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Operating rod beginning to bend

1109 Views 9 Replies 4 Participants Last post by  PhillipM
I've been shooting some of the "Greek" ammunition from CMP in my Garand. This is almost hot ammo. It chronographs at well over 2800, closer to 2900. All other loads I've been shooting have been between 45.5 and 47.0 grains of IMR 4895 using 168 grain bullets. Anybody have any idea what's going on with my operating rod or is it normal for it to have a slight bend to it? If you lay it on a flat board, the bend starts about 1/2' from the gas plug end and increases for about 4" to a height of about 3/16" off the board and then goes back to a straight rod after about 4 more inches. I have not noticed this slight bend before until after I shot about 70 to 80 rounds of the Greek ammo from CMP.
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To determine if your op rod is bent out of specification, perform the tilt test. I've never seen a reason to do more than tilt test 1 & 2. 3 & 4 seem a little overboard, but can't hurt. There is a gauge that armorers can straighten an oprod with but it costs as much as a truck load of new oprods.

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