Trimming the Feed Ramp?


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Clayne_b
March 14, 2013, 04:05 PM
To start off with.

Remington 700 SPS Varmint

Mcrees Precision Chassis. using the 10 round mag.

Here is what the loaded rounds look like in the mag.

http://i267.photobucket.com/albums/ii294/Clayne_b/0314131313_zps8f87fc89.jpg

http://i267.photobucket.com/albums/ii294/Clayne_b/0314131313a_zpsc968dbe3.jpg

http://i267.photobucket.com/albums/ii294/Clayne_b/0314131342_zps2303f7b2.jpg

When they are to the back of the mag they feed just fine. But after a shot they move forward and will not feed. They are going under the feed ramp. Is it a dumb Idea to trim a little bit off the feed ramp? It seems they are going under about half the gap of what you see between the tip of the bullet and the mag in the pictures above.

I dont really want to mess with the seating depth as they are shooting GREAT

3 at 510 yards

http://i267.photobucket.com/albums/ii294/Clayne_b/0312131930_zps4d4b5292.jpg

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holdencm9
March 14, 2013, 05:19 PM
In the 3rd photo it looks like the brass is not pushed up to the lips of the mag, like they are in the 1st picture. Are they "nose-diving" perhaps? Maybe it is a magazine/follower issue.

If mag issues ruled out, can't see how tinkering with the feed ramp could hurt anything. I don't know though.

hawkeye10
March 14, 2013, 05:26 PM
I can't tell you what is wrong but I do know that more feeding problems are caused my magazines in rifles and pistols than any thing else. You might want to seek professional help. Don

HarcyPervin
March 14, 2013, 05:35 PM
anything you can do with the follower to get the tips to ride slightly higher?

adelbridge
March 14, 2013, 11:35 PM
I have blended feed ramps successfully but you have a magazine problem. I can see fakes of copper in every picture. Can you shim the mag back in the stock?

chaser_2332
March 15, 2013, 12:16 AM
Change our ur mcree mags for AI and ur problems should go away. To fix that one bend you feed lips some, a little goes a long way.

Clayne_b
March 16, 2013, 04:24 PM
Before

http://i267.photobucket.com/albums/ii294/Clayne_b/0315131738_zps65547c50.jpg

After

http://i267.photobucket.com/albums/ii294/Clayne_b/0315132114_zpsea794b5e.jpg

Seems to work pretty good.

While I was at it. I gave it a new paint job

http://i267.photobucket.com/albums/ii294/Clayne_b/0316131416a_zpsbb1fcb57.jpg

http://i267.photobucket.com/albums/ii294/Clayne_b/0316131415d_zpsffd30f74.jpg

Vern Humphrey
March 16, 2013, 07:34 PM
That's a magazine problem, not a feed ramp problem. Your magazine is presenting your cartridges in a nose-low position.

Clayne_b
March 16, 2013, 08:11 PM
Bullets were to long to fit threw the cut out on the bottom of the action. trimmed that up a little and works good now

KimberLover
March 18, 2013, 08:48 AM
I bought a new S&W 45acp and it would not feed hollow points.
The round nosed bullets went into the chamber with ease.
After firing the first time, the hollow point would jam and be lodged against the feed ramp.
It took me about 30 minutes to file the slope on the feed ramp and polish it.
It never jamed again.
Point is, the feed ramp was too steep for the hollow point bullet.
Like yours, it stopped blunt against the ramp.
Where the ramp was supposed to be near the entry point on the barrel, it was actually about 1/32" from the taper in the barrel.
That much straight up rise in the feed ramp was causing the problem.
Check the distance from the feed ramp to the bevel in the barrel.
There may have been an error when the upper was machined.

RainDodger
March 18, 2013, 05:55 PM
I know you fixed your problem, but I've learned one thing in the years I've messed with guns of all kinds... taking off material is permanent. Do everything you can before you remove steel (or any material) from anywhere.

Clayne_b
March 18, 2013, 08:21 PM
It was NOT a magazine problem. The bullets were psychically to long to fit threw the hold in the bottom of the action. So I made the hole in the bottom of the action bigger

Scooter22
March 18, 2013, 09:48 PM
Good fix. Looks like a similar mod the Turks did with many of their Mausers to fit the 8x57 spitzer bullets. They still work fine 70+ years later.

chicharrones
March 19, 2013, 08:40 AM
It was NOT a magazine problem. The bullets were psychically to long to fit threw the hold in the bottom of the action. So I made the hole in the bottom of the action bigger

It's hard to tell from our angle looking at the photos. So, the magazine was too long for the receiver opening not allowing the tips of the bullets to stay behind the feed ramp? :confused:

desidog
March 19, 2013, 01:44 PM
I also don't get it; is the feed ramp overriding the front edge of the magazine?

If there's room in the mag for the cartridge, there ought to be clearance on the feed ramp, unless the mag is out of alignment with the receiver / not seated properly.

Did you try a different mag before altering your receiver?

Good thing it's working now.

Clayne_b
March 19, 2013, 10:47 PM
The mags allow for loading longer than factor spec length I am loaded over factory spec. I cut the hole bigger than factory spec.

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