Gunsmithing Badger EFR ID "Enlargement"

[Duc]

Has anyone tried or thought of a way to increase the interior diameter of a Badger EFR AFTER it was installed in the stock? Badger measures 1.194+-, barrel measures 1.173. I have another Rifle with an EFR that the barrel measures at 1.125 and that has a more adequate clearance. The .21 just seem too tight of a fit.
I ask only because I have a finished barreled action ready for this stock.
I know that the barrel could be turned down, but the Rifle shoots so good I'd hate too diassemble/change parts now.

Thanks, Duc

 

[psmith]

Re: Badger EFR ID "Enlargement"

Mark @ Short Action Customs installed mine and it has enough clearance with my M40 profile, but I can see anything bigger might not. I'm guessing that you can try putting it in a mill if you need a bunch of clearance or you could try the backyard way of wrapping sandpaper on a dowel then clamping both pieces together and removing some material that way.

 

[Raven 6]

Re: Badger EFR ID "Enlargement"

Is the pice you bedded in the stock flush with the barrel channel, as in you can't cut the bottom piece of the EFR without cutting the stock? If it's flush you could use a ball nose endmill and cut some out of the bottom of the top piece, but not much. What is the gap between the barrel and the bottom pice when barreled action is in the stock and bolted in? I've had to make this mod several times that's why I ask these questions.

 

[jackinfl]

Re: Badger EFR ID "Enlargement"

How about a spacer between the top and bottom?

 

[468shot]

Re: Badger EFR ID "Enlargement"

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: jackinfl</div><div class="ubbcode-body">How about a spacer between the top and bottom?</div></div>

This would yield more clearance vertically, but none on the horizontal axis. I think the op's goal here is to gain total diameter clearance.

If it were mine, I would just have the barrel turned down since the EFR is already bedded into the stock. I understand your hesitation in doing this to a proven shooter, but it might be the best option.

 

[jasonixo]

Re: Badger EFR ID "Enlargement"

If the stock assembly can be held securely, or the EFR can be assemble tightly and mounted on a lathe via the rail, the hole can be line-bored or bored with a boring bar between centers.

see the following:

Fig. 180

A more modern approach would be to 3d the inside of each half on a CNC mill.

 

[Terry Cross]

Re: Badger EFR ID "Enlargement"

I would not recommend opening up the I.D. of the Badger or any other similar design mount.

I can assure you that Badger as well as the others designed the biggest I.D. hole they could and still have the complete unit fit most conventional forends. This means that the design is pretty lean in that dimension already.

First thing is that you will machine through the hardcoat anodizing. Second thing is that you will start getting things really thin where the I.D. approaches the 6 assembly screws. Third thing is bringing the I.D. closer to the bottom of the 1913 rail bottom will get very thin at that corner and invite cracks there.

Bottom line is that yes, it can be done but in my opinion should not be.

If you have the EFR on there to actually put a PVS-22 or 27 on, do you really want to risk your $8-10K unit on a mount breaking?

Good luck with your project either way.
Terry