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Thread: 270 cal-which one??

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  1. 04-05-2018, 08:21 PM #1
    Kiwi Greg
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    Quote Originally Posted by chainsaw View Post
    @gadgetman is on to it ! 275 to 284
    Yeah that's where you lost me the famous 270 is actually .277 plus nine is ...... opps

    Just like 7mm isnt really seven millimetres its 7.21mm...go figure... calibres are full of those nuances
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  2. 04-05-2018, 08:48 PM #2
    gadgetman
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    Quote Originally Posted by Kiwi Greg View Post
    Yeah that's where you lost me the famous 270 is actually .277 plus nine is ...... opps

    Just like 7mm isnt really seven millimetres its 7.21mm...go figure... calibres are full of those nuances
    That's because 7mm it is the calibre of the bore, the whole before the grooves are cut. The bullet has to be wider than the bore in order to create a seal in front of the building gas pressure.
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  3. 04-05-2018, 08:55 PM #3
    Gibo
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    Quote Originally Posted by gadgetman View Post
    That's because 7mm it is the calibre of the bore, the whole before the grooves are cut. The bullet has to be wider than the bore in order to create a seal in front of the building gas pressure.
    Are you telling Greg how a rifle works? thats the funniest shit ive seen to date!
    Kiwi Greg, BRADS and rewa like this.
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  4. 04-05-2018, 09:02 PM #4
    gadgetman
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    Quote Originally Posted by Gibo View Post
    Are you telling Greg how a rifle works? thats the funniest shit ive seen to date!
    Hey, if he can act dumb, I don't need to.
    Sideshow and rewa like this.
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  5. 13-05-2018, 03:17 PM #5
    300CALMAN
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    Quote Originally Posted by Kiwi Greg View Post
    Yeah that's where you lost me the famous 270 is actually .277 plus nine is ...... opps

    Just like 7mm isnt really seven millimetres its 7.21mm...go figure... calibres are full of those nuances
    SO .277 IS actually 7mm so .270 fires a 7mm projectile so .270 should be called 7mm?

    A real caliber like 338WM IS actually shooting a .338 caliber projectile!
    Micky Duck likes this.
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