Thread: 7mm-08 reloads extraction issue - thoughts please

Originally Posted by Jhon

Well I spoke too soon. After another couple of excursions and more range time we still get sporadic occurrences. Dealer says it's a brass re-sizing issue. But I don't accept that a round that chambers freely has a resizing issue. And once fired it is fire formed to the chamber. To me it's simply an extraction issue that appears at a particular pressure threshold. So back to reducing the load further. Maybe even a different powder with a different pressure curve.

Somehow I doubt Ruger, or their local importer, is going to care too much.

Have you tried checking the headspace via the masking tape method I described?

Reason I said to take the firing pin out, I said use a factory round (live) as they are usually very under-sized. A single layer of masking tape is close enough to approximate a No-Go gauge (some gunsmiths use this method to check headspace to avoid ordering gauges).

Aside from a chamber cast, this is the easiest way to tell, otherwise you will be going in circles.