M1 Garand IMR 4350 H4831?

[Desertbuck]

With these two powders IMR4350 , H4831 with the lyman #311284 what is the warmest I can make the load without worry of harm to the M1 rifle. I know I'm not going to get the best accuracy at a maximum load but just want to know what the safety margin is that's all. I found out yesterday that old powder that I bought H 4831 worked very well. The M1 rifle absolutely love the stuff using bobs load 40gr and the lyman #311284.
My model 1917 also loved the load. But the hunting load I developed long ago for it is a little warmer with 44.1 IMR4350 around 2100fps the old rifle will make cloverleafs at 100 yards with this load.
Can I approach this velocity with the M1 safely with either powder. I'm very curious to see if the M1 will give me a decent group with a load approaching this velocity.
Thanks

[madsenshooter]

Parashooter posted this some time ago on Jouster.com As you can see, he chose to stop at 2000fps, not because the charge had the potential to damage the op rod, but because it's usually about the max speed for 311284. The pressure at the gas port for the standard load with 4895 is 10587psi, so you can at least see, you have some room to go above the charges shown. Someone with quickload may be able to go on up for you.

Cartridge : .30-06 Spring.
Bullet : .308, 214, LYM LRN GC 311284
Cartridge O.A.L. L6: 3.340 inch or 84.84 mm
Barrel Length : 23.0 inch or 584.2 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Muzzle Velocity: 2000 fps or 609 m/s

These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

Powder.type....Filling/Loading.Ratio%..Charge grains....Charge grams...Vel fps..Prop.Burnt %. P.max psi..P.muzzle psi
-------------------------------------------------------------------------------------
Hodgdon.H870.................101.7.....59.6.....3. 86....2000....78.3....25746...10749
Hodgdon.Retumbo...............97.5.....55.6.....3. 60....2000....86.5....25776...10590
Hodgdon.US.869...............102.6.....62.0.....4. 02....2000....75.7....27336...10427
Vihtavuori.20N29.............109.5.....66.8.....4. 33....2000....73.0....27690...10427
Accurate.8700................110.6.....64.2.....4. 16....2000....75.8....28449...10202
Ramshot.Magnum.(Big.Boy)......89.5.....54.1.....3. 50....2000....83.7....25936...10188
Alliant.Reloder-25............89.1.....50.3.....3.26....2000....90 .4....25195...10125
Accurate.MAGPRO...............85.6.....51.6.....3. 35....2000....81.2....25730....9955
Vihtavuori.N560...............84.0.....48.7.....3. 15....2000....83.4....25770....9807
Alliant.Reloder-22............84.3.....48.3.....3.13....2000....86 .8....25662....9734
Hodgdon.50BMG................104.9.....60.4.....3. 91....2000....67.4....28584....9733
Winchester.WXR................86.6.....48.6.....3. 15....2000....86.6....25706....9731
Hodgdon.H1000.................94.4.....53.0.....3. 43....2000....83.9....27301....9725
Vihtavuori.24N41..............99.1.....59.9.....3. 88....2000....71.2....28941....9668
IMR.7828.SSC..................83.5.....48.6.....3. 15....2000....84.1....26445....9633
IMR.7828......................88.2.....48.6.....3. 15....2000....84.1....26445....9633
Vihtavuori.N170...............98.4.....55.2.....3. 58....2000....78.8....27708....9478
Accurate.3100.................91.9.....49.3.....3. 20....2000....92.1....26399....9445
Accurate.4350.................80.8.....43.8.....2. 84....2000....94.2....26166....9271
IMR.4831......................84.1.....45.7.....2. 96....2000....92.4....26415....9212
Ramshot.Hunter................74.6.....45.1.....2. 92....2000....91.5....26408....9205
Alliant.Reloder-19............81.0.....45.9.....2.98....2000....87 .9....26923....9196
Hodgdon.H4831.SC..............84.8.....48.6.....3. 15....2000....84.4....27805....9131
Hodgdon.H4831.................88.2.....48.6.....3. 15....2000....84.4....27805....9131
Winchester.760................72.6.....43.5.....2. 82....2000....90.6....26679....9088
Vihtavuori.N165...............87.8.....49.3.....3. 19....2000....89.4....27400....9084
Hodgdon.H4350.................76.7.....43.2.....2. 80....2000....92.2....26509....9082
Vihtavuori.N550...............74.0.....42.9.....2. 78....2000....94.0....26742....9058
Hodgdon.H414..................69.6.....42.1.....2. 73....2000....92.2....27615....8871
IMR.4350......................81.1.....44.0.....2. 85....2000....87.7....28120....8821
Vihtavuori.N160...............87.3.....47.5.....3. 08....2000....87.4....28656....8774
Ramshot.BigGame...............72.9.....41.4.....2. 68....2000....96.0....27036....8740
Hodgdon.H380..................70.9.....41.1.....2. 66....2000....94.7....28199....8657
Hodgdon.BL-C2.................65.3.....40.4.....2.62....2000. ...97.7....27746....8564
Alliant.Reloder-15............68.7.....38.9.....2.52....2000....96 .1....28115....8505
Accurate.4064.................74.4.....39.4.....2. 56....2000....99.7....28143....8352
IMR.4320......................70.5.....39.4.....2. 55....2000....96.6....28254....8304
Winchester.748................62.9.....38.4.....2. 49....2000....98.6....27893....8274
IMR.4895......................68.9.....37.8.....2. 45....2000....98.1....27535....8274
Accurate.2700.................75.1.....44.0.....2. 85....2000....92.0....30496....8265
Accurate.2520.................67.3.....39.3.....2. 55....2000....99.2....28278....8262
Hodgdon.VARGET................71.3.....39.1.....2. 53....2000....96.4....29234....8212
Vihtavuori.N540...............71.4.....40.9.....2. 65....2000....97.5....29941....8175
Vihtavuori.N150...............76.7.....41.0.....2. 66....2000....99.1....29025....8139
IMR.4064......................71.9.....38.5.....2. 49....2000....96.8....29371....8128
Ramshot.TAC...................64.1.....38.1.....2. 47....2000....98.3....29042....8118
Hodgdon.H4895.................70.8.....38.9.....2. 52....2000....99.0....28751....8036
Accurate.2460.................63.7.....38.7.....2. 51....2000....99.1....29523....8027
Vihtavuori.N530...............64.3.....36.7.....2. 38....2000....98.4....29294....8023
Accurate.2495.................69.6.....37.3.....2. 42....2000...100.0....28635....7992
Accurate.2230.................62.8.....38.2.....2. 47....2000....99.1....29868....7901
IMR.3031......................67.9.....36.0.....2. 33....2000...100.0....28027....7884
Hodgdon.H335..................60.5.....37.4.....2. 43....2000....99.7....29319....7871
Vihtavuori.N140...............70.9.....38.7.....2. 51....2000....99.9....29829....7715
Hodgdon.Benchmark.............65.6.....36.6.....2. 37....2000....99.2....31015....7615
Ramshot.X-Terminator..........60.9.....35.7.....2.32....2000 ....99.9....30099....7595
Hodgdon.H322..................63.9.....35.2.....2. 28....2000...100.0....29692....7583
Vihtavuori.N135...............74.2.....38.1.....2. 47....2000...100.0....29569....7578
Alliant.Reloder-12............64.7.....37.4.....2.42....2000...100 .0....30481....7509
Accurate.2200.................59.9.....34.5.....2. 23....2000....99.7....31301....7404
Accurate.2015.................64.7.....35.5.....2. 30....2000...100.0....31364....7182
Alliant.Reloder-10x...........62.9.....33.6.....2.18....2000...100 .0....31434....7095
Vihtavuori.N133...............70.2.....36.4.....2. 36....2000...100.0....32099....7005

[johnly]

Be very careful using slow powders in a M1 Garand, as you could end up with a bent op rod.
Garand rifles don't have a gas limiting system like M14s. If the port pressure is too high, the action works with excessive gusto and the op rod is the weak link in the system.
I don't think this will be an issue with light cast bullet loads, but if you try for higher velocities trouble awaits no matter if you are using cast or jacketed bullets.

John

[Got-R-Did]

You may find the below link interesting.
http://www.garandgear.com/index.php?option=com_content&view=article&id=106:shooting-commercial-ammunition-in-your-m1-garand&catid=39

Got-R-Did.

[Desertbuck]

Be very careful using slow powders in a M1 Garand, as you could end up with a bent op rod.
Garand rifles don't have a gas limiting system like M14s. If the port pressure is too high, the action works with excessive gusto and the op rod is the weak link in the system.
I don't think this will be an issue with light cast bullet loads, but if you try for higher velocities trouble awaits no matter if you are using cast or jacketed bullets.

John


Yes I know about the M1 with slow powders and j words. But with boolits I have come to understand it a whole different ballgame.

[Desertbuck]

You may find the below link interesting.
http://www.garandgear.com/index.php?option=com_content&view=article&id=106:shooting-commercial-ammunition-in-your-m1-garand&catid=39

Got-R-Did.


Thanks Got-R-Did I've thought about buying that exact gas plug for some time but I always ask myself why? Maybe it's time I just get it and see for myself?

[Blammer]

I have one of the adjustable gas port plugs in my M1, works well, and you can "tune it" to what you are shooting.