Gunsmithing Are pillars really needed in a McMillan?

sr15match

Lost........
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Minuteman
Nov 6, 2008
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Wellsville, NY
I have a new McM stock that came without pillars but I have a set on order.

If the action is bedded and the floorplate is also bedded (Devcon Steel-putty) are pillars really needed?

Just wondering.

Todd
 
Re: Are pillars really needed in a McMillan?

treebasher, checked out the link and read the results.

I'll probably end up installing the pillars but I'm wondering on how many folks have just bedded and run with it skipping the pillars all together.

I already bedded the floorplate. Had to open it up a hair and make a little mod so the Williams floorplate would set the way I wanted it to andit got me thinking was all. Just bed th action and don't look back?
 
Re: Are pillars really needed in a McMillan?

Yes you need to pillar bed it. If not you will crush the stock and ruin it and your accuracy will suffer. And you will bitch and moan that my rifle sucks, and the scope moves, eliminate all varibles as stated so many times here and elsewhere.
Because you will not have a stable plane for the stock and action to be one. Think of bedding a rifle akin to a foundation to the house, if its lacking the house moves and floats away.
I hope I made my point I am getting tired of the same posts time and time again and the same answer is YES......
 
Re: Are pillars really needed in a McMillan?

I am still shooting my A3 without pillars or bedding and it will out shoot me and other members can one hit wonder it once dialed to conditions.

I got it used and the other guy shot F-class in it and never bedded it or pillars.

I am scared to bed it or run pillars because it might FUBAR how it is shooting now!!! I have had it out and back together many times as well and always torque back to 65 in lbs.....could be a fluke or just that I can't notice the difference out at 1000 yards.

But elminating any possiblity of inconsistancy is a good thing.
 
Re: Are pillars really needed in a McMillan?

If the stock is sniper fill you don't really need pillars. The stock fill is strong enough to support the torque without pillars

If the stock is standard or light fill you can bed it without aluminum pillars but I recommend counter boring the holes allow bedding material to create in essences a bedding material pillar in the stock. If you do this you might as well install aluminum pillars.

You are always in danger of compressing standard or light fill stocks depending on what you torque your action screws to.

If you have a poor fit between barreled action and stock then bedding will almost always be needed. McMillan stocks and the FN-SPR were famous for this.

If your rifle is shooting well enough without bedding then it's up to you but bedding is not just for added strength. The action and stock are never a perfect match, the bedding forms to the stock and the action to make a perfect matching surface. This removes any uneven surface contact that can create stress. This will also allow the barreled action to return to the same place once removed and put back in.

So is it always needed? No. Is it recommended? Yes.
 
Re: Are pillars really needed in a McMillan?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: HateCA</div><div class="ubbcode-body">If the stock is sniper fill you don't really need pillars. The stock fill is strong enough to support the torque without pillars

If the stock is standard or light fill you can bed it without aluminum pillars but I recommend counter boring the holes allow bedding material to create in essences a bedding material pillar in the stock. If you do this you might as well install aluminum pillars.

You are always in danger of compressing standard or light fill stocks depending on what you torque your action screws to.

If you have a poor fit between barreled action and stock then bedding will almost always be needed. McMillan stocks and the FN-SPR were famous for this.

If your rifle is shooting well enough without bedding then it's up to you but bedding is not just for added strength. The action and stock are never a perfect match, the bedding forms to the stock and the action to make a perfect matching surface. This removes any uneven surface contact that can create stress. This will also allow the barreled action to return to the same place once removed and put back in.

So is it always needed? No. Is it recommended? Yes.
</div></div>

This is one of the best answers I have gotten. Like many things there is always the "need vs recommend".

As it's a new stock I don't know how it'll shoot if no pillars are installed. With a pair on order they will be installed anyway.

The stock does have sniper fill though. I didn't know the was actually a harder compound and less likely to give or crush over time.

But for the time it takes (not a lot) and the peace of mind that comes from it all, the pillars will be set in place when I bed the action.
 
Re: Are pillars really needed in a McMillan?

Pillars will prevent compression of the rifle stock from the constant pressure between the receiver and bottom metal. Over time and with constant pressure and repeated firings, even magnum/sniper fill will compress slightly. Granted, we're talking about a Fiberglass McMillan Stock, IMO, the best there is. With that being said, I'd never let a rifle go out that wasn’t pillar bedded, why chance it over something as small as pillars.

I've never seen a good bedding job with pillars degrade accuracy although I have seen it drastically improve accuracy
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