A guess,
weather has changed a bit this year. Sometimes the wood in the stock will expand/contract so as to rub the parts.
Are you skilled enough to remove the stock and evaluate it for rub marks? Also, while the stock is off, check for proper lubrication and clean the sear areas.
Mike
p.s. and Yes the reloads could induce some issues, try the gun with some light factory ammo and see if the problems still happen.
p.s.s. also really clean the chambers and forcing cones.
Mike, I don't feel comfortable taking a stock off. If nothing else the screws would never be the same. I don't have the tools or the knowledge. My main problem with a few Spanish guns has always been related to primers. I have found that if I use Fiocchi they work flawlessly but with Winchesters they are often difficult to open after firing. I'm not sure if that is due to Winchesters being softer, non-rebounding hammers, or both but until today primer issues were all I've had to deal with. The previous times I have used this gun it has been with Fiocchi primers but today I used shells with Winchester primers. Probably irrelevant but just wanting to mention any differences since it always functioned correctly prior to today.
