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Posted: 5/16/2015 6:37:45 PM EDT
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Hornady 8th edition shows H-4895 in the specific M1 Garand data section for use with 150-155 grain bullets.
Does anyone have IMR-4895 data for the M1 Garand using 150-155 grain bullets? Thanks Motor |
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Read here...although some are using 49 grains and that seems a bit hot.
http://forums.thecmp.org/showthread.php?t=65824 The IMR data is online at their website too. http://www.imrpowder.com/ |
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I have muzzle velocity versus powder charge weight data (chronograph data) H4895 and IMR4895 data using the CCI#34 primer (mil-spec) but it is for the Mil-Spec 168 gr bullet (from Widener's).
I have some 147 gr data, too, but it's on another computer I don't have access to right now. So, basically, I got nothin' for ya. 
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http://masterpostemple.bravepages.com/M1load.htm Recommended .30 caliber M1 loadings from the NRA 147 - 155 grain FMJ or HPBT bullets IMR 3031 - 48.0 grains IMR 4895 - 49.0 grains IMR 4064 - 50.0 grains W748 - 48.0 grains AA2460 - 49.0 grains AA2520 - 51.0 grains AA2495 - 50.5 grains H4895 - 49.0 grains BLC-2 - 49.0 grains H335 - 49.0 grains RL-12 - 48.0 grains These loads only duplicate military spec. velocities for the given bullet weight, using commercial cases and powders. If you are using military cases, drop all charges by 2 grains |
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They can take hotter loads (not that I would do it) but you must remove the gas cylinder plug which will render the gun as manual loading only. Vince Quoted:
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Don't load hot for these old guns, they aren't making anymore. They will break! They can take hotter loads (not that I would do it) but you must remove the gas cylinder plug which will render the gun as manual loading only. Vince get the Shuster gas plug, you can even shoot commercial ammo with it............ |
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get the Schuster gas plug, you can even shoot commercial ammo with it............ Quoted:
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Don't load hot for these old guns, they aren't making anymore. They will break! They can take hotter loads (not that I would do it) but you must remove the gas cylinder plug which will render the gun as manual loading only. Vince get the Schuster gas plug, you can even shoot commercial ammo with it............ Schuster high volume gas plug |
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Schuster high volume gas plug Quoted:
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Don't load hot for these old guns, they aren't making anymore. They will break! They can take hotter loads (not that I would do it) but you must remove the gas cylinder plug which will render the gun as manual loading only. Vince get the Schuster gas plug, you can even shoot commercial ammo with it............ Schuster high volume gas plug How does it work exactly? Is it manual or automatically adjustable? Reason I ask, if it's manual, could you by chance adjust it to overgas with "commercial ammo" by setting it incorrectly? (not that any respectable person reading this forum would use that) That is one reason I never wanted to play with it... Not that I really have an urge anyway... |
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Derek45, Thanks. I know H-4895 and IMR-4895 are pretty close but I never and nobody else should assume anything when it comes to hand loading. Thanks for the information. Now I have a reference to work off of. I'll start at around 46 and work up. Motor Just leave it around 46.0 grains and you'll be fine. No need to work up. When I first started shooting high-power and DCM (Director of Civilian Marksmanship) the old timers that mentored me said 46.0 grains worked with 150's, 168's and was a maximum powder charge when loading 173 grain military match fmj's. That was considered a standard M1 Garand match load in the early 1980's. Hornady's 155 grain bullet data shows these powders listed at a maximum around 46.0 grains of H4895/IMR-4895 but that is more a function of the gas system than of chamber pressure. I always suggest people try 45.0, 45.5 and 46.0 grains of either 4895 when loading 168 grain bullets. This will almost always produce a good load if your Garand is capable of it. |
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Hornady 8th edition shows H-4895 in the specific M1 Garand data section for use with 150-155 grain bullets. Does anyone have IMR-4895 data for the M1 Garand using 150-155 grain bullets? Thanks Motor Generally max is going to be 1 grain higher with IMR instead of H. Since H4895 is slightly faster than the IMR version it is safe to substitute IMR-4895 for H, but not the other way. |
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