Was just out at the range with my sks and my handload was not functioning in the rifle, but it would fire it would not push back the gas piston to eject the round. I had some factory ammo that functioned fine so it must be my load. I am using 123 grain soft point .310 bullets and 23 grains of IMR 4198. Does any reload 7.62x39mm with 4198 if so i would appreciate some guidence. Thanks!
7.62x39 load recipe with IMR 4198
- Thread starter mookiie
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dprice3844444
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http://www.reloadersnest.com/query_pw.asp?CaliberID=66&Powder=Hodgdon H4198
Load 5742 in caliber 7.62x39 Russian
LoadID
5742
Bullet
Speer SP
BulletWeight
125 grs
PowderHodgdon H4198
PowderWeight
26.5 grs
Primer
CCI 200
Brass Make
Midway
Barrel Length
24 (inches)
C.O.L
2.15 (inches)
Velocity
2378 fps
Group
(inches by 3 shot at 100 yds)
Submitted Date
1/27/2003 10:10:00 PM
Submitted By
Gun Info
Comment
Energy
1566 ft-lbs
TKO
13.08
OGW
315 lbs
IPSC PF
297.25
Load 5742 in caliber 7.62x39 Russian
LoadID
5742
Bullet
Speer SP
BulletWeight
125 grs
PowderHodgdon H4198
PowderWeight
26.5 grs
Primer
CCI 200
Brass Make
Midway
Barrel Length
24 (inches)
C.O.L
2.15 (inches)
Velocity
2378 fps
Group
(inches by 3 shot at 100 yds)
Submitted Date
1/27/2003 10:10:00 PM
Submitted By
Gun Info
Comment
Energy
1566 ft-lbs
TKO
13.08
OGW
315 lbs
IPSC PF
297.25
rcmodel
Member in memoriam
Loading too light I would guess.
Hodgdon says:
125 grain Speer.
IMR-4198 = 24.0 grains.
Lyman #49 says:
123 Hornady.
IMR-4198 = 24.6 MAX.
You are shooting a lighter bullet with less powder, so?
rc
Hodgdon says:
125 grain Speer.
IMR-4198 = 24.0 grains.
Lyman #49 says:
123 Hornady.
IMR-4198 = 24.6 MAX.
You are shooting a lighter bullet with less powder, so?
rc
Rc,
I confirmed the bullets were 123 grn. I also confirmed that 22.8 grains of powder was used in each round. My load books are giving maximum amount of 4198 at 24.8 grns. Not sure if the problem is not enough powder or to much. The rounds were not ejecting but I am not sure if it was because they were to high pressure and so stovepiped or if they were to little powder and so did nt ave enough gas to make the pistons function.
I confirmed the bullets were 123 grn. I also confirmed that 22.8 grains of powder was used in each round. My load books are giving maximum amount of 4198 at 24.8 grns. Not sure if the problem is not enough powder or to much. The rounds were not ejecting but I am not sure if it was because they were to high pressure and so stovepiped or if they were to little powder and so did nt ave enough gas to make the pistons function.
rcmodel
Member in memoriam
Stovepiping = Not loaded hot enough to work the gas system.
Bump it up.
If they were already too hot it would be flinging brass into the next time zone.
rc
Bump it up.
If they were already too hot it would be flinging brass into the next time zone.
rc
rbernie
Contributing Member
In the FWIW category; I use H4198 exclusively with the light 123gr-125gr class of bullets in 7.62x39, and my standard hunting load (good brass life, no adverse pressure signs) is well over your current load.
rc
I had a Garand that I had to get rebarreled because with any ammo, factory or otherwise would not eject the shell because the pressure caused the case to expand and cling to the walls of the barrel, even thought the action worked fine it actually bent the rim of the cases. I thought this was "stovepiping" would that be refereed to as something else?
Thanks!
I had a Garand that I had to get rebarreled because with any ammo, factory or otherwise would not eject the shell because the pressure caused the case to expand and cling to the walls of the barrel, even thought the action worked fine it actually bent the rim of the cases. I thought this was "stovepiping" would that be refereed to as something else?
Thanks!
rcmodel
Member in memoriam
You said
So, there is nothing wrong with the rifle, or chamber.
Your Garand had a rusty or pitted chamber if the extractor was tearing rims off and leaving cases stuck in the chamber.
Polishing the chamber would have probably fixed it.
Stovepiping refers to an empty case failing to eject after it is extracted (not fail to extract) and get caught standing vertically by the bolt closing on the receiver.
It is almost always due to light loads, or a broken ejector.
Since yours works fine with factory loads, you don't have a broken ejector.
You have light loads.
rc
So, there is nothing wrong with the rifle, or chamber.
Your Garand had a rusty or pitted chamber if the extractor was tearing rims off and leaving cases stuck in the chamber.
Polishing the chamber would have probably fixed it.
Stovepiping refers to an empty case failing to eject after it is extracted (not fail to extract) and get caught standing vertically by the bolt closing on the receiver.
It is almost always due to light loads, or a broken ejector.
Since yours works fine with factory loads, you don't have a broken ejector.
You have light loads.
rc
Thanks RC I am going to load 10 to 20 round sets starting with 24 grains and just increase the grains by one for each set until I find the sweet spot. Thanks for all the info!
+1 RC to just about every post I have ever read from you
+1 RC to just about every post I have ever read from you
rbernie
Contributing Member
I can find Hodgdon powder most places, more easily than I can find IMR. I also bought into the notion of Hodgdon powders being less temperature sensitive some time back, and that just pretty much set the stage for my preference.
Marlin 45 carbine
Member
not a big chore to convert the sks to straight pull bolt action so don't despair you can still shoot them ok.
I would not break them down IMO
I would not break them down IMO
Warners
Member
Good luck with the surgery! My wife had that done about 2 years ago. She never had surgery before that and was scared to death. Afterwards, she said it was the BEST thing that ever happened to her. Her recovery was remarkably fast (She's tiny and light, which helps a lot). She was back to teaching water aerobics classes in a couple of months. Back pain sucks!
Good luck!
Warner
PS - I apologize for the completely off topic reply!
Warner - No need for an apology. Thanks so much for the response, to tell you the truth I am kind of freaked out myself. I have had a minor surgery in the past but it is still an unnerving prospect. Thanks again for the reply!
tkcomer
Member
Are you looking at Hornady data? They seem to be a little on the light side. Sierra lists a little over 25grs for IMR 4198. Heck, I use 1680 in my gun and it's over max with the Hornady data, but under max for the Sierra data. If you look at Speer data, it's almost scary how much their max is for the 7.62x39.
tkcomer - Thanks for the info. You are correct I was basing my data on the Hornady manual. I also cross referenced with the Lyman manual, but I was trying to start with a light load, I guess I went to light. I am going to try a bit more powder and will take a look at sierra data, do you know if it is available on the web or do I need to order the book?
Thanks!
Thanks!
tkcomer
Member
This is what Sierra gives for their .311 125gr SPT bullet for IMR 4198: Minimum is 23.1grs of powder. Maximum is 26.1grs. That seems like a lot when you look at the data for their .308 125grn bullet. 23.5grn minimum and 25.5gran maximum. And they are using Winchester brass. Speer, on the other hand, lists 24grs minimum and 26grs maximum for IMR 4198 with their .311 grn bullets. I load for an AR and wouldn't even use the max Speer data. Might be OK for a bolt gun, but those loads seem like they would be really hard on brass, much less the gun. These loads are out of the Complete Reloading Manual for the 7.62x39.
rcmodel
Member in memoriam
I hate to get in your business.
But it is not advisable to load 100 or 200 (or 300 like you did the first time) of anything until you find out if it works by loading 10 - 15 test loads first.
rc
But it is not advisable to load 100 or 200 (or 300 like you did the first time) of anything until you find out if it works by loading 10 - 15 test loads first.
rc
Rc - scroll up surgery on the 25th if I don't shoot it this weekend it will be waiting for 4 - 6 months and I will have plenty of time to unload and reload the shells. I am just looking for a load that gets it functioning not for accuracy at this point, I got one shot at this point.
I loaded 50 rounds with 24.5 grains of IMR 4198 with a 123 gn bullet. Unfortunately I wasn't able to get out to the range to test functioning of the rifle (but my spinal fusion surgery went pretty well), but that means I will not be able to test fire the rounds for a few months. Thanks everyone for your help! I will update you guys on how they run once I get up and on my feet again! I am also planning to get 50 rounds with 25 grains to see which will function better, hopefully I will be able to load them up as soon as I heal up!
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