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Dave T
02-11-2021, 12:27 PM
The thread about BK grip adapters reminded me I haven't told anyone about the latest arrival here at the domicile in the desert.

I took delivery last week of the first K-frame I've owned in quite a few years. It's a Model 10-10 that California Dept of Corrections turned in when they went to semi autos. It shows signs of a good bit of holster time but looking inside the cylinder window (standing breech), the chambers, and the barrel, this thing has been fired very little. I don't think anyone has been inside the action since the trigger pull is just awful (heavy) and the side plate screws were a woolly bear to get out. I cut 1-1/2 coils off the rebound slide spring and put in a Wolff reduced power main spring. Trigger pull is much nicer now. We'll see if it sets off the Winchester SP primers in my +P hand loads.

The cool thing is it is a 4" HB, Round Butt with real color case hardened hammer and trigger and no IL. It's built the way Smiths used to be built, and still should be but I digress. Don't have a K-frame holster in the house but that may not matter as I bought this as a truck gun. Digging through the revolver stuff I was pleasantly surprised to find three Comp 2 speed loaders for the K-frame. No idea where those came from (lol).

No pictures yet either. I don't do smart phones so to take pictures I have to dig out the camera, charge the battery, find the tripod...good grief! It sounds tiring just typing it. Heck, everybody here knows what a heavy barrel M-10 looks like and what a round butt K-frame looks like. Put 'em together and you have it. Oh and the spare BK grip adapter I had fits fine with the factory RB Magnas that came on it.

As soon as I get out to the range and test fire it I'll report back.

Dave

Wheeler
02-11-2021, 12:47 PM
I picked up one of the 10-8s that were floating around a few years ago. Same gun except square butt. It will split a business card at 15 yards using 158 LSWCs. Congrats on a nice shooter, I can’t wait to hear your range report.

Zeke38
02-11-2021, 05:37 PM
The 10-10 is really a nice edition to the M&P line, the ones I've shot are very accurate and user friendly! Enjoy!

Dave T
02-11-2021, 06:54 PM
Actually got to the range for about an hour this afternoon. Test fired the 10-10 and found it doesn't like WW primers, at least with the Wolff reduced powder spring in place. I either need to switch to Federal primers or get a longer strain screw. I'll look through the parts drawer that has old strain screws and try to find a longer one first before switching primers.

The journey to learn the new revolver continues,
Dave

FrankB
02-11-2021, 11:14 PM
I ordered a Wolff standard mainspring for my 4” Model 686, and the DA trigger pull dropped to around 6lbs. I immediately replaced the stock S&W spring, and continued with an already fine trigger. I read that some people are buying 8-32x1/2” stainless grub screws from Home Depot, and that gives enough length for proper tension on the spring. It’s a grub screw, so it has to be used with loctite.

Jim Watson
02-11-2021, 11:28 PM
Teddy Jacobsen had a strain screw with the tip ground into a pyramid to click stop in the "power rib" of a Wolff spring.

Wheeler
02-12-2021, 10:18 AM
I ordered a Wolff standard mainspring for my 4” Model 686, and the DA trigger pull dropped to around 6lbs. I immediately replaced the stock S&W spring, and continued with an already fine trigger. I read that some people are buying 8-32x1/2” stainless grub screws from Home Depot, and that gives enough length for proper tension on the spring. It’s a grub screw, so it has to be used with loctite.

I learned something today. I have never heard of a grub screw, only set screws. Now that I’ve learned something today I can count my day as a success. :)

Jim Watson
02-12-2021, 11:58 AM
I always thought of "grub screw" as a British English term.

Dave T
02-12-2021, 04:42 PM
OK. I didn't want to admit this but I have no idea what a "grub screw" is. (I'm so ashamed)

Dave

Half Moon
02-12-2021, 04:56 PM
OK. I didn't want to admit this but I have no idea what a "grub screw" is. (I'm so ashamed)

Dave

I had to look it up too:

https://duckduckgo.com/?q=grub+screw&t=h_&iax=images&ia=images

Oddly, even though I didn't know the name, I've used one of these to replace a missing stain screw in a revolver before...

Dave T
02-19-2021, 08:46 PM
Up date on the RB 4" M10-10.

I did not find a longer strain screw and I confess I didn't go to the HW store for a grub screw. Instead I pulled out the little drawer into which I've dumped half a dozen or more S&W main springs over the years. I found the factory spring I had replaced with the Wolff which was giving me occasional miss-fires. I found a non-ribbed main spring that curved a bit more than the factory version and tried it in the K-frame. Fit fine although I have no idea what it came out of.

Anyway it wasn't until the middle of this week I got to shoot the gun again. The same hand load that caused problems before (10.5g 2400/158g Berry's plated FP) went off every time, for me and the other two guys I was with who wanted to shoot it. Miss-fire problem is solved and all is right in the revolver world...except now I need a way to carry this in the truck. Life is just one thing after another. Ain't I lucky. (smile)

Dave

revchuck38
02-20-2021, 08:30 AM
...now I need a way to carry this in the truck.

This one's easy. Get a good holster for it. Put the holster on. Put the revolver in the holster. Get in the truck. Problem solved. :)

Dave T
02-20-2021, 10:28 AM
LOL - Chuck, if I was physically up to carrying an all steel gun every day I wouldn't need a "truck gun". My "carry gun" is a Scandium framed revolver in my Maxpedition GTG bag. I wanted this M10 to be a gun that's available anytime I'm away from home, and something for my wife to grab in an emergency.

Dave