I was finally forced to admit today that my S&W 686's issues may not be the ammo. It's sort of like my Sig - I can't imagine it would have any problems.

Ok, I had it on the range today and it was accurate as usual. But at least one round in the cylinder each time wouldn't fire. I took the unfired rounds and inspected the primers. Instead of the nice dent on some of the primers, these all had one little pock mark instead. So I loaded them back into the revolver and decided to tempt fate. They all fired off without any issue, and this time around I fired them all single action just for good measure.

So a few theories were pushed my direction from my co-workers and a few customers.

1. The ammo had primers that were too hard. Which may be true, but this has been going on for a while now and it has been three different kinds of ammo. However, the gun is flawless with .38s. I normally put .357s through it. Not sure if that matters.

2. A screw was loose which resulted in light strikes. I let a customer I know pretty well take off the grips and tighten the trigger pull up on it. We didn't test fire it because I was out of ammo, but I'll test fire it next week. I have a few .38s, but I want to try .357s because those are where the problem is.

Do you have any other ideas of what it may be? If this doesn't work out with the screw tightening, I'm going to try a few more types of ammo. If it is still acting up I'll probably take it to the gunsmith. But I'm open to any other ideas if you may have them.