I get these questions often,so let's nip a bunch in one fell swoop. The questions being geared towards F/F(feed/function) ala various Remmie flavorings. Shit is easy to diagnose,if you know what you are looking for and where to find it.

1) This pertains to any/all chamberings,whether .378,.473 or .532 or deviations of. If shit is jumping the rails,you likely have her assembled incorrectly(that easily making up 95%+ of all "issues").

Here is a .378 short wearing an as issued magbox(which is one of at least three variants),with all seated correctly. It is an ADL box,less the ADL box retainer screw in place.



If shit is still jumping the rails,with correct assembly being determined(including the follower,follower spring and their geometry),then things are still an easy fix.

2) The fix being the extreme latitude afforded the magbox's lips ability to be manipulated,in relationship to the receiver's rails. Here you can see the daylight alongside the scalloped section of the magbox and all of that daylight is latitude.



To preclude something jumping the rail(s),simply massage the forward 1/3 or so of the magbox's lips outward,so that more of the catridge's surface area is trapped beneath the rail. While I'm sure a fucking idiot could fuck that up,it assuredly isn't Rocket Fucking Science. Tweak lightly and ascertain function until you are there.

Again,only a fucking idiot would be making F/F assertations with live fucking ammo.

3) Here's a quick cursory peek,regarding a visual assembly verification,less disassembly. One can immediately note that the portside of the mag,is nestled fully into the cutout within the receiver that accepts same.



Obviously,on a fully assembled rifle you pull the bolt and depress the follower to yield the peek.

4) Another cursory peek,though purposely shot at 180 to beat shit into heads. On all Remmie magboxes excepting the .378 variants,one can easily pull the bolt and depress the follower,to see correct box assembly. The rear of the magwell will be mated or boasting a CH lineal seam and it's surface will be flush from transition from starboard to port.



This was purposely poked together wrong,which will of course induce F/F woe.

5) Another look,from a different angle,of that same assembly attempt.



Shit is just as glaring,loook from the top down,while wearing it's stock. LOTSA guys fuck this up.

6) This is a portside receiver peek of that incorrect assembly. Which is reiteration to peek at both angles,when making a determination.



7) This why you can't see .378 woes,due to the spacer in the ass that robs a view at the seam. You can still have the magbox installed askew and disassembly is the best way to resolve "weirdness" there.



The red 3M tape also hints of how you reasemble less a woe,in that making the seam initially is a good start and secondly it precludes an ADL's follower spring from being trapped between magbox and stock belly,which of course will cause woes as well.

The astute savvy that on a BDL,you can pop the bottom,pull the follower and get a very good look at shit without popping the stock,which is something that you cain't do in ADL fashion. Though I prefer ADL.

Lastly,fully seating the follower spring onto the follower bears much fruit(hint). I see that one fucked up often too. Also the attitude in which the follower rides the spring,is another that folks like to fuck up. I'd take some pics,but am enjoying a snow squall which killed my pastel ambient light.

I ALWAYS put an extry bend in the 4-corners of the magwell,so that a little tapping is requisite to fully seat the magbox. They cannot shoot loose,though I've been knowed to run a bead of RVT silicone around the juncture,just for the fuck of it.

Putting shit together correctly,has been knowed to enhance one's "luck"......................(grin)

Not all followers is equal and I don't much care for stamped .378's.



How to nip a fuckup squarely in the buds,as per ADL assembly.



Note that she's a whack shy of being drove home,but once she's there,it's until I wish it otherwise. The shiny corners are left slightly exposed,to pinpoint the 4-corner tweak approach to longterm happiness.

Mmmmmmm...now I wonder if it'll return to zero after reassembly.............(grin)

With luck,we'll get to touch upon the 82 Trick Move train of thought and mebbe someone with a fucking Winchester will feel like flapping their gums.....................(grin)

I take it you can't go fishing..............
outside that is........

I very much enjoy the Peter Paul Mouser Motherfuckers,because if you handed a balloon to 10 of them,9 would be stumped on how to tie a knot in the end of the fucking thing,thinkin' they'd gotten another "bad one".

Common fucking sense is a revelation to many................(grin)

Stick,
The stamped is all that is available new from Remington, correct?

I'd say if you order from Remmie,you will reliably receive a stamping.

Little things start to add up in the big picture,when one starts musing high volume round counts of the utility sort,in less than spectacular weather and when the last "case" the system has seen is the cardboard one she shipped in.

Meat and Taters Rifles sing no matter the circumstance..............

I have a 223 AI on a Stiller action that I am having problems with. Thanks for the picture post.

What's it doing to you?.................

Bullet tip jams into the action or barrel shank when closing the bolt. 80 sierra loaded to 2.50. My 700 AI does fine. Both have Gunrunner followers and the mag box spacer has been modified the same on both. Both were built by same smith, same reamer, same dies.