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This is a discussion on Mark IV Feed within the Ruger Rimfires forums, part of the Pistol & Revolver Forum category; Just got a new Mark IV Lite and took it to the range with the two factory mags. I shot 50 rounds of Aquila Interceptor ...


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Old March 26th, 2017, 03:50 PM   #1
 
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Mark IV Feed

Just got a new Mark IV Lite and took it to the range with the two factory mags. I shot 50 rounds of Aquila Interceptor out of both mags. I had 7 rounds total that failed to feed. In every case the round appears to have come out of the mag at too steep of an angle and missed ramp, hitting the top of the receiver. At least that was where the round was when the bolt came forward: the bullet jammed against the top of the receiver with the round at a steep angle. I had no stove pipes. I then shot 50 Norma Match. The first shot stove piped. I had two others that didn't eject. Everything else worked as expected.

Is Aquila ammo to be avoided? Or is this part of the normal break-in?



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Old March 26th, 2017, 05:04 PM   #2
 
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I haven't shot Aquila in mine yet. Guess I'll have to try it next. The only ammo it won't feed so far is CCI Velocitors.

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Old March 26th, 2017, 05:29 PM   #3
 
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I've cleaned the pistol and I plan to try it again later this week with CCI standard velocity and Eley Target. My Pac-Lite takes those just fine, and also the Norma. If after 400 rounds I am still having trouble it will go back to Ruger for a tune up.
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Old March 28th, 2017, 02:35 PM   #4
 
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After cleaning and lubing the gun I shot 50 CCI SV in the factory mags with no problems. I then shot 50 Eley Target. I had 2 FTF, both in the #8 spot in the mag. So I think I'll declare victory and move on.

BTW. the gun seemed awfully dry when I disassembled it after the first trip to the range. I've always gone along fat, dumb and happy assuming that a new factory gun was ready yo shoot. Should at least a semi-auto be field stripped and lubed before the first range trip?
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Old March 29th, 2017, 04:47 PM   #5
 
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Yes, a new pistol needs to be striped and given a good cleaning before shooting it for the first time. The factory may have used a heavy grease on some parts and that will slow down the action and may cause issues.

I have been shooting since the 1970's and I believe in running a semi-auto a little bit on the wet side. I've never had problems doing this and cleaning the gun after each shooting session.

Best of luck with your new gun!
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