I just got a Boretech guide for the B14R. It has a slot cut out for the ejector. It works great and supports a 22 cal rod. Highly recommend.

 

Precision Quest Products makes a good one. Looks like they are currently out of stock. Very well made and they just work.

 

I use an L3i bore guide at the range, it's shorter and packs easier than the one I keep at home, which is longer. My home bore guide is a Boretech which is nice too, just longer.
I'd recommend taking a look at either and see which one suits your needs best.

 

I have a Possum Hollow, if whatever you have is made for a B-14R there should be a groove for the ejector, rotate it till it fully inserts.
If are using a universal or center fire guide then that's as far as it will go.

 

I got the L3i, it was around $25, they are RT or LH specific. I needed the LH. They look to be 3D printed but do the job fine. I didn't like that it didn't lock into the action but that was an easy fix.

Much cheaper than the one I had to buy for my Vudoo. 360.

 

I guess I should have known there are center fire and rim fire bore guides? Thanks for the replies.