Thread: RCBS F/L die

If you've got a couple of FLS dies and you seemingly haven't it's dead easy to do rough measurements with your vernier calipers into the mouth of the die and then compare between dies. Also compare with the base area of your brass you are sizing to see how much you are trying to reduce.

Slide just the tips of the calipers into the die to take the reading. Pushing them fully in will obviously incorrectly measure further down (up?) the taper.

You've given them a good clean and say all good. I presume that means no rust?

And I guess I have to ask you what lube you are using.