How much black soot should belch out of the rear of the gas cylinder on the first few rounds? I ended up with the front bench bag way forward on my first shots after the repairs and the front of the bag was black! I am sure there was some grease on the sides and front of piston so some burning for the first few rounds was expected. I smelled it a bit too. No problems on the first 16 rounds but a thunderstorm rolled in before I could shoot any more.
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normal, gas has to vent somewhereComment
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Thanks, just seemed like a whole lot of soot for 16 rounds. I had to very delicately file off some excess silver braze form the sides of the piston and was worries I took too much off.Comment
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Its the piston that drives the op rod not the solder. There shouldnt be any solder/brazing up the side of the pistonComment
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Uh, yeah, got that, but my equipment and brazing skill level was barely up to the task of getting the piston attached (not enough heat, need a better torch plus need smaller rod), it got messy, and once nickel silver brazing rod sticks it is *stuck*. It had to be mechanically removed or I would need a new piston. All in all not a pretty job. Another 72 rounds downrange today and no problems, so it at least is functional. If I took off too much I would think it would be short stroking from excess gas leakage as my ammo is the Hodgdon starting load for 150 grain bullets and IMR4895.Originally posted by Orlando View PostComment
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