Bedding aluminum chassis

theBuilder

theBuilder

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So, i made a mistake- i bought a mossberg rifle. I just picked up a fairly well used mvp lc in the mdt lss chassis chambered in .308.

Got the scope on paper at 25m, shot one 5 shot hole as expected, bumped over to 75m, and the target looked like a couple rounds of buckshot were let loose by someone paying marginal attention to the direction their shotgun was pointing.

I tried hirtenberger, and two of my different handloads.

Long story short, i checked the usual culprits, action screw torque, scope rings/mounts, etc. I took the action out of the chassis and noticed some inconsistent rubbing on the action/chassis.

I would like to try no stress bedding the action/recoil lug to the chassis, but ive never done any bedding at all. Really looking for any pointers/videos/instructions.

On a side note, does anyone know of a manufacturer of replacement barrels for the mvp series? I am bound and determined to make this thing a shooter. Any help is appreciated.
 
There are a couple of threads floating around on here about how to bed a rifle, with devcon, and other products.
MidwayUSA, Gunblue490, Panhandle Precision, and a few others have good vidya's on the youtube on how to bed rifles.

I don't think anyone makes Mossberg prefits, but I have read that some savage prefits will fit (as in they have the same thread), but the length of the receiver threads and bolt face recess are not quite the same. So a smith would be required, from my understanding.
 
Would the process for bedding be the same for a chassis? I wasn't sure. I was also weary about where exactly bedding should be done, and where it should not be done. Thanks for the reply
 
Dont expect bedding the action to make a difference.

If its printing shotgun parterns at 75 yrds. And its isnt the shooter


The rifle is a lemon and bedding wont help
 
AFAIK the process is similar. ht tp://forum.snipershide.com/threads/mdt-chassis-bedding.6715028/

The Chassis should be good, I believe I read that they are made by MDT (they don't suck).

One of the reviews I have seen suggests they like lighter bullets, but every firearm is different.
 
If it’s in an MDT chassis and doesn’t shoot okay, I can’t see it being a bedding issue.

I don’t think bedding it will help any. You probably need a better barrel or different rifle.
 
You're shooting a Mossberg with surplus ammo and handloads for other rifles, can't say I am surprised it's shooting like s**t. Unless the action is looser than Trudeau's ethics, bedding it won't help.
 
A friend of mine had a Mossberg Patriot in 308. Didn’t matter what ammo he did, the thing wouldn’t shoot any better than 10-14 inch groups at 100 yards, it was absolutely crap. He traded it in for a Tikka at Bass Pro. He is much happier with the Tikka. He can actually shoot a beer can at 200 yards now hahaha. I don’t think bedding Your rifle will help. You will likely be better off buying a better rifle.
 
Well, i took it all apart yesterday, scrubbed the hell out of the bore and bolt, re oiled, re assembled, and tightened everything up. Ill see if i can get out this weekend to see if there is a difference. I have afew different flavours of factory match ammo to try. I'll see how it goes.

I knew better than to buy a mossberg...
 
Sorry, if this makes some unhappy but skim bedding may very well be needed to ensure the action is not bent/stressed during install. Simple test... tighten the front action bolt with the rear loose... tighten the rear with your hand over the action. Can you feel any movement? Sometimes, you can see the rear lift off the chassis when the front bolt it tightened.. that's bad.

Reverse with tight rear and then tighten front... any movement is bad.

If you see wear lines in the cerakote and/or action bottom, things are moving. Best is when you get a pile of dust fall out of the chassis crevices when you take it apart. Any oil in the bedding will also cause all sorts of grief on target... leave the bedding and action dry.

Once the action is bedded and unstressed, the big problem will be the quality of the barrel, how much wear is in the barrel, how well your ammo fits the barrel harmonics.

If the action operates properly.... pull trigger, and ammo goes bang.... you can get it to work to the limits of the barrel. It may not be sub MOA, but I would expect with proper handloads, decent bullets, it will be less then 2 MOA. Otherwise, the barrel is really crap, or worn out. Watch barrel heat.. most factory barrels warp as they heat up and it may only be 2 or 3 rds before it start to walk... still crap but at least manageable.

A worn firing pin spring can really cause headaches on accuracy but you will also see hangfires (click.. wait... then bang) or misfires (click... no bang.. with a light primer strike).

Not saying you are going have a BR winning rifle but it is really hard to make stuff that isn't MOA'ish these days.

Good luck.

Jerry
 
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