Safe M1 Garand load with IMR4350?

DENWA

February 18, 2008 12:24

I bought 500 pcs of primed brass and the 150gr FMJBT to go with them.


I wasn't thinking but I bought IMR4350 and H4350 because that is what I always use in my 30-06 bolt gun.

Most people are saying 4350 is too slow and will bend the OP-Rod.

Anyone have a good safe load?

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  nononsense

  February 18, 2008 13:20

  DENWA,
  
  It is the opinion of most reputable M1 Garand reloaders that any powder slower than 4320 will cause damage to the Op Rod and possibly to the action due to high port pressures. Please read this thread from a couple of years ago:
  
  http://forums.gunbroker.com/topic.asp?TOPIC_ID=162148
  
  My suggestion is to go buy some more powder.
  
  Best.

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  jonk

  February 18, 2008 13:38

  Brownells also sells a gas plug with adjustable venturi to allow just enough pressure to operate the action. This would allow you to use slower powders if you really want to.
  
  I would SUSPECT that a safe load could be developed as is, but without a way to measure port pressure I'd not want to offer unsubstantiated guesses. Even if you did have a load that produced safe port pressure, it would be a light load for that powder and probably not as ballistically efficent or accurate as the 4895 load.

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  DENWA

  February 18, 2008 14:54

  Thanks guys,
  
  great post and good info.
  
  I just really wanted to keep the same powder for both bolt and gas guns.
  
  crap!

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  bpost

  February 18, 2008 15:10

  quote:Originally posted by DENWA
  Thanks guys,
  
  great post and good info.
  
  I just really wanted to keep the same powder for both bolt and gas guns.
  
  crap!
  
  
  Try some IMR485, both may like it real well. Good luck!

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  ww2buff9067

  February 19, 2008 14:06

  I shoot 45 grains of IMR 4064, no worries at all.
  
  Mike

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  DENWA

  February 20, 2008 02:06

  WW2buf,
  
  do you use this powder in both M1 and bolt guns?
  
  
  I guess I'm gonna have to use the 4064 too. I just hate to have to segregate 30-06 for bolts and gas.
  
  I've got IMR4064 for the 308.
  
  Time to start looking for the best dual purpose load that is super accurate in bolt gun(priority) and functions the M1 accurately too.
  
  thanks

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  Pinhead

  February 20, 2008 05:47

  Not to go into a long winded discussion but I would dicourage the use of 4350 powder(either IMR or H) because of the slower burning aspects. I have always used IMR4895 for my Garands. It is ideal for the Garand. Contact me if you need a starting load. James

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  ww2buff9067

  February 25, 2008 16:36

  DENWA, sorry for the late reply. I'll use this load in bolt rifles as well. I have used WIN748 in the bolt rifles as well, but find that the Winchester powders have a tendency to be a lot more sooty than the IMR powders.
  
  Hope this helps, and happy shooting.
  
  Mike

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