What mistakes have you made or heard of someone else making while smithing?

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Mauser fan

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I was taken back a little by surprise this morning when a friend of mine called and said he had destroyed a Small ring Mauser after firing it for the first time after he had built it in an 1896 Swedish receiver in .257 BOB.

So after he calmed down long enough to get a word in edge wise. I asked him if he had the barrel off of the receiver when he drilled and tapped it for a scope and the answer was no. Then he went on to say the youtube guy video I watched didn't.

I then told him well you damned fool that was your first mistake and your second mistake was drilling through the chamber and not paying attention to your drill bit depth stopping at the depth when should have because you were distracted by someone watching you show off. Your third and biggest mistake you fired the damn thing afterwards without checking your work first. Because you would have caught your second mistake. Now where you or anyone else hurt? He said no just my pride. I said well you're damned lucky.

He then asked me how I knew exactly what happened. I watched your video that you sent me in a text message and even tried to call you to stop you but you didn't respond back. I said Ted I have known you almost 20 years now and I know how damned impatient you are. Your one of those guys that wants the instant self gratification of load shoot repeat without taking any thought into what it is you are doing 90% of the time. You were like that when I served with you and you're still that way. So take this as a mildly inexpensive lesson and try again. But take the barrel off first!!! That is why I have the fixtures to do that and more importantly that is why I don't let just anyone into my shop while I'm working. I don't want any distractions.

He said thank you for the insight Jeremy and being a true friend I'll call you again later when I try it again. I said good luck and hung up.
 
My first gunsmithin (at age 14) was to totally disassemble a Colt Police Positive.
Prying off the side plate with a screwdriver was just the first of many mistakes I made that day. It never worked well in double action ever again.

My next gunsmithin project involved a primo M1917, and a bench mounted grinder… :(
 
Well IF honesty prevails, this thread will be akin to a Church confessional, except the whole world is listening in not just your Padre !.....Many years ago in my amateur gunsmith hobby I authored a Anatomy Series Manual on the classic Sig P226 / 229 series. In order to complete the task I had to disassemble every last part of the pistol. Not a problem? UN-inhibited by common knowledge that Sig pins are removed right-to-left, contrary to conventional manufacturers. So, I began to wail away on the left side of the pin to remove it.....that didn't work for one additional surprise. The Sig firing pin retaining pin was splined, never intended to be driven completely out the wrong way. What to do when a pin can not be removed easily? drill it out of course. Which I did from the left side, not easy either. Finally removed the pin and was enlighted by the spline and stood before my Maker and apologized out loud for my stupidity. Forgive me Father for I had sinned. Oh, it does not end their. Upon reassembly I sourced a replacement pin from a very reputable parts house, only to learn the length of the splines on the left side of the pin were significantly longer than the factory pin specifications. Again, no amount of pounding could drive the pin from left-to-right into position, I thought maybe I just couldn't replicate the force that the hydraulic arbor machines that factory uses to insert the pin could be replicated on the bench. I still have this P226 BlackWater edition with residual small imperfections to remind me of my foolishness. A proper concave punch to address the dome shaped pin is a fine point as well.

I have compiled a List of Gunsmith Tricks & Truism's over the years for myself to review when suddenly I encounter an unexpected difficulty.

IMG_0743Sig 226 Blackwater copy 2.JPG CIMG2520a copy.jpg CIMG2535 copy.JPG Picture 2 copy.png DSC00007 copy.JPG DSC00015 copy.JPG DSC00016 copy.JPG Picture 2 copy.png Screen Shot 2022-12-13 at 6.18.23 PM.png

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I have a special set of punches for the early Sig's 229s pin. My 229 has over 23k rounds through it, recommended maintenance is at 25k. These pins can take a press to remove or a big hammer on a solid surface. They have had a history for a long time that they can be a bear to remove.
 
My worst one was a 10-22. I was 17 or so and I didn't really understand what bedding an action was all about, but wanted to do it anyway. My stainless "target" model 10-22 didn't shoot well and I was gonna fix it. I turned that gun into a brown blob. Lol. Hell of a mess. Still shot about the same. Still have it though. It's in a Choate pistol grip stock with a dot scope. Never did shoot any better.
 
I failed to ensure that the quill stop was locked while drilling a barreled bolt action receiver. The down force moved the stop and the drill penetrated the barrel all the way into the chamber.
 
My neighbor had a beautiful old Mannlicher/Schoenauer that he wanted to hunt with. Apparently, he asked around our rural area for opinions on the best gunsmith to have drill it for scope mounts, and then drove an hour away to drop it off. The "gunsmith" drilled the first set of scope mount holes in the wrong spot. That beautiful rifle now has lots of holes in the receiver.
 
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