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What is a 20Tac ?

Discussion in 'Firearms Certificate (FAC) Guns' started by mattgriff88, Aug 27, 2014.

  1. mattgriff88

    mattgriff88 Busy Member

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    Location:
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    Evening all,

    i have been doing some research on .204 ruger and this 20Tac keeps getting mentioned.

    From what i understand its based on a 223 case rather than the 222 that the ruger is based on.

    Can anyone explain it a bit more to me please?
    is it any better than the 204 ruger, should i be considering this?
     
  2. Elk hunter

    Elk hunter Keyboard Hero

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    .20 TAC was a wild cat round back before the Ruger .204. It's based on the .233 case necked down, from what I remember it was a punchy little thing. I don't think there is much different between the two rounds apart from the 20 TAC brass is easy to fined as the Ruger is its own round where as the .20 TAC is made from a standard case, very much like the remmington .17. TAC is for tactical

    Andrew
     
  3. Martyn79

    Martyn79 Member

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    Location:
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    .204 ruger is based on .222 rem magnum and not the standard .222rem case (.20 cal .222rem based wildcat is called the 20 vartag turbo). the 20 Tac parent case is .223 rem as mentioned above,the case then has the shoulder pushed back and formed in a die to 30 degrees which also creates a longer neck for better accuracy.
    The 20 tac is a couple of grains short of the 204 ruger in case capacity but can just about match it in velocity.When i had mine built years ago the .204 ruger had not long been on the market and you had to either buy factory rounds or form from 222 rem mag cases which were very hard to find in the uk at the time.

    Lapua done a limited run of 20tac brass for Dakota arms and the quality was fantastic (even better than their .220 russian brass that i used to form 6ppc cases).At the time .204 ruger brass could not match either the Lapua Dakota 20tac brass or Lapua 223 rem brass used in the 20 tac. It is a different story now with good quality brass being available for the .204 ruger and no real reason to go with 20Tac unless you really want to build or re-barrel a rifle.If you do go down the re-barrel route make sure you go for a 1:11 twist rate as it gives much better bullet stability with the 40 grain bullet than the standard 1:12 twist and that is where the mid to large capacity 20 cals start to really shine from 40 grain bullets upwards.
     
  4. Martyn79

    Martyn79 Member

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    Just found a pic i took that shows the different cases.

    Left is .222rem
    Centre Dakota .20Tac
    Right .222rem Mag (.204 ruger parent case)

    [​IMG]
     
  5. mattgriff88

    mattgriff88 Busy Member

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    Thanks both for the detailed explanation.
    i think i will stick with the ruger :)
     

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