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Bear creek bolt action AR

Know to see it in the AR-10 for better and bigger calibers. Thanks for the post, the straight cam pin makes sense and should be a little easier to make.
 
I can't tell from the pictures or the description, is there any primary extraction ? If not that could be interesting with some cartridges.
 
Bob Mo said:
Just got it today. Switched the barrel to a 300 blackout, standard barrels and bolts work. The upper came with a sleeve to close off the gas port. Have not fired it yet. Will let you all know how it goes tomorrow. Tried to load pictures but it didn't work
Click to expand...
If you wanna text me the pictures I can post them for you
 
Tail Piece on bolt fits in precision hole in Carrier.
Spring presses on the carrier and ring flange on bolt.
Explained on the BCA site.

I see no "Primary Extraction" just Bolt Rotation with the handle instead of a Carrier Ramp.
BCA-Bolt.jpg
With my No-Gas Side Charger I had to use a thin screwdriver to break the bolt loose.
Pulling the side handle sometimes wasn't enough. Once the bolt broke free it would extract.
For a 3X20 F-Class match I would start to get stickage 30-40 rounds in. I started using flexible swab every 20 rounds or so and that would usually take care of it.

Maybe bolt rotation will be enough.
 
Last edited:
Rocketvapor said:
Tail Piece on bolt fits in precision hole in Carrier.
Spring presses on the carrier and ring flange on bolt.
Explained on the BCA site.

I see no "Primary Extraction" just Bolt Rotation with the handle instead of a Carrier Ramp.
View attachment 1616432
With my No-Gas Side Charger I had to use a thin screwdriver to break the bolt loose.
Pulling the side handle sometimes wasn't enough. Once the bolt broke free it would extract.
For a 3X20 F-Class match I would start to get stickage 30-40 rounds in. I started using flexible swab every 20 rounds or so and that would usually take care of it.

Maybe bolt rotation will be enough.
Click to expand...
That was my concern with that setup
Case extraction with no primary extraction.
 
Mike Powers said:
Spring retracts the firing pin
Click to expand...
There is no spring on an AR firing pin. I believe that it is there to put resistance on the bolt handle likely helping to keep the weapon in battery otherwise the handles leverage would easily rotate the internal bolt out of its lug positions. The bolt itself uses rings on the rear and a small band closer to the bolt face to center it within the bolt bore in the BCG. Without the rings, it will stay alined enough and have a slight amount of movement similar to a savage “floating” bolt head.
 
Darn! Wondering if there’s just enough radius in the upper right corner of the ejection port opening to provide just a smidge bit of primary extraction with the design of the bolt handle boss ?
 
Ok so imma go ahead and sound like the uneducated swine here.....somone mind explaining primary extraction to me ?
 
Wolfdog91 said:
Ok so imma go ahead and sound like the uneducated swine here.....somone mind explaining primary extraction to me ?
Click to expand...
Primary extraction is where turning the bolt body against a ramp or cam will start to extract the case from the chamber. Otherwise it can be difficult to "break the case loose"

It is a hard to explain topic and there are more opinions than people. Also can fall into the "timing" of the bolt. Although I believe that is usually referring to the relationship between the bolt cocking piece and the trigger and the locking ramp.
 
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