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#7086695 - 02/20/18 06:58 PM Polishing a feed ramp on a .22
Tff caribou Online   content
Extreme Tracker

Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
I have a new buckmark that has been a lot of fun to shoot. But about once per mag a round will get hung up when feeding. If I bump the slide it will go forward and itís fine. Seems like ammo is hanging on the feed ramp a little and getting in a bind when the slide tries to go forward. It does it with multiple kinds of ammo. How should I go about polishing it?
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The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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#7086700 - 02/20/18 07:01 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
jeffbird Online   content


Registered: 03/09/09
Posts: 3011
Clean it well and then try different ammo. Let the chamber soak overnight with Wipeout. Use a brush in the chamber to remove residue. Gumout Carb cleaner is good to soften caked up lube and crud if that is an issue.

22 ammo selection has significant influence on function and accuracy. What kind are you using? Eley and Lapua make ammo specifically for pistols. Might be worth trying a box of each as controls.

If you just have to polish it, use a copper bore brush by hand on the ramp. DO NOT break out the beer and Dremel tool!

One other potential issue is a bad mag. Try some different mags and see if that makes a difference.

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#7086726 - 02/20/18 07:22 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Tff caribou Online   content
Extreme Tracker

Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
Iíve shot CCI mini mag, standard velocity, federal bulk, federal hp, blazer, and federal auto match. Itís done it with all of it except for CCI stingers (theory below)This is what happens.



The reed ramp goes up the the chamber, and there is a little lip there. The feed ramp doesnít go up with a clean transition to the chamber. I believe the rounds with a lead nose are catching on that lip, slowing down slightly, then getting in a bind. As I said, if I tap the slide, itís all good. The stingers donít seem to hang up because they have a copper nose. The stingers also grouped better than everything else, which makes me think maybe some of the lead nose rounds are getting deformed when they hang up. Stingers are hard to find, and expensive, so I donít want to just shoot them only.
_________________________
The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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#7086756 - 02/20/18 07:40 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Kevin1 Online   content
Tracker

Registered: 04/06/11
Posts: 669
Loc: Allen Tx
How many rounds does it have? If a lot, a new recoil spring might be needed.

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#7086766 - 02/20/18 07:46 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
jeffbird Online   content


Registered: 03/09/09
Posts: 3011
You have it in front of you, so I defer to you, but trying a good cleaning and lube first, especially since it new and breaking in, is a safer go slow approach to troubleshooting. Altering the ramp geometry is irreversible.

This is helpful for finding ammo. Good luck.

http://gunbot.net/ammo/rimfire/22lr/


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#7086829 - 02/20/18 08:22 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Tactical Cowboy Offline
Extreme Tracker

Registered: 08/23/11
Posts: 3515
Loc: Snyder
Dremel, polishing compound and a soft brush. You arenít going to mess anything up with that combo.
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#7086836 - 02/20/18 08:28 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
RiverRider Online   content
THF Trophy Hunter

Registered: 11/11/07
Posts: 8019
Loc: Wise Co.
Could be that the bolt face needs cleaning or a bit of polishing too.
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I'm here to give and receive knowledge, not affirmation or adoration. If you don't like it, mierda dura. Intellectual honesty is not for fragile egos.

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#7086867 - 02/20/18 08:45 PM Re: Polishing a feed ramp on a .22 [Re: Kevin1]
Tff caribou Online   content
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Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
Originally Posted By: Kevin1
How many rounds does it have? If a lot, a new recoil spring might be needed.


Less than 500. I just bought it last week.
_________________________
The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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#7086870 - 02/20/18 08:47 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Tff caribou Online   content
Extreme Tracker

Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
Hereís what it looks like. This was pre cleaning. But it was clean when I took it out today and it still gave me the same problems.


_________________________
The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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#7086889 - 02/20/18 08:58 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Kevin1 Online   content
Tracker

Registered: 04/06/11
Posts: 669
Loc: Allen Tx
Contact CS to figure it out. You should not have to mess around and polish a new gun to make it reliable. My SW22 Victory is reliable with every ammo, except the CCI tactical that seem to have too much lube and I get the same type of malfunction as you.
You should not have to go the Lapua/Eley route nor polish anything to make the gun cycle.

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#7086898 - 02/20/18 09:04 PM Re: Polishing a feed ramp on a .22 [Re: Kevin1]
Tactical Cowboy Offline
Extreme Tracker

Registered: 08/23/11
Posts: 3515
Loc: Snyder
Originally Posted By: RiverRider
Could be that the bolt face needs cleaning or a bit of polishing too.


True

Originally Posted By: Kevin1
Contact CS to figure it out. You should not have to mess around and polish a new gun to make it reliable. My SW22 Victory is reliable with every ammo, except the CCI tactical that seem to have too much lube and I get the same type of malfunction as you.
You should not have to go the Lapua/Eley route nor polish anything to make the gun cycle.

Also true, but not always the case.
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#7086902 - 02/20/18 09:09 PM Re: Polishing a feed ramp on a .22 [Re: Kevin1]
Tff caribou Online   content
Extreme Tracker

Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
Originally Posted By: Kevin1
Contact CS to figure it out. You should not have to mess around and polish a new gun to make it reliable. My SW22 Victory is reliable with every ammo, except the CCI tactical that seem to have too much lube and I get the same type of malfunction as you.
You should not have to go the Lapua/Eley route nor polish anything to make the gun cycle.


As silly as it seems, that hadnít even occurred to me.
_________________________
The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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#7086910 - 02/20/18 09:12 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Tff caribou Online   content
Extreme Tracker

Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
Elk castle in ft worth is an authorized browning service center. Iíll go see them in the morning.
_________________________
The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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#7086919 - 02/20/18 09:16 PM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
jeffbird Online   content


Registered: 03/09/09
Posts: 3011
Kevin for the win.

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#7087563 - 02/21/18 11:58 AM Re: Polishing a feed ramp on a .22 [Re: Tff caribou]
Tff caribou Online   content
Extreme Tracker

Registered: 08/27/12
Posts: 4026
Loc: Watauga, TX
Dropped it off at elk castle this morning. I could tell after cleaning it last night that there are 2 distinctly separate grooves on the feed ramp. The rounds arenít all feeding consistently because it seems like some of them come in at an angle. He said they may have to send it to browning. Hope I donít have to wait 8 weeks or something, but who knows. I just hope they fix it. Iíve heard lots of guys tell stories about getting guns back from manufacturers and being told ďnothing is wrong with itĒ
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The very atmosphere of firearms anywhere and everywhere restrains evil interference. -George Washington

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