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-   -   BAM the Koejak .25 (http://airgunsforum.org/showthread.php?t=549)

Badmoets 03-31-2017 10:40 PM

BAM the Koejak .25
 
Hiya,

some time ago a friend from Belgium asked me if i wanted an defect BAM B50, the BAM consisted of a bag of parts and offcourse i wanted the mortal remains of the BAM. He sent it to me. I discovered the BAM on the Dutch Airgunboard. A well known HFT shooter bought it and fitted the Daystate stock. I had it in the gun vault for some time.

Like i said,the BAM action had a Daystate stock. Great. I like that.
http://i.imgur.com/8K3lS7Z.jpg
Last summer i made a new valve for the gun and i decided to put the Hatsan .25 barrel i had lying around in it. I bought the Hatsan barrel for some 50 dollar.THe Hatsan barrel is quite a bit longer than the BAM barrel. I heated the breech with the barrel and it came out pretty easy.
http://i.imgur.com/S1OSnVF.jpg

The Hatsan transfer port didn`t match but since i`ve got a lathe that`s no problem.
http://i.imgur.com/eDXbnxz.jpg

The diameter of the Hatsan barrel was 11 mm, the BAM breech asks for 12,6 mm. I reduced the diameter of the Hatsan barrel to some 10 mm and made a bushing to get to that 12,6 mm. I had a piece of Cometa barrel in my drawer and i made the bushing af that piece of barrel. No better material to make a barrel bushing of than a barrel doncha agree?
http://i.imgur.com/ThE91Hh.jpg

The cheap ass Chink lathe working like a madman.
http://i.imgur.com/R81GEuF.jpg

See if it fits.
http://i.imgur.com/Aa7xox5.jpg

To be continued......

Badmoets 03-31-2017 11:08 PM

the Koejak
 
Oi,

since the BAM was a .22 the probe is a .22 too. Luckily i found a probe that i seemed to have for some with a bigger diameter on the front end. I`ve got lotsa o rings and because the diameter of the probe is larger there`s no problem to air tighten the barrel. I used a reamer to modify the breech a bit so the pellets would chamber without too much hassle. In the end it worked fine.
http://i.imgur.com/rN2HeaX.jpg

http://i.imgur.com/RFtnx5O.jpg

Next thing is to drill and thread the breech so the barrel can be placed.
http://i.imgur.com/90UfzUZ.jpg

I don`t like barrel bands but because of the length of the barrel i thought i had to use one. So i took something off of the outer diameter of the barrel to make the barrel band fit.
http://i.imgur.com/EZLirc3.jpg

Eventually the barrel band fitted.
http://i.imgur.com/ezjG0xo.jpg

I put the gun together, bought a cheap ass scope (60 euro`s) and took it to the range.
Me and four other guys made our own shooting club, we`ve got a 100 meter indoor track. It`s dirty, it is moist and cold and dark and sinister but we don`t give a hoot. It`s our dirty, moist, cold and dark and sinister shooting range. We`re pleased with it.
For two or three weeks i shot the Koejak on the 50 meter track, it didn`t do too bad, groups were some 2". Not too bad for a $110 gun innit? At the 100 meter track it wasn`t all that good. I didn`t mind, this gun was made for the 50 meters. Untill i took the barrel band off and hopped over to the 100 meter track.
http://i.imgur.com/oGeoB0U.jpg

http://i.imgur.com/KJDrWS9.jpg

http://i230.photobucket.com/albums/e...pshtwv1geg.jpg

Time after time the Koejak scores great.
http://i230.photobucket.com/albums/e...psah0plwlt.jpg

Shoots like a $1500 gun. This one costed 110 bucks. 111 bcks since there`s a dead moon sticker on the stock.

What`s a Koejak? I hear ya mutter. It`s 'kloatsek' Frysian for nutsack -like asshole- by my three year old grandson.

Take care.

Roel

grumpy 04-01-2017 03:11 AM

Holy cow. Great write up my friend. That is one heck of a shooter you have there for so little money !!

Dave

Jward681 04-01-2017 03:21 AM

Roel that's a great write up and pictures you've shared. Even better that you turned such a pile of parts and small sum of money into a fantastic shooter. Can't wait to see more of your collection and adventures in your "dirty, moist, cold and dark and sinister shooting range. "

Clifford 04-01-2017 12:28 PM

Very nice results. I gotta say, I'm really impressed with the accuracy outta that thing. Good work.

Badmoets 04-09-2017 07:15 PM

Dirty, moist, sinister, cold and dark. Like i said.

http://i.imgur.com/etAo4aM.jpg

http://i.imgur.com/8HFuoQ8.jpg

http://i.imgur.com/inBnU1Q.jpg

But sometimes it looks like this. Dry, warm, less dark but still dirty.
http://i.imgur.com/kbDNQKL.jpg

Best.

Roel


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