Help! DBM and AICS Mag Over-Insertion

[Dunderhead]

I'm in the process of building my first "custom" bolt action rifle, and I must admit, I'm a bit confused. My build is a Zermatt Origin - LA receiver, a McMillan Game Warden stock, and a Greyboe M5 3.715 DBM bottom metal. After I dry fit everything together and went to insert my Accurate mag 5rd magazine, I discovered that there appears to be nothing that actually stops the upward movement of the magazine?

A quick internet search gave few answers other than "yup, that's just the way it is". While I'm new to building my own bolt action rifles, I'm nowhere near being new to firearms in general and I can't think of any other box magazine/latch system that works this way. Am I missing something? It sure seems like the slightest amount of accidental upward pressure on the mag while reloading will bind the bolt. I can't be the only one surprised by/disappointed with this set up?

Thanks in advance!

 

[Tiny Tim]

Following

 

[PopNFresh]

wouldn't your action eventually stop that issue

 

[Shane Lindsey]

Does the Grayboe require their own proprietary mag?

 

[Tiny Tim]

Sucks, but would a different bottom metal fix the issue?

 

[lancetkenyon]

That is the way it is.

when loaded, rounds in the mag will put downward pressure on the spring, holding the detachable mag down away from the bolt when the bolt is closed. When the bolt is opened, the weight of the loaded mag will keep it down unless you are cycling the bolt with the rifle help upside down.
If you are dragging the bolt across the top of the mag, you can add thin washers between the stock inlet and DBM bottom metal to slightly space it away from the action.

 

[Tiny Tim]

Is the latch adjustable as some are?

 

[JAYgs8163]

Does the Grayboe require their own proprietary mag?

No

 

[FEENIX]

I'm in the process of building my first "custom" bolt action rifle, and I must admit, I'm a bit confused. My build is a Zermatt Origin - LA receiver, a McMillan Game Warden stock, and a Greyboe M5 3.715 DBM bottom metal. After I dry fit everything together and went to insert my Accurate mag 5rd magazine, I discovered that there appears to be nothing that actually stops the upward movement of the magazine?

A quick internet search gave few answers other than "yup, that's just the way it is". While I'm new to building my own bolt action rifles, I'm nowhere near being new to firearms in general and I can't think of any other box magazine/latch system that works this way. Am I missing something? It sure seems like the slightest amount of accidental upward pressure on the mag while reloading will bind the bolt. I can't be the only one surprised by/disappointed with this set up?

Thanks in advance!

I previously had issues with AICS with BHA SR2, and my GS's magazine lip adjustment tool resolved the issue. It may or may not solve yours, but here it goes.







Good luck!

 

[FullCurl8]

Almost all DBM magazines only have a stop to keep the magazine from falling out, all will continue up like yours. Your action needs to have been ordered with correct magazine cut, such as RUM, Lapua, Magnum, standard Long action etc. You did not say what caliber it was.

 

[Dunderhead]

wouldn't your action eventually stop that issue

It does eventually stop, but not before going so high it blocks the bolt.

 

[Dunderhead]

Does the Grayboe require their own proprietary mag?

Nope, standard AICS longs.

 

[Shane Lindsey]

It does eventually stop, but not before going so high it blocks the bolt.

Was the McMillan specifically inletted for the Grayboe BM?

They may all say, M5, but just like "standard" picatinny...

 

[Shane Lindsey]

Try the washers as Lance suggested. Might give you just the right amount of clearance. Keep going until it won't pick up the round, then back it down and try adjusting the feed lips.