7.62x39 which powder for cast
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CoalCrackerAl
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This is the closet i have with my PDF book. I'll check my hard copy's later.
Thank you. That's data for all powders if I go to a 130.
I tried researching and found a lot of garbled info.
I remember someone on here a few years ago. But I think it was mainly CFE black.
I loaded 4227 with XTPs in my SKS with good results. But I lost my notes in the move to MO.
Docendo Discimus
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Docendo Discimus
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The heaviest they list is 160gr. Hope this helps.
CoalCrackerAl
Member
Here is the data upright.
CoalCrackerAl
Member
This post got me in the mood. To take my RAR 7.62x39 out to the range. 
FROGO207
Member
That's a pretty heavy/long bullet for the X39. I wonder how the accuracy will be. Usually there is little to no data because things produced poor results when tried.
AJC1
Member
My first inclination was rx 7 before I read your list, an imr4198 is very close and what I would try. 4227 would be second try but my inclination is you will need a slower powder for gas. With heavy for caliber bullets you may get them to shoot but function issues. I'm following to see what works....
It's a single shot and Norma 201 is supposed to be rx7.
AJC1
Member
I don't have experience with 201 and how it acts up or downloaded. It may work I just haven't used it. That's my limitation, but it does color what I suggest. The book loads will give you a good idea but downloading and checking with grt would be my next step before loading. The range on the fast rifle will be wider than the magnum pistol.
CoalCrackerAl
Member
My RAR in 762x39 with Berry's plated 123 grain is a tack driver with 9 grains of unique.Had it today at the long distance range. I had a great time ringing steel.
AJC1
Member
A ladder from 15-19 grains of 4198 seems a reasonable test.
I might start with that. My 4198 is the oldest powder next to the sr4759.
I also have 250 grain powder coated cast bullets.
That really helps. I get a better idea when there is pressure data. My chronograph won't turn on. So I'm running even more blind than normal.
CoalCrackerAl
Member
My RAR is 1 in 9.5. Im thinking about trying some Speer .311 150 grain in it.
I ran cast 250s from 950 to 1900 in my 308 and it was a 10 twist. I'm not worried enough about the twist rate to check it. I'm planning on getting 165s above 1600 if accuracy is there.
The data for cast bullets in x39 revolves around sks/AKs. So they are trying to match factory port pressure and cycling.
I'm bit limited by either. I did find some 95 gr .313 WFN in my case of bullets. I might try them over 2400.
I loaded some MBC 165 .311 over 16 gr 4198 to try tomorrow if work goes well.
Swampman
Old Fart
2400 works great out of an SKS with checked and coated Lee 160 grain 2R.
I almost bought that mold. But I want a flat point for hunting.
Swampman
Old Fart
From your previous posts I'm guessing that you probably know this already, but use as soft an alloy as you can get away with (assuming workable accuracy).
If you feel the need to push them faster with slightly harder alloy, this is an awesome hollowpoint mold.
https://www.mp-molds.com/product/mp-308-hunting-hp-gc/
They're out of stock at the moment, but the weak Euro makes them a very good buy if you can wait till they're back in stock.
If you feel the need to push them faster with slightly harder alloy, this is an awesome hollowpoint mold.
https://www.mp-molds.com/product/mp-308-hunting-hp-gc/
They're out of stock at the moment, but the weak Euro makes them a very good buy if you can wait till they're back in stock.
That looks like a great mold. My plan is straight wheel weights at whatever velocity works. I had been on the hunt for a rifle in this chambering because it's velocity matches lead very well.
CoalCrackerAl
Member
I loaded 5 rounds with 16 grains of 2400 2.200 OAL. 150 grain Speer bullets. Next cool down weather wise we get im going to see how they group.
CoalCrackerAl
Member
Oh the 2400 data came from an old Hodgkin manual. #26 I find it to have a lot of data not found in newer books. It has all powders in it.
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