As to reliability and function;
A couple of years ago, Hal Hare commented that his CSMC 21 had done well for 40,000 rds, having gone back once to have the trigger pulls increased. I imagine it's well over 50K now if it's still going.
For my 1926 Fox 12ga, I've documented 38,400 rounds since Jan, '08. That includes ~2,000 each of Win Xtralites and Rem 1 ounce Nitro27's. I had two trigger malfunctions in the first 8,000 rounds due to Red Dot powder residue in the action. The design allows dirt to enter the action through the watertable. The toplever has migrated about .060" toward center (still right). It still grabs a 0.0015" feeler gauge and won't let go. Showing some wear on the case colors and triggerguard now.
My 1932 Fox 16ga has digested 32,600 rounds in 9 years, including over 15,000 factories. Toplever approaching center now, no other issues.
Altogether, >80K rounds thru 5 Foxes with one broken hammer toe.
