[quote=Hammergun]
I have a similar problem on an 1885 Winchester target rifle that is equally vexing. It has a titanium, short-fall hammer that uses both coil and flat springs. After years of flawless service, it is suddenly giving me sporadic light strikes. Cleaning did not help. Protrusion is fine. But something is amiss.
For all ammo or just a specific brand?
Home-brew, black-powder ammo in .45-70 starling cases with CCI-BR2s. I've been using that brass and primer for about 15 yrs now. Hundreds of shots per year. Why now?
If newer primers, CCI may have changed something in the production process.
A much less likely reason is something that happened to my hammergun last weekend. The round tab on the leaf spring broke off and the leaf spring was moving back and forth when the trigger was pulled, sometimes it fired and sometimes it didn't and I got light hits on the Federal ammo I was using. I finished a sporting clay match by switching from Federal ammo to Cheddite ammo.
