Bedding a Bergara Sierra (plastic stock)

If you don't machine or epoxy in a metal rod to strengthen the forend... you can expect the stock to still flex under pressure (you can easily pinch the stock and barrel together by hand and make them touch).

This may not affect accuracy as much as one might think (but it also can a lot as well, no guarantees). However, your POI is going to shift when you do things like shoot from a bipod, then over a bag... or shoot from a bipod with no load vs loaded. It will be really no different than just shooting with a plastic stock in the first place.

The same twisting of your stock that allowed the bedding to break on your CTR is still going to be in effect here.

So if it were me, I'd really only either 1) not worry about it, or 2) just do the recoil lug.

YMMV, and if you get great results, please update and tag me. I hope it works out for you.

My direct experience with a Bergara Sierra 7PRC would be to bed it in your trash pickup container for best results.

Jayjay1 said:

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Why do you only recommend doing the recoil lug, because of the possible twist of the stock?

Click to expand...

Yes. Anything short of milling out the forend and placing metal support in there is still going to result in a stock forend that will flex. Really, it is the same with the wrist of the stock too.

The result is that every time you put yourself in a different position, there will be a change in force exerted on your action (and possibly even barrel contact)... causing some degree of change to your POI.

Just doing the lug is a minimum investment in time, and may at least help with more consistent force against it.

I'm not saying that you shouldn't spend your time and money the way you want. I am however saying that this is an endeavor where the greater the effort, the greater the frustration exists. It is just my opinion, and based on after having played with factory 700 stocks many years ago, and why about 20 years ago I made the switch to companies like McMillan and Manners.