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Best way of explaining rimfire to a newbie?

Ruger22
What is the most accurate definition? Thanks for the feedback?

Brian Ostro.
I am committed to the sovereignty of our great Republic and Jesus Christ is my Lord and Saviour
member: NRA, Rimfirec Central, John Birch Society, American Numismatic Association.
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Comments

10 comments

Date Votes
  • Hangfire
    The initial explosive compound is in the rim of the case as opposed to a renewable primer..

    Love them Pre-64's!!!!-Bob
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  • Laredo Lefty
    The priming mixture is in the base of the casing and goes off when the firing pin strikes the "rim" of the case.

    Centerfire, on the other hand, has a replaceable primer in the "center" of the casing, and the firing pin must strike the center of the round to set it off.

    "Never let school interfere with your education"
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  • kingjoey
    What Hangfire said[:D] A rimfire cartridge has the primer in the rim of the cartridge and can be ignited by a strike anywhere along the rim. A centerfire cartridge uses a primer in the center of the cartridge. Then you have pinfire and teat-primered cartrdiges too, but start with the modern stuff[:D]

    orst-title-1.gif

    SUPPORT THE I.N.S. , THE COUNTRY THEY SAVE COULD BE YOUR OWN
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  • tapwater
    To get really basic...primer compound is impact sensitive. A blow from the firing pin (think hammer and punch), ignites the compound which in turn ignites the powder charge. The powder burns at a controlled rate, pushing the bullet down the barrel. I repeat, the powder burns, it does not "explode"...Hope that helps..

    The early bird gets the worm, but the second mouse gets the cheese.
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  • Ruger22
    Very informative so far. Keep them coming, thanks

    Brian Ostro.
    I am committed to the sovereignty of our great Republic and Jesus Christ is my Lord and Saviour
    member: NRA,RFC, John Birch Society, American Numismatic Association.
    0
  • I.Shute
    You got it all.

    That's all there is.

    Next question - ??
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  • bambihunter
    I might add that rimfires are considered slightly more dangerous since by theory they'd take less crushing pressure to set one off than a centerfire...

    The best way to describe it might be to take a fired centerfire and a fired rimfire and show those you are wanting to teach the difference. A picture is worth a thousand words, holding both types of cartridges might be worth even more words...

    It matters not how many times you've been knocked down. What matters is how many times you've gotten back up.
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  • rockton
    I might add to the fact that rim fire cartridges can be in any location in the chamber. Obviously a centerfire has the primer at the center and in line with the firing pin. Rim fires will always have primimg mixture in line with the firing pin which is not located at the center of the chamber.

    Thanks
    Rockton
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  • Ruger22
    Thanks alot for the detailed info. Its much appreciated.

    Brian Ostro.
    I am committed to the sovereignty of our great Republic and Jesus Christ is my Lord and Saviour
    member: NRA,RFC, John Birch Society, American Numismatic Association, United States Chess Federation.
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  • competentone
    I'll just add that if I'm explaining how firearms work to someone who has absolutely no knowledge about them--and especially if they aren't real "technically minded"--when explaining the function of the primer I sometimes use the analogy of the pimer being like "kindling wood" for the "fire"--represented by the powder charge.

    The energy is in the powder, but it needs a significant ignition source. The primer serves that function. Once someone grasps the idea and function of the primer, understanding the different methods of priming can be easier.
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