The Firing Line Forums - View Single Post - what lifts the head of the round, in the magazine, in a Ruger Mark III?

drail · August 19, 2009, 07:16 PM

Ruger Mark .22 pistols will run for only so long without thorough cleaning and then they won't run. The same thing is true for the magazines. Most .22 LR ammo uses a nasty waxy lube that builds up near the top of the magazine and on the feed ramp and bolt face. Some brands are worse than others. I've always had good luck with Federal. PMC is the worst. Almost every Ruger Mark pistol I've seen that had feed problems simply needed a good cleaning to make it run like new. CLP works very well to dissolve this gunk. This also true for most .22 semi auto pistols (and rifles). Learn to take the magazines apart and clean them until no crud remains. They are an excellent design and will give long service life if maintained. They are really an amazing gun for the price.

August 19, 2009, 07:16 PM	#4
drail Junior member Join Date: February 2, 2008 Posts: 3,150	Ruger Mark .22 pistols will run for only so long without thorough cleaning and then they won't run. The same thing is true for the magazines. Most .22 LR ammo uses a nasty waxy lube that builds up near the top of the magazine and on the feed ramp and bolt face. Some brands are worse than others. I've always had good luck with Federal. PMC is the worst. Almost every Ruger Mark pistol I've seen that had feed problems simply needed a good cleaning to make it run like new. CLP works very well to dissolve this gunk. This also true for most .22 semi auto pistols (and rifles). Learn to take the magazines apart and clean them until no crud remains. They are an excellent design and will give long service life if maintained. They are really an amazing gun for the price.