The long op rod on the M1, an apparent holdover from its original gas trap design, can be damaged by too high a port pressure. The seventh edition of the Hornaday reloading manual has an M1 specific section that lists only mid range powders such as 4895, 4064, RL 15 and Varget. The m1 bullet was 172-3 and was replaced by the m2 150 gr bullet for weight savings on the soldier and shipping however the m1 was still retained for belted machine guns and sniper use as it did in fact fly farther for the machine guns and shoot better for snipers. Nm 06 Ammo was always loaded with 172/3 grain bullets and is fine for the garand. .30-06 M1 Garand Loads: Warning! Notes: All loads use CCI BR-210 primers, with single exception noted.Overall length of all loads is 3.34 inches. Warning: Powders such as IMR-4350, IMR-4831, H-4831 and others with similar burning rates, cause short cyclings, increased recoil, erratic port pressure and accelerated wear in an M1. Military ammunition for the Garand was loaded with bullets in the 150- to 172-grain range at mild.308 Winchester velocities, and most commercial.30-06 ammunition is too warm for safe M1 pressures. There are three ways to solve the problem: Shoot military ammunition, handload appropriate ammunition or install a gas-port plug with a smaller. 46 grs IMR 4064 with the 168 gr bullets is a popular accurate load for the M1 Garand. You don't want to push the pressure too high with these old war horses. They were designed to operate at about standard starting loads to mid loads that we have listed in the manuals these days.
1. First check to be sure that the safety is off.
2. V/ith the right forefinger pu'l the operating rod sharp y and hold it in rear position. This will eject cartridge that was in the firing chamber. With the of the hand grasp the trigger guard or the grip . Hold the stock against the right hip to support it. place the left hand over the receiver and with the thumb release the clip latch.
3. The clip and whatever cartridges remain in it now pop up into the right hand and must oe re-
from the rifle.
4. With the right side of the right hand held against _ operating rod handle, force the operating rod slightly to the rear. With the right thumb now push down the magazine follower and permit the bolt to move forward about an inch over the end of the follower.
5. Remove the thumb smartly from the follower and let go of the operating rod handle. The action wi'l close under the tension of the spring. Now press the trigger.
6. If you wish to unload the firing chamber but leave the magazine loaded, pull the operating rod oack as described aoove to eject the cartridge from the firing chamber; then pull the operating rod handle back past its normal rear position, force the clip down, ease the rod far enough to let the bolt handle ride over the top of the clip, then let operating rod go forward.
Continue reading here: Field Stripping
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