Bankruptcy R700 woes

I’ve stumped one customer service rep today, so I figured I’d dip my toes in this board and try as well. Thanks in advance if you’re able to follow me.

I’ve got a Remington 700 in .300 wm from right before their bankruptcy in 2013/14. The gun has frankly been a pain in the rear since it came into the family, but so have I, and I’m still around. It’s a cheapo SPS that came with a weird oem box magazine. In its original iteration, the gun shot well, but it kicked so hard my dad handed it off to me. In turn, I put it in the closet.

Recently, I switched a hogue over molded stock onto the rifle in an attempt to get some use out of it. It’s not the most popular stock, but it’s does make the gun significantly more shoot able. It’s also the only stock that will accept this magazine. However, at Hogue’s recommended torque I am getting significant signs of overpressure. I backed the action screws out as much as I was comfortable with, and the worst signs (stiff bolt, difficult extraction) have slacked off. I am still getting signs of overpressure around the primer strike. This puzzled the hogue rep.

The most glaring problem this new stock has is that it ejects the magazine after each shot. It took quite a bit of sanding and shaving the stock to get the magazine to even seat initially, but I am planning on taking a dremmel to the area around the magazine until I’ve got zero possibility of the stock itself releasing the magazine. It well could be that this is simply a failure of design - a new bottom metal wouldn’t be the worst thing in the world. I am wondering if this could be caused by overpressure, however.

I’m adding a picture of the fired primers, and if I am on the wrong track about anything, sorry!

I’m a new poster, so I appreciate any help!

TL;DR
Bankruptcy R700 overpressuring in an aftermarket stock, s%*+s itself after each shot.
IMG_3404.jpeg
 
It's not the stock causing pressure issues.
Different ammunition can cause it. Different lot number of ammunition can cause it.

Clean the barrel thoroughly. You could have carbon build up in the throat.

You do have ejector marks on the fired brass.
The cratering on the primer isn't right, but it is very common on remington rifles.

It's not the stock
 
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It's not the stock causing pressure issues.
Different ammunition can cause it. Different lot number of ammunition can cause it.

Clean the barrel thoroughly. You could have carbon build up in the throat.

You do have ejector marks on the fired brass.
The cratering on the primer isn't right, but it is very common on remington rifles.

It's not the stock
I definitely appreciate the information.

I ran probably 5 shots of old (2015ish) Winchester 150 gr, which gave me the worst issues (very stiff bolt, empty case not ejecting). Yesterday I just shot those two - that’s very cheap Herder’s loads.

I’m going to do a thorough cleaning of the rifle to cover my bases, but these are the first shots since the last deep cleaning it received.

Is there any other information I can give that would be helpful?
 
Nothing wrong with that brass. Rem 700's are known for having heavy primer flow into the firing pin hole. Look for ejector swipes on the base or super flat or pierced primers.

Heavy bolt lift could be coming from the action screws compressing the stock and making their way into the bolt lugs.

The magazine falling out also sounds like a poor fitment problem that could be coming from the screws overcompressing the stock and tweaking the bottom metal.

Easy route would be to go to something like an MDT Field stock that takes AICS pattern magazines and has a chassis.
 
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I’ve stumped one customer service rep today, so I figured I’d dip my toes in this board and try as well. Thanks in advance if you’re able to follow me.

I’ve got a Remington 700 in .300 wm from right before their bankruptcy in 2013/14. The gun has frankly been a pain in the rear since it came into the family, but so have I, and I’m still around. It’s a cheapo SPS that came with a weird oem box magazine. In its original iteration, the gun shot well, but it kicked so hard my dad handed it off to me. In turn, I put it in the closet.

Recently, I switched a hogue over molded stock onto the rifle in an attempt to get some use out of it. It’s not the most popular stock, but it’s does make the gun significantly more shoot able. It’s also the only stock that will accept this magazine. However, at Hogue’s recommended torque I am getting significant signs of overpressure. I backed the action screws out as much as I was comfortable with, and the worst signs (stiff bolt, difficult extraction) have slacked off. I am still getting signs of overpressure around the primer strike. This puzzled the hogue rep.

The most glaring problem this new stock has is that it ejects the magazine after each shot. It took quite a bit of sanding and shaving the stock to get the magazine to even seat initially, but I am planning on taking a dremmel to the area around the magazine until I’ve got zero possibility of the stock itself releasing the magazine. It well could be that this is simply a failure of design - a new bottom metal wouldn’t be the worst thing in the world. I am wondering if this could be caused by overpressure, however.

I’m adding a picture of the fired primers, and if I am on the wrong track about anything, sorry!

I’m a new poster, so I appreciate any help!

TL;DR
Bankruptcy R700 overpressuring in an aftermarket stock, s%*+s itself after each shot.View attachment 8687247
There are many "signs" when one thinks they are over pressure and, frankly, none of them are showing up on this brass. As stated the action screws have zer0 to do with pressure. Hard bolt lift, which I think you interpret as over pressure, can be caused by the fact that when you tightened the action screws you either didn't set a torque value or inlet allowed the action to become stressed (warped).
The magazine is OEM but odd that it came in a SPS package. They were usually cheap plastic stocks with blind magazine(ADL) .
I once had opportunity to shoot along side some area PD snipers and they were issued R700 Police models with this very same magazine. They all said the magazine had been a terrible problem as in falling out unexpectedly and not feeding reliably . Their "armorer" had tinkered with them in a fashion and got them working but those guys said if they released the magazine they were threatened with suspension (truth?).
I think it's time you started looking at a chassis with AICS mags or some arrangement of a BDL style stock with Wyatt's extended magazine.
 
My bet is that the action screws are what is causing the heavy bolt lift. I swapped stocks on a 700 once and the screws absolutely were coming contact with the bolt lugs and keeping me from even cycling the action on the new stock.

I also 3rd the position here that there isn't (from what the photos are showing) any pressure signs on the brass. Some bolts with large firing pin holes are going to crater primers extremely early in pressure...as in well before you even hit the SAAMI max. I'd be looking for a big circle or smear on the bottom of the case head OP.
 
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I prefer ADL or BDL for hunting. No mag to forget, lose, have weird issues with. Hunting with a magnum class rifle, it's rare to shoot 2 rounds in succession and even more rare to have to squeeze a 3rd round. Find a stock you like in either the ADL or BDL configuration and don't look back.
 
There are many "signs" when one thinks they are over pressure and, frankly, none of them are showing up on this brass. As stated the action screws have zer0 to do with pressure. Hard bolt lift, which I think you interpret as over pressure, can be caused by the fact that when you tightened the action screws you either didn't set a torque value or inlet allowed the action to become stressed (warped).
The magazine is OEM but odd that it came in a SPS package. They were usually cheap plastic stocks with blind magazine(ADL) .
I once had opportunity to shoot along side some area PD snipers and they were issued R700 Police models with this very same magazine. They all said the magazine had been a terrible problem as in falling out unexpectedly and not feeding reliably . Their "armorer" had tinkered with them in a fashion and got them working but those guys said if they released the magazine they were threatened with suspension (truth?).
I think it's time you started looking at a chassis with AICS mags or some arrangement of a BDL style stock with Wyatt's extended magazine.
"SPS-DM"

Personally, I thought they were only available in 308.
 
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Your brass looks fine, your sticky bolt may be from a front action screw that is a tad long. You changed stocks, minor fitting can be required.

When going from stock to stock, the action screws can need fitting.

-way back when HS precision was cool, I had a stock take a dump, HS sent me a replacement stock. The original action screws were a tad short and the replacements screws were too long (hs ships new action screws with their stocks).

There should be a mark on the bolt lug if the screw is too long.

If unsure:

Take a marker or paint and coat the top of the front screw, reassemble the gun and work the bolt, if the paint is in the bolt or paint is missing from the screw then the lugs are making contact with the front action screw.

Brass looks fine. Is there any galling/wear on the bolt lugs on the back side of lugs? Might be as simple as a lack of lube or a rough mating surface for the lugs.
 
As said above, I've had to shorten plenty or rem700 action screws when swapping stocks.

If they are too long they interfere with the bolt and definately make the action hard to open