B-square mounts

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  • Last Post 20 December 2019
John Carlson posted this 13 December 2019

I just purchased (for grins and giggles) a B-square scope mount for the 1903A3.  Discovered some impediments to it's usage.

This mount uses the magazine cutoff mounting hardware.  Just remove the magazine cutoff lever and install the mount in it's place.  Discovered immediately that the mount would prohibit the removal of the bolt unless I first removed the mount.  A few minutes of precision machine work modified the mount sufficiently to remedy this problem.  

The mount uses 2 set screws, located on the top, one forward of the magazine cutoff mounting point, one behind it.  The front one is supposed to line up with the ejector pivot pin, the rear is supposed to line up with the upper detent which holds the cutoff lever  in position.  Neither of these set screws could line in the proper position.  Again, a bit of precision machine work resolved the problem.  

Now the mount could be installed and the scope added.  There are 2 more set screws that provide for elevation adjustment.  There is no adjustment for windage.  I use a laser cartridge to boresight.  The maximum windage adjustment on the scope would not quite bring the laser dot in line with the vertical crosshair.  Haven't yet figured out just what kind of precision mancine work will be required to correct this (hopefully) last problem.

No problem, I'll just call them.  Yeah, right.  Trying to contact b-square gets me to a web site for Safariland.  There is an 800 number which gets me to a Verizon recording, "the number you dialed cannot be reached".

Just wondered what kind of experiences others may have had.

John Carlson. CBA Director of Military Competition.

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RicinYakima posted this 13 December 2019

It was exactly the same 20 years ago. Never recommended anything B-square since. They are the bottom of the barrel stuff for people who don't know any better. Ric

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Bud Hyett posted this 13 December 2019

 

Now the mount could be installed and the scope added.  There are 2 more set screws that provide for elevation adjustment.  There is no adjustment for windage.  I use a laser cartridge to boresight.  The maximum windage adjustment on the scope would not quite bring the laser dot in line with the vertical crosshair.  Haven't yet figured out just what kind of precision machine work will be required to correct this (hopefully) last problem.".

If you persist in this endeavor, the Burris Signature rings with inserts have helped me several times. I've used them to bring a scope back to center so one has the full range of adjustment. An extreme case was a Browning 1885 in .45-70 with a Redfield 3200 that used the maximum .020 offset, but was salvaged.

I agree with Ric, B-Square is to be avoided. The only product I've seen from them that was usable, correctly made, and durable is their front rest. There was an occasional shooter at Windhill when I still lived in Illinois who touted B-Square by showing all the modifications he made to make their product usable. Not the best endorsement.  

 

Farm boy from Illinois, living in the magical Pacific Northwest

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M3 Mitch posted this 13 December 2019

Thanks, gents, for the harsh but useful analysis of B-Square.  I have more rifles with peep sights than scopes, but, will keep this in mind.

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John Carlson posted this 14 December 2019

Since I'm obviously not going to get $40 worth of use out of this thing, I will endeavor to ger $40 worth of entertainment out of making it kind of work.  A bit more machine work to add a set screw with which to adjust the windage should help to waste a wee bit of another long winter day.  Hate to think I may actually take this out and shoot with if some day.  Hmmmmmmmmmm.

John Carlson. CBA Director of Military Competition.

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Ken Campbell Iowa posted this 14 December 2019

...  a Precision File is a great tool to fix UnPrecision mechanisms ... cool

... also, a Precision torch can heat an UnPrecision piece cherry red, and then a Precision Hammer can turn the piece into a Precision piece again ... then after you have discolored it, polish it up and heat it gently to a very pretty shiny blue ...

.... there is a certain wonderful satisfaction in using BruteForce to fix certain problems ...  

ken

Precision Edit: ... oh,  i see those are aluminum .. neglect the torch and hammer idea .. also, just to add salt to the wound ::  Midway says they are discontinued ....  oh, they also say they have outstanding customer service ....  

 

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delmarskid posted this 16 December 2019

I have a b-square mount for my Dan Wesson . I may change over to hose clamps and bits of cedar shingles.

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John Carlson posted this 16 December 2019

One last session in the shop (which is equipped with a fridge) resulted in drilling/tapping a new hole which accommodates a set screw which adjusts the windage.  Along with the other modifications I think I now have a mount which should hold a scope solidly in place as long as the gun stays in the rack.  More rigorous testing will have to wait for spring.

Figuring labor at the rates usually expected for an aircraft commander with 30 years experience I have probably around $800 invested.  God winter is fundrained

John Carlson. CBA Director of Military Competition.

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RicinYakima posted this 16 December 2019

John, Once you retire your wage rate is: "He's retired and has nothing to do. He'll do it for free!"

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John Carlson posted this 17 December 2019

That's a fact.  I learned the secret a bit late:  When you retire..............DON'T TELL ANY BODY!

John Carlson. CBA Director of Military Competition.

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Bud Hyett posted this 19 December 2019

Retired, who me? I have learned this lesson too late.

My whole desire in retirement was to become a casting and range DABRAT; this being short circuited by remodeling the house and hardly any room in the present shed to move about. 

Retirement should be a closely guarded secret. 

Farm boy from Illinois, living in the magical Pacific Northwest

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mashburn posted this 20 December 2019

Hello all of you B-Square anti-fans,

Gosh, I like funny posts. Congratulations to all of you guys for your sense of humor.

Bye the way, I've had some disappointing experiences in past years with B-Square junk but I solved all of them, I have  junked the very few items with their name on them. The most aggravating experience was with a little M1 carbine. I tried to shoot a buck in the throat at quite a long distance, yes I missed (that don't happen much to me) and the deer jumped 3 or 4 jumps and turned around looking at me, standing dead still. I took steady aim and squeezed the trigger. Nothing happened. The B-Square scope base had deflected the empty case straight down in to the action and jammed the rifle. Needless to say The buck didn't stay while I pulled the bolt back and dumped out the empty case and chambered another round. I found out that the scope base would deflect about 5 out of 10 fired cases down into the action.

Mashburn

David a. Cogburn

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