1% 0f 14 Pounds = ?

[Treetop]

I'm trying to add 1% of Tn to 14 lbs. of a 50/50 mix of pure lead and crimp-on WWs.

Using a proportion equation, I'm getting around 98 grains of Tn. Does that sound about right?

1% of 14# = .014 lbs, so:


1#/.014#: 7000 gr./X

7000x1 = .014 X

X=98 gr. I think...

I'm ashamed to admit that my math skills have really deteriorated over the years... Thanks, Tt.

[marvelshooter]

I get 980 grains or a little over 2 ounces. 14 pounds is 98000 grains and 1% is 980. Hope this helps - Dan

[imashooter2]

(14 * 7000) / 100 = 980

[Treetop]

Oops! Thanks for the math correction! 98 gr. just didn't "feel" right to me... Tt.

[13Echo]

2.24 oz round off to 2 and1/4 oz. or, as calculated above, 980 grs.

[bpratl]

I'm trying to add 1% of Tn to 14 lbs. of a 50/50 mix of pure lead and crimp-on WWs.
I'm ashamed to admit that my math skills have really deteriorated over the years... Thanks, Tt.

I agree. I try to make it simple by changing everything to OZ's so 14 lbs x 16 = 224 oz's x .01 ( 1%) = 2.24 oz's of TIN.

[JSnover]

I agree. I try to make it simple by changing everything to OZ's so 14 lbs x 16 = 224 oz's x .01 ( 1%) = 2.24 oz's of TIN.

After you get that squared away, make it even simpler by casting your tin into one ounce boolits. I use an old .54 Lee mold. 16 one pound ingots + 2 Tinlits. Bingo!

[SSGOldfart]

yep almost 2 oz.

[mold maker]

+1 on the tin/boolit ingots. Unless you have to be exact, this makes it really easy.

[geargnasher]

I agree. I try to make it simple by changing everything to OZ's so 14 lbs x 16 = 224 oz's x .01 ( 1%) = 2.24 oz's of TIN.

That's exactly how I do it. Much simpler to me.

Gear

[cbrick]

I convert to ounces also but not so much because it's easier, because I weigh the ingots on a postal scale that weighs in ounces. If I add 15 pounds of ingots = 15 X 16 = 240 ounces X 2% Sn = 4.8 ounces Sn.

Can't get much simpler than that and it keeps the added Sn percentage uniform regardless of the amount of alloy added to the pot.

Rick

[runfiverun]

heck i take into account that theres some tin in the ww's already.
if you add 2% tin to a 50-50 mix you are gonna cause alloy issues that will cause hard spots of tin surrounded by soft spots of unalloyed lead.
i'd just add one [1] percent tin for a more balanced alloy that will be cheaper and superior.

[cbrick]

I use 0.5% Sn as the assumption in WW and between 2-3% Sb thus the addition of 2% Sn.

Rick

[waksupi]

My math skills suck. When I need tin in a small diameter boolit, I start adding a bit at a time, until I get good fill out. Real scientific, huh?

[Sonnypie]

I've been getting my tin from Lead Free solder. (Plumbing solder)
It's an expensive way to acquire tin (Sb), but it's easy to play with.

I like the 1 ounce cast ingot idear.
Let's see... a one ounce shotgun slug mold might be just the ticket. :bigsmyl2:
Or maybe a buckshot mold, so you have those pesky part-of-an-ounce sized pieces.

Everything in my life has a dual purpose. ;-)

Just don't let junior load your tin supply into some shotgun loads. :dung_hits_fan:

[Sonnypie]

My math skills suck. When I need tin in a small diameter boolit, I start adding a bit at a time, until I get good fill out. Real scientific, huh?

Well, when cowboys was making boolits at the campfire, they didn't have any fancy britches scales to use. ;-)

Let's see... about an arms length of lead free solder, to a full pot of melted shot...
Just Right! [smilie=l: