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Durkin Tactical Franklin Armory
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Posted: 5/4/2003 7:31:06 PM EST
I have been using South African .223.  Starting with a clean weapon, I start having double feeds (failure to extract/eject and second round jammed underneath) after about 120-200 rounds.  Last session, same results.  Conducted a field expedient cleaning (WD-40 and cleaning brush) to remove a build up of residue around the gas tube.  Worked fine after that.  Is SA ammo "dirty" or is it SOP to have to clean after 200 rounds or so?  BTW: this weapon is a Model-1 Sales 20" ES2 kit modified into a 16" dissipator on a Colt lower (the Smith opened up the gas port under the front sight to compensate for any gas loss due to barrel shortening).          
Link Posted: 5/4/2003 8:06:01 PM EST
I've fired up to 750 rounds of SA in one day through the same weapon w/o cleaning and never had that problem.  Your gas port might be a bit too small.
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