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Thread: DeLisle MKIII 303

  1. #1
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    DeLisle MKIII 303

    Want to buy (or I will be prepared to take it for free) a shot out No1 MKIII 303 barrel, my first go at building .410 a DeLisle ended up with a chamber a touch on the big side so I want to have another go. Im also still after a couple of sling swivels (like the one on the suppressor shown)

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    Kiwibanger and Dago like this.

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    Where ru? I think I have in Taupo
    Boom, cough,cough,cough

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    Yea should have put that, in Chch

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    Wonder why "they" never just made in .303 with subsonic heavy .303 loads, but still able to be used for normal loads. Much cheaper, and would have made a brilliant sniper with standard ball ammo - imagine a No 4 (T) (S) for scoped suppressed.

    Sure it would have required an unusual ammo to be issued, but no great handicap if it could also handle readily available supersonic ball - I mean, how many "silent" sentry kills would a de Lisle be required for in its entire service life?
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    Quote Originally Posted by Cordite View Post
    Wonder why "they" never just made in .303 with subsonic heavy .303 loads, but still able to be used for normal loads. Much cheaper, and would have made a brilliant sniper with standard ball ammo - imagine a No 4 (T) (S) for scoped suppressed.

    Sure it would have required an unusual ammo to be issued, but no great handicap if it could also handle readily available supersonic ball - I mean, how many "silent" sentry kills would a de Lisle be required for in its entire service life?

    They could have done all sorts of things that seem to make sense in retrospect, cut 6 inchs off the barrel and get rid of the full wood, put a brake/flash suppressor on the end of it...
    I did wounder about why they didnt make a sub 303, it would have been a lot easier, the only thing I can think of is that the twist rate isnt fast enough

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    Quote Originally Posted by Cordite View Post
    Wonder why "they" never just made in .303 with subsonic heavy .303 loads, but still able to be used for normal loads. Much cheaper, and would have made a brilliant sniper with standard ball ammo - imagine a No 4 (T) (S) for scoped suppressed.

    Sure it would have required an unusual ammo to be issued, but no great handicap if it could also handle readily available supersonic ball - I mean, how many "silent" sentry kills would a de Lisle be required for in its entire service life?

    Old thread but getting one of these done myself and ran a search so thought I would resurrect. Have also been doing some work with subsonics here. The answer is likely calibre, for the same reason handgun cartridges exist. At velocities too low to set up cavitation a 45 hole is 50% better than 30 cal. 308 subsonic is not a great killer, while no subsonics really are on game, you do notice a performance difference stepping up to a 44 or 45 in a lever gun at the same speed. Noise also probably had something to do with it. Subsonic 303 is also going to be louder than 45 even with the supressor, its burning several times the powder.
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    Powder burnt isn't as Much an effect as bore hole size
    My 44 special sub load is far louder than my 308 sub load

    45 is easy as it's a standard issue round so easily available and standard subsonic
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    @sixtus, I think you Must not have had a great deal of experience shooting subsonic and suppressed guns in the 30 and 44/45 class guns to make that comment.

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    Quote Originally Posted by Bill999 View Post
    Powder burnt isn't as Much an effect as bore hole size
    My 44 special sub load is far louder than my 308 sub load

    45 is easy as it's a standard issue round so easily available and standard subsonic
    But surely the more powder burnt, the more gas produced and the harder it is to capture that needing a much bigger suppressor ??
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    'Bother' said Pooh, as he chambered another round ... Wong Far King Way

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    45 Makes way more sense than subsonic 303.

    For the military better is not always best. Supply lines and existing infrastructure matters.
    subsonic 303 will require less work up front in making the rifle but then run into other issues
    setting up a new production line, getting the specialty subsonic ammo to where its required operationally.

    Where about converting to 45 takes more effort up front.
    But no need to make a specialty ammo.
    45 is deployed everywhere so no need to worry about availability of the ammo
    sixtus likes this.

  11. #11
    Member Ryan_Songhurst's Avatar
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    Why didnt they just make a big ass suppressor for their 45 cal handguns?
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    #30GANG....

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    Quote Originally Posted by Moa Hunter View Post
    But surely the more powder burnt, the more gas produced and the harder it is to capture that needing a much bigger suppressor ??
    totally. the dpt on my 77/44 running 44 supers has like 8 extra baffles on it and its still louder than my 308 with a much smaller volume can

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    Quote Originally Posted by Ryan_Songhurst View Post
    Why didnt they just make a big ass suppressor for their 45 cal handguns?
    they(sterling?) used the magizine from a 1911, a thomson 45 barrel and a lee enfield rifle
    parts bin gun, some even came with a cool paratrooper stock
    the cool little things like a section of wood in the bolt handle to stop the metal v metal slap when reloading
    there is a good episode on forgotten weapons (on youtube) that go thru them in detail

    semi auto pistols wont be as quiet as a longer barrel in a locked breech with a massive volume suppressor
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    Quote Originally Posted by Friwi View Post
    @sixtus, I think you Must not have had a great deal of experience shooting subsonic and suppressed guns in the 30 and 44/45 class guns to make that comment.

    My experience is trailboss in bottleneck centrefires and agree the smaller calibres make less noise.

    Point is with WW2 powder tech for a 303 I assume it is going to be semi-full cases of powder 30, 40 grains etc? Question is that going to be louder or effecting the delisles concept too much in some way?

    Freely admit I don't use the big charges for subsonics though, nor have I ever used an integral style suppressor.
    Last edited by sixtus; 22-09-2019 at 11:32 PM.

  15. #15
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    Quote Originally Posted by Bill999 View Post
    totally. the dpt on my 77/44 running 44 supers has like 8 extra baffles on it and its still louder than my 308 with a much smaller volume can
    What are the two powder charges for comparison Bill ?
    'Bother' said Pooh, as he chambered another round ... Wong Far King Way

 

 

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