7.62x39 Experiments

[Titleiiredneck]

Give me a powder type and I can run some #'s on quickload

[ToxicSports]

Titleiiredneck,

Thanks for the help!! Well, to be honest, the only two slow powders I have any knowledge about, and have, are Hodgdon Varget and IMR-4064. I use them for my 30-06 and they are more than likely WAY to slow.

There are a lot of powders on the burn rate charts between my 1680 and 4064 so I was wondering....what if?

I'm guessing that a lot of unburnt powder, not to impressive velocities, etc...

If possible could you run 2 powders?

1) Varget since it is the slowest I have

and

2) Hodgdon Benchmark since it's pretty much in the middle of my 1680 and 4064.

However, if you or any other member who may have a better suggestion than these two powders please feel free to substitute and suggest it.

Thanks again!

Scott

[Titleiiredneck]

I ran some number and it looks like 10x is a tad better, I will post the numbers shortly.

[Titleiiredneck]

I just ran benchmark and varget, all bullets are sierra matchkings and I take NO responsibility if you or someone else, hurts themself in any way or anyone else.

All these numbers are from quickload using 7.62 x 39 (.308) Russ. and groove caliber of 0.308 and a barrel leangth of 20.0, enjoy!

Hodgdon Benchmark

.308, 150, Sierra HPBT MatchK 2190
25.0 gr
2004 fps
36563 psi

.308, 168, Sierra HPBT MatchK 2200
23.0 gr
1865 fps
36356 psi

.308, 200, Sierra HP MatchK 2230
20.0 gr
1653fps
3620 psi

308, 210, Sierra HP MatchK 9240-2235
18.0 gr
1533 fps
33286 psi

.308, 220, Sierra HP MatchK 2240
17.0 gr
1428 fps
28351 psi


Hodgdon VARGET

.308, 220, Sierra HP MatchK 2240
20.0 gr
1554 fps
3518 psi


308, 210, Sierra HP MatchK 9240-2235
20.5 gr
1623 fps
3552 psi


.308, 200, Sierra HP MatchK 2230
22.0 gr
1690 fps
3859 psi


.308, 168, Sierra HPBT MatchK 2200
24.0 gr
1804 fps
4049 psi


.308, 150, Sierra HPBT MatchK 2190
27.0 gr
2008 fps
4523 psi

[ToxicSports]

Thank you sir! As I suspected the velocities were not too impressive with the low volume of the powder but it was something that made me wonder "what if"?


Thanks again!!

Scott

[ToxicSports]

OK gang,

I just velocity tested a few 210 VLD-H subsonic loads.

9.8gr of aa5744 flew at an average of velocity of 888fps for 5 shots. I'll get them on paper and shoot off sandbags ASAP to check stability and accuracy.

I just wish 5744 wouldn't leave as much unburnt powder as it does.

Scott

[Titleiiredneck]

Try aa#9 works great for me.