Rmr lead+rotometal superhard+tin

[358429]

I am getting ready to fire up the turkey cooker. The steel pothttps://uploads.tapatalk-cdn.com/20211023/b7f583b128dd079f5931aaf63c987da0.jpg has 60 pounds of rocky mountain reloading lead frozen into the bottom of it.

On the side I have one ingot of Roto metals superhard and 30 ounces ofhttps://uploads.tapatalk-cdn.com/20211023/e064e7909742dacef3d4fdf3557b4780.jpg pure tin.

I'm setting up for melting down and removing half of what's in the pot, then mixing in the metals. Based on the lead calculator I was looking at: https://uploads.tapatalk-cdn.com/20211023/94973bcca5c7b83787b8c2fcd6ed18ae.jpg30 pounds of range scrap+ one ingot of super hard + the 30oz tin = approximately Lyman number 2.

What do you all say?

I want to move away from the monkey metal scrap and towards something that I know what it is, so I can improve my casting and reloading.

Thank you in advance for sharing any ideas. It ishttps://uploads.tapatalk-cdn.com/20211023/9802ba25f1f1736d9bf3cb2ab6a52b34.jpg a beautiful day in the mountains[emoji3]

[JM7.7x58]

Two and a half percent tin and two and a half percent antimony is a fine alloy. I’d just mix up all 67 pounds.

[405grain]

You don't need to use that much tin. More than 3% tin is just a waste. It only takes a little bit of tin to improve the mold fill out and the mechanical properties of the alloy. I've had very good results from this alloy: 26 lbs of lead, 3 pounds of "BB" sized chilled shot, 5 lbs of superhard, and 1 lb of tin. This gives me an alloy that's 92.6% PB, 4.46% SB, 2.86% SN, and 0.08% arsenic. Air cooled it is at 13.5 BHN. I haven't tested the quenched hardness, but it is quite hard. It makes very nice looking boolits. For pistol boolits I cut this alloy 50/50 with pure lead.

[lightman]

It looks like your math is ok. Lyman #2 is a great alloy but I would consider 94-3-3 or even 96-2-2 and conserve the tin. Those factory ingots sure are purty! So is that Fall picture!

[ACC]

I bought 100 pounds of RMR lead, and what I did was weigh out 9 pounds of RMR and 1/2 pound of monotype. This gives me a BHN of 13 which is plenty for what I do.