7.62NATO, I've had one of those Lehigh/Knight range rods for the last couple of years and ordered a second one yesterday so as to have one for swabbing and one with the load indicator set for the load I'm shooting. Over the years I've used a bunch of different rods. Believe me, there are none better.

I know it's difficult to imagine the difference between using a good range rod and the gun's rod. But if you could borrow one of those range rods to load and clean for a shooting session you would be ordering one as soon as you returned home.