Gunsmithing FN PBR (CRF) and Hinged Floorplate

[PBWalsh]

Hello,

Just got in an FN PBR action (CRF, old style 2 lever trigger) with an SPR A3G bedded stock (MCM A3) and a hinged floorplate.

When the action and bottom metal only are installed, everything locks up as it should.

When I take it apart to put incthe internal box magazine, the rifle will not fit back together.

Would anyone know why this might be happening? Reached out to FNH and they said they’d have to get back to me.

Is the back portion of the box supposed to have a slight curve outward?

Small clearance issue?

Thanks!

 

[PBWalsh]

Bent the part of the box back in and all was able to be put together as it should.

 

[wapiti16b]

What is your coal for that magazine ?

 

[PBWalsh]

I’ll try to remember to check in the morning after work.

 

[PBWalsh]

What is your coal for that magazine ?

I’ve got 2.965 COAL measured on iffy Frankford Arsenal digital calipers.

 

[wapiti16b]

So, I've got the same mag and with my dial calipers and 5 measurements each I came up with 2.845 for the max coal with the binder/feed lip plate and 3.10 without the binder feed lip plate , God I hope I can remove the feed lip binder and still get reliable feeding !
My FNH TBM&MAGS measures 2.90 max and my reliable feeding rounds measure 2.888 coal.
My calipers are dial and about in the middle of price and accuracy according to a machinist friend of mines opinion.
I hope this helps !

 

[PBWalsh]

I’ll see if I can measure it again.

 

[wapiti16b]

Does anyone know if the removal of the binder /feed plate at the rear of the WIN floorplate magazine for the PBR will adversly effect bolt function and feeding ?

Hello,

Just got in an FN PBR action (CRF, old style 2 lever trigger) with an SPR A3G bedded stock (MCM A3) and a hinged floorplate.

When the action and bottom metal only are installed, everything locks up as it should.

When I take it apart to put incthe internal box magazine, the rifle will not fit back together.

Would anyone know why this might be happening? Reached out to FNH and they said they’d have to get back to me.

Is the back portion of the box supposed to have a slight curve outward?View attachment 6996351


Small clearance issue?View attachment 6996353

Thanks!

 

[PBWalsh]

I’ve read of folks doing that. I’ll ask LRI to do the same whenever I can send it to them.

 

[AccuSol-ERN]

You may have to trim some length off the front edge of the bolt release lever (it also limits bolt travel rearward) to allow the bolt nose to come back far enough to pick up the next round. Very easy mod and a great way to add COAL length in these actions.

 

[wapiti16b]

fng23, do you have any information about trimming the fe of the bolt release. How much to trim and the exact location of the trim, some pictures would be great!
Thanks!

 

[AccuSol-ERN]

It should be pretty easy.

If you fancy yourself mechanically inclined at all, you should be able to figure it out.

Before any "cutting" make sure that it looks doable and will function appropriately after cutting.

Worst case scenario......you dick it up beyond repair......order another bolt release lever and install it...….back to normal.