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I inherited my Dads Winchester Model 250 and after having it professionally cleaned & oiled, I took it to the range, It began shooting fine then numerous mis fires began happening every 5th or 6th round. I then left the range and took the firearm home cleaned it again. I then returned to the range and it began misfiring again. After several attempts I stopped shooting the firearm. Has anyone ever had this problem before and what was the cure.
June 5, 2015
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Could be as simple as too much oil in bolt causing the fireing pin to foul with 22 filth. How are the hits on the misfired rounds?
Vince
Southern Oregon
NRA member
Fraternal Order of Eagles
“There is but one answer to be made to the dynamite bomb and that can best be made by the Winchester rifle.”
Teddy Roosevelt
November 1, 2013
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Vince said
Could be as simple as too much oil in bolt causing the fireing pin to foul with 22 filth.
Filth–unburned powder–the constant aggravation with most RFs. Hard to believe this problem couldn’t be solved with propellants that burned cleanly enough to minimize the trouble. My Colt .22 conversion unit begins jamming before shooting one box.
I think any oil on firing pin itself may be too much, when combined with the inevitable powder residue.
March 31, 2009
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What does the strike look like on the rounds that did not fire? Do they look the same as the ones that did fire?
September 28, 2016
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Tommy Mangi said
I inherited my Dads Winchester Model 250 and after having it professionally cleaned & oiled, I took it to the range, It began shooting fine then numerous mis fires began happening every 5th or 6th round. I then left the range and took the firearm home cleaned it again. I then returned to the range and it began misfiring again. After several attempts I stopped shooting the firearm. Has anyone ever had this problem before and what was the cure.
If the firing pin strikes look good, change to a different type or lot# of ammo.
Erin
September 24, 2022
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What Erwin said. I have had to replace the firing pin on several older 22 rimfire rifles because someone snapped it many times and damaged the firing pin.
September 24, 2022
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And Tommy, Numerich Arms has always had firing pins for the Model 63 every time I have needed one, but now that I think about it, I THINK NUMRICH has been bought by an outfit called Gun Parts Company. Anyway, it is no problem to replace the firing pin or much of anything on the 63. LOOK AT THE SCHEMATIC AND YOU CAN FIGURE IT OUT. I’m working on being 81 years old and my eyesight has declined to 20-200 in the right eye and 20-50 in the left which is the only eye I can really see out of. I don’t like to have to do much small work anymore simply because I can’t see it very well. But if you have half decent eyesight and any mechanical ability at all, and some GOOD, HARDENED QUALITY tools, you can do it. Just don’t do it with soft, cheap tools from Wal-Mart or you are going to booger everything up.
All the best and good luck with getting your rifle shooting like it is capable of shooting. They are truly a joy to shoot.
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