I have some copper-plated 7s that I got somewhere at a gun show long ago. I hoard them for .410 reloading; they seem to give me the best patterns in all my .410s (a Western Arms "Long Range," a Win 37 and a Savage 24 (all 3" "magnums) and a Win 20 (2 1/2"). Running low on them, tho. Do they still make these?