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Thread: Fixed barrel springers, will there ever be a better setup than the sliding breech

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    Barryg's Avatar
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    Fixed barrel springers, will there ever be a better setup than the sliding breech

    Also what popular modern sliding breech gun has the best breech seal up?

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    The roller-breech as used on BSA SuperStars and some Gamos is a safer method of getting direct-loading, but I think it still has some efficiency issues because of the length of the transfer port. This design could be worked on to give a shorter TP with some imagination, but it might be a little more complex. Sliding breech is cheap, works well and apart from the finger-chopping potential, does the job extremely well.

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    hatsan torpedo maybe?

    The system that the hatsan torpedo uses looks good

    https://www.google.co.uk/imgres?imgu...act=mrc&uact=8

    allows direct-to-barrel loading but none of the beartrap issues. Maybe a bit lighter too, as it doesn't need a separate compression cylinder

    BB

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    Quote Originally Posted by brassbanjo View Post
    The system that the hatsan torpedo uses looks good

    https://www.google.co.uk/imgres?imgu...act=mrc&uact=8

    allows direct-to-barrel loading but none of the beartrap issues. Maybe a bit lighter too, as it doesn't need a separate compression cylinder

    BB
    Only problem is that it is not a fixed barrel

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    Quote Originally Posted by Barryg View Post
    Only problem is that it is not a fixed barrel
    I have been studying the pictures and thought, no, they CAN'T have made it with the barrel sliding back and forth with all the slop that would imply, yet it cannot be a sleeve as that would mean about 10ccs of dead space between the transfer port and the breech... so you are telling me IT IS a sliding BARREL like a flippin Crosman M1 BB gun? Oh very dear me. First Webley-style trap-doors, now this.

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    Like an air logic genesis...
    Always looking for any cheap, interesting, knackered "project" guns. Thanks, JB.

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    Quote Originally Posted by Barryg View Post
    Only problem is that it is not a fixed barrel
    Busted! you're right of course

    The amount of "slop" introduced would depend on the engineering standards,
    but it seems such a simple system, it can't be that difficult to get right?

    Surely it's much more difficult to make an accurate break barrel, where the slightest "slop"
    in the pivot translates to huge inaccuracy?

    BB

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    tinbum's Avatar
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    Modern, well made break barrels are better imo. Direct to barrel, shorter TP, faster to reload and just as accurate.
    God rest ye jelly mental men

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    What about the multi shots like BSA's Goldstar and Theoben's SLR88? 'bout time a quality manufacturer re-introduced this set-up!

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    Quote Originally Posted by tinbum View Post
    Modern, well made break barrels are better imo. Direct to barrel, shorter TP, faster to reload and just as accurate.
    Fixed barrel Vs break barrel is a bit like .177 Vs .22

    The only thing about fixed barrels is that the barrel is less likely to get bent as the barrel on a BB is used as a cocking lever every shot and other reasons, bent barrels are usually on break barrels, I expect you have seen a fair few
    I'm not sure what you mean BBs have shorter TPs.

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    I think a properly engineered pop-up breech could work and even lend itself to a multi shot design like a Steyr. Of course it is not direct loading though. Could have a cental to, short transfer port, what ever you want really😀
    Plinkerer and Tinkerer

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    Quote Originally Posted by Barryg View Post
    Fixed barrel Vs break barrel is a bit like .177 Vs .22
    Yep, .22 is better, in a break barrel it's best!
    God rest ye jelly mental men

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    Quote Originally Posted by Barryg View Post
    I'm not sure what you mean BBs have shorter TPs.
    That was more in reference to the finger friendly fixed barrels, rotating breech, taps etc
    God rest ye jelly mental men

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    The sliding compression tube system has many good points.

    The direct to breech loading is certainly one of them.

    Ease of stripping is another good point, especially on the TX, LGU and 77/97. Not sure about the Dianas as I've not owned / stripped one.

    Very short transfer port (on 77/97) and central port on TX. And the TX one isn't excessively long.

    With the comp tube not being an integral part of the receiver of the gun, tuning and experimenting with different bores etc is also made easier. And wrecking a comp tube doesn't write the whole of the receiver off (applies to many out there who may not have the engineering skills or tackle to make good knackered cylinders).

    The only potential negatives are the finger mangling capabilities, which are a non-issue if safe handing is observed anyway and a slightly more fiddly loading operation compared to some systems. Both non-issues for me and I love 'em.

    As to which sealing system would be the better, don't really know, but never had an issue with my TX or my many 77s/97s.
    Last edited by TonyL; 22-05-2018 at 06:37 PM. Reason: Oops! Compassion?
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