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Posted: 1/15/2004 7:10:02 AM EDT
| Has anyone had luck getting this unit to fire consistantly. I've tried several different things. The russian ammo seems to run thru without a missfire. It's expensive and hard to get at times. I'd like to get it5 setup using an ammo that is easy to get. I've got extra firing pins and a complete extra kit. Before I start taking off metal I thought I'd give you folks a try. |
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Mine is very consistant. I shoot the Federal Copper Plated HP that I buy from WalMart for $8.88 for 500 rounds. Stingers also work well. Make sure the unit is lubricated properly - and you are getting good hits on the cases. I had a problem with the firing pin getting chipped (poor reliability when that happened) once it was replaced the unit ran fine again. |
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Getting good action out of the firing pin is the biggest problem. Very light indentations if any at all. Tried lighter firing pin spring. Same problem. Gave the hammer more clearance in the back of the bolt. Same problem. #@% $#@ thing is making my hair go grey. Thanks for you response. I'll try so of the ammo you are using. |
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Gunny, Based on your comments of the light strike I'd look at the following: 1) Firing Pin (Is it damaged/chipped? Same length as your spare?) 2) Has 'gunk' (carbon, lead, etc) built up in the firing pin channel - thus preventind the firing pin from going all the way foward? Or cusion the firing pin so it doesn't hit hard? 3) Final item if #1 or #2 aren't it - if the M261 has never worked right (even when new) then it could be the firing pin hole was drilled to an improper depth thus preventing the firing pin from striking properly (but sensative primers will still go off - thus only some ammo works). |
| Your 3rd comment seems to be the logical one. I had tried bring up the shoulders up on the original firing pin. May of been I did'nt bring one of them up far enough. I do have a spare serup that I haven't used yet. I'll give that one a shot and if it works fine I'll start doing some depth measurements on the problem one. Thanks for your help. I'll get back to let you guys know the results so if the question comes up again you know how this one worked out. |
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I used to have the same problem... and I resolved it by slightly modifying the firing pin shape. Try removing some metal (a VERY small amount) from the firing pin end so that it looks more like an "I" than an "O". In this way the striking energy is concentrated on a smaller area of the round, and consequently hitting it harder. Or you could try another brand of 22 LR, until you find what your rifle likes. Mine, for example, hates the copper plated WW high velocity stuff (jams once every 15 rounds) but just loves the target type ammo. Another small modification is to have the chamber throated, just as a Colt 1911 barrel. Again, remove just a small amount of metal. One last thing... keep the unit clean, otherwise its a jamamatic! |
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