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I went out this morning and ran another 140 rounds through my Ruger. I started with ten rounds of brass cased reloads to verify sights and then went into positional testing.
Testing was done with four magazines loaded with WOLF 62gr JHP. The gas regulator was set on #3 since I've had several short cycles with this particular lot of Russian ammo.
Magazines used were two Lancers, a TangoDown ARC and a C Products stainless steel. I chose these for no other reason than they were already loaded and ready to go.
Testing consisted of firing six rounds prone with the magazine resting on the ground, six rounds in reverse rollover, six rounds in rollover, six rounds in SBU and six rounds standing with the carbine at hip level but held upside down.
I experienced two failures to extract with the first two rounds out of the 2nd magazine. I had another somewhere through the 3rd magazine. All three of these were cleared with a cleaning rod. Otherwise the rifle was continuously fired with the only pauses being to change position and reload.
I had a failure to feed with the 3rd round fired in the upside down position on the last magazine. At first I thought this was a failure to extract. When I rolled the Ruger over to remove the magazine, I saw that the chamber was clear and the bolt had stalled out. A quick tap on the bottom of the magazine cleared this and I finished the remainder of the mag upside down.
Once the gun was good and hot, I finished off the day with ten additional rounds of brass cased reloads (50gr Sierra Varminters with AA#2200 powder) to check accuracy with a hot barrel and handguard. From the sitting position at 100 yards, I fired four rounds in the "B" and one into the "A" on the head of a USPSA target.
One little caveat; don't burn yourself on hot casings when switching from rollover to SBU. During one of the strings, I stuck the inside of my forearm down in my recently ejected pile of hot steel cases. Ouch! I'm sure anybody watching got a good chuckle out of this one! I think I might have uttered a dirty word or two, as well.
Owner/Instructor at Semper Paratus Arms
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Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com
Here's a gun with some kind of, as of yet unidentified, major issues.
https://www.m4carbine.net/showthread.php?t=34235
Last edited by Tokarev; 07-18-09 at 10:39. Reason: Added pics.
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