Metal mag lubing

VinceMarksman

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What do you lube your metal mag with? The top edge of the mag is scratching my lapua cases big time. Would regular 3 in 1 oil do the trick?
 
No lube on mags. Just remove the burr on the metal.

If you transfer lubricant onto the cartridges you could risk a failure to extract situation or worst case an overpressure situation in the chamber.
 
In the Army we used to take spring out clean, oil then dry clean a thin layer of gun oil stays on the mag but not enough that it will transfer onto anything
 
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