Bushmaster, The CCIs aren't the lowest quality caps; but they just don't fit Treso Nipples worth a hoot.
An alternative to Treso nipples are the new Slix-Shot nipples available from Desperado Cowboy Bullets (http://cowboybullets.com/Products.html
). I've tried a set of slix-shot nipples with #10 and #11 Remingtons, #11 CCIs and RWS 1075s, and all worked flawlessly. Didn't try CCI 10s cause I didn't have any.
Fingers (Show Me MO smoke) McGee - AKA Man of Many Colts - Alter ego of Diabolical Ken; SASS Regulator 28564-L-TG; Rangemaster and stage writer extraordinaire; Frontiersman, Pistoleer, NRA Endowment Life, NMLRA, SAF, CCRKBA, STORM 327, SV115; Charter member, Central Ozarks Western Shooters
Cynic: A blackguard whose faulty vision see things as they are, not as they should be. Ambrose Bierce