.22 cap? There is a ton.. MPW are in MC225 they last about 1000 years. Teflons last 500 years and Russian surplus PIO will last 100 years. Take your pick. :-)
Bumble Bees. Were good, then Mac bought a crappy batch with acidic paper.. Black Beauties 100 years. Ceramics a long long time. WiMa great caps. 2% are hard to beat..
Regards