I recently got a Lee Breech Lock press as you may know. Today I set up to de-prime 300+ 45 ACP brass. It soon became apparent that the primers were collecting at the bottom of the chute from the ram, and were bridging across the hole to the dump tube. Hmm says I, what to do? I put a 1/2" drill bit (a long one) in my drill and slightly champhered the top of the hole. Voila! That little trick did the job. The Challenger press and the Breech Lock press are virtually the same as far as parts, except the BL press has a 1-18" ram.