Is it just the primers?
For starters, shame on me for going off half cocked. I have not shot my M/L (Lyman Trade Rifle) regularly for 5 years.
Last year, I decided to take it on a hunting trip as a second rifle. As I am packing, I open up a tin of CC #11 Magnum caps and there are 5 in there, the last five from a box of 1000 (lasted me 19 years).
I reach back in the safe and find another tin. It looks different. Says CC #11. I fill up the inline capper and think no more about it. At camp, I shot a couple of shots checking my sights. The trip ends, I clean my gun, put things away.
This year, I take my M/L to deer camp and this time, every time I try to shoot, I get a nice pop, and no boom.
If course, I clean the gun, check the cleanout screw, check nipple, do everything I think I think is necessary. After a couple of days of this, my capper is empty, and I reach into my possibles bag and pull out that tin of CC #11 caps, and it dawns on me, maybe I am staring at the problem.
What say you?