Cast bullet question

[madsenshooter]

The copper really wasn't my idea, Whelen and Hudson were playing with a very high copper alloy. Ideal once sold the alloy, 80Pb, 10Sn, 7Sb, 3Cu. It was called Ideal #1, or as Whelen referred to it, Ideal Bullet Metal, in his 1909 Suggestions to Military Rifleman. I must've found the Ideal #1 in an old catalog. I'm not close to that Cu percentage.

[Hamish]

The 311365s that Paul is talking about are cast of a very hard yet malleable, alloy. Though he's shooting them slower, I've found they're easily good for 2000fps. Honestly, I think I've had them up around 2300-2400fps using a case full of slow burning powder. I didn't get a good idea of accuracy at that velocity level, my sights were set for 2000fps and the much faster ones hit over the target. There was no alloy blowing back on the case neck, a sure indicator of too much pressure for the alloy. I'll get back to experimenting with them one of these days. First I need another batch of that alloy! Rich, this is the copper enriched stuff that you read about on castboolits. I sorta made the discovery, and badgered ran with it.

LOVE copper enriched,,,,,,,amazingly tough stuff. Bob, it's been long enough that I've forgotten the powder you were testing. 7383?

Next week after our firearm deer season is over I had it in mind to re peruse the 10B101 data to see what would apply to 165 and 195 grain cast loadings in the 30-40.

[madsenshooter]

I'm still working with that stuff, but the really fast 311365 loads with the high speed alloy was a case full of WC860 with a bit of boost. The 7383 is doing great in the K31 with 168gr Sierra Tipped Matchkings.

[Culpeper]

Copper enriched? Is that like a kind of babbitt alloy?

[Hamish]

Copper enriched? Is that like a kind of babbitt alloy?

Easiest way is adding number 11 Babbitt alloy to your lead alloy to get to 2-3% tin and antimony, and .1 to .2% copper. It doesn't take much copper to get the benefits. VERY tough alloy. As I remember (it's been awhile since I smelted a batch), I believe I added one (approx. 2lb.) ingot to 48lb.s of 50/50 wheel weights and range scrap.

https://www.rotometals.com/babbitt-bearing-alloys/

One thing to note is that when casting using copper enriched, your pot temp will have to a bit higher to get good fill out.

[madsenshooter]

It is basically a babbitt, however you have to be careful not to get too much antimony. It is too brittle with too much antimony, the bands shatter and blow back on the caseneck with only 30,000-35,000PSI. Rich, you'd be pretty safe using 2400 data with the 10B101.

[Todd Doyka]

Guys

I was reading Cast bullets in the .30-40 Krag by Glen E. Fryxell was wondering if any of you have experience with the bullets he wrote about in the piece.

It looks interesting. It might be something I should try at some point.

http://www.lasc.us/FryxellCB30-40krag.htm

i use a 165gr ranch dog(173 gr actually) in my krag. it is going roughly 1800fps and it will go approx 1 1/4 - 2" at 100 yards(5 shots/benched). i find it quite convincing on deer, meaning they go drt!!!

sometime i have to try a 165gr rd with 2400 but h4198 is my go to powder.

[psteinmayer]

I'm pushing those 311365s at around 1500 with the 19 grains of AA5744. Really lobbing them in at 200, but the accuracy is pretty amazing!

[Hamish]

If you tell me they're plain base, you'll make my day. I've had a 5C 311365PB sitting beside my chair next to my coffee cup for some time now,,,,,,,,,

[madsenshooter]

No, they're not plain base, gas checked. But, your PBs might work well with Paul's load, or 15-16gr of your hard to weigh 10B101.