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Looks like it's fixed Per a suggestion on another forum, I put the firing pin in a drill chuck, just as if it were a drill bit, and held sandpaper against it while running the drill. It only took a few minutes to get enough metal off that the firing pin now does its job, without getting...

update Got new firing pin return springs for both guns, and a new firing pin for the 610, from S&W. Took a while, but it was free, so I can't complain. I can complain about one thing, however. The new firing pin is out of spec. It's difficult to get an accurate measurement due to the...

Can't say whether that chip was always there. I never had ignition problems before, so never had cause to inspect the firing pin. What's really odd is that it seems both of my revolvers have lost their firing pin return spring. I know for sure I never removed the firing pin on my 625 until...

Okay this is just weird. Same spring is missing entirely on my 625 also. I took a good, long look in the firing pin channel, with a flashlight. No broken spring pieces, no nothing. So I guess I somehow lost that one too? This doesn't make sense. When I removed the pin that holds the...

New firing pin but... Things got a little weird. I called S&W and they sent a new firing pin. Here it is beside the old one. You can clearly see that the old one (left) is chipped: I installed the new one and went to the range a few days later. On the first shot, the firing pin got stuck...

Interesting. For me the main limitation is my skill as a shooter - I've been unable to demonstrate any significant difference in accuracy when shooting .40 S&W vs. 10mm. Maybe if I had a Ransom rest, I could do some real tests with the 610. I wonder whether anyone's ever done that? It...

S&W customer service shines again Last night, I opened the gun's side panel and removed and inspected the firing pin. It was pitted on the end, not quite the nice hemispherical shape that's normal and desirable. Apparently there were some pierced primers over the years, although I can't...

Revolver guy wasn't at the shoot, but I got some results and had a different gunsmith look at the gun. Full write-up later, but so far it looks like there was some gunk in the firing pin channel, and the firing pin needs to be replaced.

One of the regulars at our Saturday shoots is kind of an expert on revolvers, so I'll ask his opinion tomorrow. Planning to bring the gun and try some of the ammo I bought last night.

Funny thing about that...my moonclips are all Ranch brand, except for the ones that S&W supplied with the gun. Although, for all I know, S&W was using them as a supplier.

I did say. It's in my original post. Other than that...yes. Headspace in a revolver is defined such that autorim thickness variations would have no effect. Headspace is a blind alley. The relationship between the firing pin and primer is a lot more likely to have something to do with the...

New ammo So I stopped by Wally World tonight and bought two 50-round boxes of factory .40 S&W ammunition to do a little experimenting this weekend. One was good old Winchester white box, 180 gr. .40 S&W. One was "Perfecta" brand, with a weird bullet weight (170 gr.) but brass cased and...

I...what? You're going to have to clarify that one. CCI Blazer is perfectly standard .40 S&W ammunition. It's worked perfectly for years in my S&W M&P pistol, and my ex shot hundreds of rounds of it in her Springfield XD-M without issue as well. I'm not even going to bother busting out the...

Yesterday I had an odd experience at the range. My S&W 610 simply would not set off four cartridges of CCI Blazer .40 S&W (165 gr., aluminum case) ammunition. I tried them all three or four times, in both single and double-action mode, but they just would not ignite. I only shot about half a...

So, here are the photos (long - you were warned) That earlier photo was just a taste. I have even more than these, but here are the most informative. Each side shot is of the target immediately above it (e.g. after being hit by whatever round specified on the label)...

Thanks for a thoughtful, informative, and levelheaded reply. It's the kind of stuff that keeps me interested in posting. You're absolutely right about the steel core issue, and it's very much in my thoughts. I think that before I put any more 5.45 on my plate, I will attempt to determine...

There might be something to that. Our range is also in the desert, albeit an urbanized desert. Tracers are Bad Form per club rules, for the reason you suggest. There wasn't any dry brush near where I hung my target. Didn't see any sparks, but that doesn't mean they don't happen. It's...

Many of us have dealt with folks who are convinced that any ammunition containing the smallest trace of steel will, without exception, damage steel target gongs beyond repair. Even if no hole results, they say, steel-sandwich bullets will cause dents that render a target unsafe, due to ricochet...

Some data on web expansion My brass and I just spent some time with my dial caliper. Here's what I found. Averages are based on measuring 10 cases of each type. Starline brass from my "normal" 10mm reloads (mostly 6.0 grains Bullseye under a 170 grain cast lead bullet): average diameter...

Yes, I was happy to see no cratering of the firing pin strikes. However, I found some of the flattening rather extreme and alarming, particularly the following examples: Far left on the bottom row of #1 Second from the left on the middle row in #2 Second & third from left on bottom row in...