Gunsmithing Adhesive bonding of the receiver to the stock

[Schleifalot]

Hello folks,
last week I took my Tikka T3 (308 win) out of the Roedale RCS chassis stock for inspection and a thorough cleaning.
The RCS is nearly identical to the AISC, different inlet for the T3.
After removing the receiver from the chassis I noticed some smooth spots on the chassis where the receiver touches the alu surface.
A little play maybe?

IIRC AI does adhesive bond the receiver to the stock in the AE series.
In a book about benchrest shooting I read that such bonding is good for precision.

My question:
Does epoxy bonding the receiver to the chassis increase stability and therefore precision? Or is this nonsense and could lead to warping and shifting POI while the rifle gets warm during shooting?

 

[DAVETOOLEY]

Re: Adhesive bonding of the receiver to the stock

AI bonded their AW and currently their AX model to the chassis. The first BR actions were glued into wood stocks before the advent of fiberglass to eliminate bedding issues and at the time we had no custom made single shot actions other than the 40X and XP-100 so a lot of 700's got glued in. I started in the point blank world and more than anything else glueing in a receiver allowed even the novice to do a good job of it. Would glueing in your action help, probably not.

What does the target tell you?

 

[Schleifalot]

Re: Adhesive bonding of the receiver to the stock


Mostly I can shoot about 1/2 to 3/4 MOA at 100m with flyers.
At 300m it is 3/4 to 1 MOA with flyers.
The flyers are caused by the hamfist behind the rifle, I think.

More than 300m are extremely rare over here.

Just going out the backjard and ringing steel out to 1000m, that alone could be a reason for emigration...

 

[ejg]

Re: Adhesive bonding of the receiver to the stock

To try out if bedding might benefit you could try the following. Apply release wax to stock and action, do a light skimm bedding and remove all excess material right away. Tighten action screws to 75% of what you would normally tighten to. After the resin has set tighten to 100% torque value and go shooting. If no improvement is noticed you can reverse by removing the action from the stock you can peel away all epoxy ...and you are back to what you had.
edi

 

[Schleifalot]

Re: Adhesive bonding of the receiver to the stock

Thanks Edi, that sounds like a good compromise.

 

[ejg]

Re: Adhesive bonding of the receiver to the stock

Let us know how the outcome is.
I am typing very slow because I see you are from Bavaria

edi

 

[Schleifalot]

Re: Adhesive bonding of the receiver to the stock

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: edi</div><div class="ubbcode-body">
I am typing very slow
edi </div></div>

Been at the booze again??

Usually I drink beer, but it is dangerous. In beer are female hormones. After some brewskis I talk nonsense and have to sit down to take a leak.

Next week I will try your skim bedding tip.

 

[Schleifalot]

Re: Adhesive bonding of the receiver to the stock


Skim bedding is done. This saturday I will go at my range for some shooting, but only 100m. I'm courious if there will be a difference noticeable.

By the way, I try typing faster for you edi ;o)

 

[Schleifalot]

Re: Adhesive bonding of the receiver to the stock


Yesterday I went to my range.
In short, still about 1/2 to 3/4 MOA @ 100m.
Maybe the groups are a little more consistent.
Now I have to work on my fliers.

The skim bedding was intended to remove some very little play between chassis and receiver. A noticeable increase in accuracy was not to be expected.
For testing I shot 40 rounds in about 20 minutes. There was no shift in POI. Two 5 round groups at about 1/2 MOA and two fifteen round groups at about 1,2 MOA. Mirage and the damned Gauss bell function (statistics) at work ;o)