.22 Ammo type w Mark IV

[Plinker]

I had a recent jamming issue with the Ruger Mark IV. I had a clean pistol btw.

I had two different types of .22 rounds, Remington and Winchester. I separated them out and realized that the Winchester from the white box was the culprit. I had no jamming w the Remington rounds.

Are there any other Ammo types to steer clear from with the Ruger Mark IV? I hear CCI are very good

Thanks in advance

 

[XUSNORDIE]

CCI mini mags, Fed Auto Match and FED Champion work best in my MKIV and MKIII.

 

[hittman]

Each firearm can be different. 22s are finicky; both the ammo and the guns.
My advice would be to always avoid Remington for example. But since it works for you …. Stick with it.

 

[contender]

As noted,, each firearm is a machine unto itself. You have to find what works for you & your gun.

 

[rugerguy]

yes, like gas in your car, gotta find out what works best for YOU.....

 

[hedrok]

Had a similar problem and cured it completely by using a small quantity of “Flitz” polish on a swab mounted in a drill and cleaned out the chamber. I took great caution not to go in too deeply…just the length of the casing.
Never needed to do it again…just kept the gun reasonably clean.

 

[Kevin]

Good advice here. I’ve found the bulk Winchester white box to be fairly good. Maybe 3 or 4 bad rounds in the box. But not bad.

Usually CCI stuff works better as said. This is in a Mark IV 22/45.

 

[arcticruger]

Theses are my favorite

 

[Plinker]

Great advice! Thank you all. By the way, where do you guys typically get your ammo?

 

[Plinker]

 

[hedrok]

Best place I’ve found for CCI SV is SGAMMO, in Oklahoma.
Always consistently fair pricing with free freight over $200.

 

[Plinker]

Just finished at the range. Tried three types of cci ammo

Standard velocity 40gr had 5/100 misfires
Mini mag 36 gr 1/100 misfires
Mini mag 40 gr 0/100 misfires

 

[hedrok]

The larger powder charge in the mini-mag seemed to “power” the process more reliably than the lower velocity (1235fps vs 1070fps) in not only unpolished chambers, but also in a “less clean” firearm. Like I said earlier, polishing the chamber solved it all.
For me, the mini-mags function well even in a filthy firearm…at least to a point…lol.

 

[mirglip]

Best place I’ve found for CCI SV is SGAMMO, in Oklahoma.
Always consistently fair pricing with free freight over $200.

This is what I buy. CCI burns cleaner than other brands of bulk .22 so I don't have to clean my guns as often. CCI MiniMags are great but my Ruger Mark II's cycle just fine with CCI SV which is more accurate.
I don't buy CCISV by the brick, I buy it by the case....several cases at once.

 

[TestEngineer]

Just finished at the range. Tried three types of cci ammo

Standard velocity 40gr had 5/100 misfires
Mini mag 36 gr 1/100 misfires
Mini mag 40 gr 0/100 misfires

You shouldn't be having misfires with the cci ammo. If your pistol is reasonably clean, the firing pin is probably the culprit. The mk4 Ruger FP is a light weight titanium pin.

I recommend you purchase a Volquartsen bolt tuneup kit. It's an all steel FP and an extractor with a better shape than Ruger's. I'd look to buy from Rimfire Sports. Their prices are better than most and shipping is always free.