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Thread: Looking for info

  1. #1

    Looking for info

    I know/recognise most calibres up to 243, but over that I start to get lost
    ie I know that
    223 = 5.56
    308 =7.62 (7.62 x51???)

    could there be a list of calibres in imperial with metric equivalents going up in size or could someone/anyone put up a list

    243 =
    = 6.5x55
    308 = 7.62


    thanks for any info


  2. #2
    Anybody got any info??

  3. #3

    Unfortunately I think it a little more comlicated than that. Many metric calibres have similar imperial equivalents, but often they are only that.

    Further complications occur when comparing the different projectile weights available for various calibres. Simply by looking at some of the other threads on here, you will see just how involved it can get!

    I'm no expert, that's just how I see it. Maybe someone else could shed more light on the matter???

    I would certainly be interested too...........


  4. #4
    SD Regular willie_gunn's Avatar
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    May not be exactly what you are after, but have you checked out:

    It also includes a link to an interesting reference site here:


  5. #5
    The Chuck Hawkes site contains some useful information although as on any site where there is more than one contributor there are differences of views on many subjects. All the better for it in my opinion.

    Also have a look at various reloading manuals. They generally give a synopsis of the caliber and its uses, whether it is similar or identical to another caliber also detailed descriptions of the cartridge case, the suitable primers, the various bullets including their suitability for various tasks as well as the different types powders for loading the completed cartridge. Typical presures and speeds are also quoted.

    Even if you never take up reloading they also open the door into a world of discussion on what caliber will do which job best or how one caliber is 'better or worse than another caliber', as can be seen by reading various threads on the forum. However if you compare the various manuals you will find that they also differ in their recommended loads for different calibers.

    How to choose which manual to 'believe'? Pick one and stick with it until you feel you have gained experience to change direction.

    Here endeth the lecture and enjoy the investigations.


  6. #6
    Thanks folks that will get me started/confused, as in airguns the circular discussion on 177 v 22

    Now if someone could tell me the best and definitive alround calibre for for Stalking


  7. #7
    .600 nitro express.

  8. #8
    Quote Originally Posted by 8x57
    .600 nitro express.
    As an alternative - .50BMG - in bursts of 3-5 rounds.

  9. #9
    Quote Originally Posted by Bandit Country
    .50BMG - in bursts of 3-5 rounds.
    Does anyone do that in a ballistic tip?

  10. #10
    I used to own a wildcat .355 express what an animal that was we had to machine cases out of brass bar or you could use cut down .303 cases to make "shorts" we used to shoot rabbis with it for fun when we were younger with devastating effect

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