Well, I warned you! Surgery has occurred on the BSA SuperTen MKIII .22

Forums PCP Airguns Well, I warned you! Surgery has occurred on the BSA SuperTen MKIII .22

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    Crank
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    I put this BSA up a while back on the classifieds since it was languishing unused in the gun safe. I warned people that if it didn't sell, I was going to do something drastic,,,,it didn't sell.

    So here I now present to you the BSA SuperTen MKIII "Carbine" in .22cal. with a 250mm barrel and shroud shortened accordingly. I also re-purposed a baffle unit that I had made for testing on another air rifle and does a much better job in this one. It's pressed in place so I unfortunately did not photograph it before I installed it in the shroud tube.

     

    The velocity actually crept up to around 830fps, but I was very pleased that I hadn't lost too much velocity. IIRC, I was around 870fps before the surgery (it's been quite a while since I last chonographed it) Since the picture, I refaced the end of the shroud and hit it with some matte black paint, so it looks better now. I will hold all of you responsible for my actions, since no one wanted to buy it. Now I will look forward to a session at the range and see how she shoots. 

    Enjoy!

    Mark

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    Matt247365
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    Nice one Mark! Shorter the better? Looks pretty cool at that length.

    Matt

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    Crank
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    Matt,

    Thanks for the compliment. I was sick for the tail end of the week and was getting antsy sitting around the house, so I wandered into the garage/shop and the lathe cried out for a sacrifice. I willingly complied. It only took about 10 minutes to strip the barrel out of the gun and another 30 minutes to shorten the barrel, re-crown it and then shorten the shroud. Even fiddling around with installing the baffle, filling the bottles and reassembly, I had about 2 hours invested into it total. The funny part was the baffle unit I had made didn't make any improvement in my Artemis P15, but it significantly reduced the sound signature on the BSA. My phone app for a decibel meter pegs this at 82db. I have always had an affinity for short rifles and I know that BSA made one similar, but never saw one in the flesh, so I made my own.

    It helps when your garage is, for all practical purposes, a machine shop ?

    Mark

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    Eaglebeak
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    You said that you recrowned the barrel. I assume that you removed the choked end. It will be interesting to see what effect that has on accuracy and consistency.

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    Crank
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    Same here. I knew it might be an issue, but it will wait to be seen.

    Mark

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    badammo
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    Mark, great job. Now that you removed the choke maybe you could try some slugs. Of xourse you will most likely have to increase the power a bit for that. Just a thought and another rabbit hole to go down. Have fun

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    douger
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    love the look of the shroud bet its quiet 

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    Crank
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    douger,

    My milled air-stripper/baffle assembly, did hush it down a bit compared to the plastic baffles with springs. This one now is about as quiet as my EDgun R5M (81db). I'm happy with how it sounds, occasional use pesting around the house won't be a deal breaker.

    Mark

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    Crank
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    Well, got to the range yesterday and other than reminding myself why I have a quick fill adapter ordered, it's a winner! Got the scope on target quickly, just as the wind was picking up, but even with wind it was keeping the groups around 1/2" at 50yds. I was very happy with it's performance and I'm certain that accuracy improved considerably. That was part of the reason I hadn't shot it much, the accuracy wasn't horrible, just not something I could count on for a "minute of squirrel" at 50yds. My buddy was watching my groups and he kept saying "dead squirrel". The only annoyance was the bolt handle kept coming loose and the knob is pretty small, so I think a custom oversize knob and a bit of Loctite should address that problem. Time to fire up the lathe!

     

    Mark

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    spysir
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    I very much like the looks of that. Rather reminds me of a friends pifle or ristol which was a custom Theoben pistol in a rifle stock.

    I remember seeing the ad , glad you kept/modified & shared the pics.

    Not at all what youve done but yesterday I dropped an old QB in the Gauntlet stock to make a shorty, need to pull a scope for it today.

    I dont really care for bullpupos but short rifles/carbines handle so well in the Woods.

     

    John

     

     

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    Crank
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    John,

    That looks intriguing, will the stock need to be relieved or filled to fit? It should make for a fast handling rifle.

    I'm trying to envision what a Theoben pistol would look like??? I have seen a Rapid that was turned into a pistol, that was one probably would have looked better in a stock, but I can't call the kettle black.

    Mark

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    nomojo65
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    Nice Job!, let us know if you do try slugs?, Hey, bet it would sell now…

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    Crank
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    nomojo65,

    I don't see this one being a slug shooter, because I most likely won't mess with trying for more power. As for selling, not going to happen, the chance was there before I chopped it.

    My Dr. Bob's parts will be here tomorrow, so the next investment will be getting installed after work when the nice postman delivers a package. I will have to machine some wood away to get it installed, that's the only nerve wracking part. Wood and I are not the best of friends, so I will expect it to try and get troublesome.

    Mark

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    airgunmonkey
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    Nice looking rig

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    spysir
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    Crank,

    I cant find a picture of it in the rifle stock, I'm sure you can envision it dropped in an MFR or such stock.

    Makes a darn handy rifle too.

    At 50 yards it's all 10's if the shooter can.

    John

     

     

    John

     

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    Crank
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    John,

    As much as I love short rifles, I'm not sure if I would have done that myself. Having the power that the longer barrel makes in .25 would be hard to give up on mine. It must be a barker without an LDC. The workmanship looks well executed and if the owner is happy with it then who am I to judge. Thinking about it more, if it were a .177 or .22, it starts to make more sense, it would easily perform as well as my BSA, if not better, so on second thought I do like it. I would definitely install it in a conventional stock to suit my tastes. Thanks for sharing that picture.

    Mark

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