linotype

[white eagle]

How much lino would you add to a 10#pot of w/w to harden it up
I am casting for my 358 win rifle probably around 2300 fps
these will be a/c no w/q

[grumpy one]

Unless you have an exceptionally good barrel, that sounds like mission impossible. Most people working with a velocity that high would be wanting 25 BHN or higher, and straight linotype is only 22 BHN (most linotype that you buy is actually depleted, and is only about 18 BHN). I suggest you think in terms of heat treating your bullets, and using fairly low alloy (preferably 3% antimony, and 3% tin as well if you will hunt with them). That way you can vary the heat treatment to get the hardness that your load and barrel turn out to need.

[white eagle]

I might be looking at the usage of lino wrong
I thought I could alloy it in and make my existing melt harder
must not be ehhh /.????

[1Shirt]

Am wondering about what blt wt. you are talking about driving out of the 358? I long ago traded my 99 Sav 358, (big mistake), and the 358318HP mold for it, (no longer had a need for a 35 cal rifle). My records show that I was using about 26 gr. of 2400 under that blt, and getting around 2000 fps. Would think with cast, in order to get up to 2300 and with accuracy, would think you would have to be shooting 180 or so gr. blts, and agree with Grumpyone regarding bh. Think you would need to be water dropping at minimum, and looking for something in the 25-26 bh bracket. That said, they would probably be brittle and not be suitable for hunting IMHO.
1Shirt!

[white eagle]

so basically lino is just used for tin

[fryboy]

and antimony ...... cut back it makes great # 2 alloy , and one can also blend it with pure to get kinda close to ww alloy , i mostly make # 2 alloy with what i get and then if needed heat treat them , # 2 is a lil harder than avg ww's yet the hi tin also helps the malleability of it IMHO . i hear straight lino makes awesum 22 boolits , if they shatter on a prairie dog no biggie .... lolz

[alfloyd]

"so basically lino is just used for tin"

No, lino is used to add antimony (12%) and tin (4%) to your lead mixture.

This makes it so you can hardened it by heat treating or water dropping.

[Cowboy T]

If you mix it in with some WW, which often have just a little arsenic, then the arsenic will help harden things even better. BHN's of 30 are not unheard of.

For your application, I'd really be looking at water-quenching. Is there something preventing you from doing this?

[fredj338]

How much lino would you add to a 10#pot of w/w to harden it up
I am casting for my 358 win rifle probably around 2300 fps
these will be a/c no w/q

Adding 50/50 mix will certainly harden the ww alloy, but as noted, lino is about 22BHN, ww 13BHN, so you are going to end up somewhere around 16-17BHN. Water dropping will get that up into the low 20s.