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Old 11-05-2013, 03:28 PM   #101
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Originally Posted by Hejazimnt View Post
I am really curious about Metal Injection Molding (MIM). I will look in the university library and see what find. I have seen plenty of investment castings, and I really don't think that's how most of the P22 parts are made. If my estimates are close, I think Walther only spends about $9.22 to make each P22 pistol. My guess is that the spend about $3.50 to make their 3.4" barrel.

Glocks only cost about $150 to make, and they almost never break.

Marshall
There, fixed for you. We've discussed this quite a bit over the years....powdered alloy mixture ( there are many and they are in everything) packed into a mold, fired, it shrinks about 10% IIRC and you can get above 99% solid metal. I think those circles are all injection ports. MIM'd isn't necessarily bad but there can sure be some bad engineering design, some improper alloy mixtures and what do I know about it????? I'm no metallurgist...I'm a brickologist. M1911
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Old 11-05-2013, 07:41 PM   #102
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I'm no metallurgist...I'm a brickologist. M1911
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Old 03-04-2014, 03:33 PM   #103
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I'm not having this issue but what are some thoughts regarding if your pistol does not have consistent trigger pull weights. What could cause that....4 lb one time, 6 lb the next for example. Sear not seating fully, wear,??????? has anyone ever read of this being an issue? If so, what caused it and what was the solution? M1911
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Old 03-05-2014, 03:11 AM   #104
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Maybe the slide vibrates unevenly during shooting, due to an ammo issue (powder charge not quality-controlled), or a next-bullet-chambering issue in which the shake and rattle is just so as to seat the trigger bars differently or something in that area...
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Old 02-28-2015, 10:56 AM   #105
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My P22 had a 6 lb. pull. I lubed the sear and notch with G96 synthetic gun oil and it dropped to 5 1/2 lbs. Easy work for a half pound reduction.
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