octane in a Ford Escort.

You don't even need metal that hard if all we were concerned with was the velocities involved. All I can figure for Lyman's spec is that a little harder slug might help with reliable function in some of these pocket autos with stiff-spring, fast-cycling blowback actions and sharper angles of feeding. LCP is a more gentle-running recoil operated gun with a tilting barrel, so probably more forgiving in this regard.