ScopesAndAmmo.com Store Logo

+ Reply to Thread
Results 1 to 6 of 6

Thread: Air Rifle fps standards ?

  1. #1
    Junior Member
    Join Date
    Fri Feb 24 2012
    Location
    Saskatchewan
    Posts
    9

    Air Rifle fps standards ?

    So are there any standards for fps claims anymore like 7.9gr in .177 and 14.3 in .22 in lead or is that all out the windows now? Seem's like most are using alloy pellets in the fps claim but like Eric say nothing about weights.

    Is there a new standard for bench marking fps ?
    Richard

  2. #2
    Senior Member SeanMP's Avatar
    Join Date
    Thu Dec 22 2011
    Location
    Just south of "Out There"
    Posts
    911
    I don't know of any published standards.

    There is still a defacto "Industry Standard" as long as we keep referring to 7.9 gr in .177 and 14.3 gr in .22

    In cases where there is a lack of published standards then common practice is the accepted standard.
    Sean

  3. #3
    Administrator AirGunEric's Avatar
    Join Date
    Sat Dec 3 2011
    Location
    Somewhere Out There
    Posts
    1,265
    Only a few of the German manufacturers are sticking to any sort of "standard"- most of the rest are not specifying what they are doing, or what pellets they are testing with. The only "real" indicator on the numbers is to talk to someone who has tested the product and can specify the weight and velocity they produced- i.e. people on the forums who have bought and experimented with a product.

    I think as a general rule of thumb, anyone claiming their spring-powered gun can shoot faster than 1100fps in .177 and 900fps in .22 is using extremely lightweight pellets. This is not to say lower numbers than this aren't inaccurate as well- but 1100/900fps seem to be the reasonable maximum for spring-powered guns using 'normal' weight pellets- the only way to go higher is to have an excessively large tube/air volume.
    I'd say I care- but I'd probably be lying...


  4. #4
    Junior Member
    Join Date
    Fri Feb 24 2012
    Location
    Saskatchewan
    Posts
    9
    Thanks for clearing things up. I had hoped that there was a standard that everybody used but guess not.

    After thinking my post maybe I was thinking of RCMP's definition for determining a non-pal air rifle <500 fps and less then 4.2 ft-lbs of energy use 7.9gr in .177 and 14.3gr in .22. I was assuming that most companines were using these weights but now I see that is RCMP guideline (subject to change). RCMP air rifle fact sheet is still down

    I think I got it right now .
    Richard

  5. #5
    Administrator AirGunEric's Avatar
    Join Date
    Sat Dec 3 2011
    Location
    Somewhere Out There
    Posts
    1,265
    Look at what you just said; 500fps and 4.2fpe- doesn't much matter what the pellet weight used by the RCMP/CFC is/isn't- the gun needs to meet/exceed both to be classified as a "firearm"- so this only becomes an issue where a gun is shooting excessively heavy pellets (i.e. to stay below 500fps) in an owner-attempt to claim of "not a firearm" where is really shouldn't be classified as a "non-firearm". By convention, the people in the RCMP testing labs (at least in the Ottawa lab anyways) will use "common off the shelf" pellets- but they aren't specifying any exact weights- gives them more "wiggle room" when evaluating things.
    I'd say I care- but I'd probably be lying...


  6. #6
    Junior Member
    Join Date
    Fri Feb 24 2012
    Location
    Saskatchewan
    Posts
    9
    Thank you for your patients with me Eric it is greatly appreciated. I got hit now.
    Richard

+ Reply to Thread

Similar Threads

  1. Rifle Shooting Rest ?
    By rsterne in forum General Airgun Questions
    Replies: 12
    Last Post: Jul 15 2012, 09:40 PM
  2. Can any CO2 rifle run off a tethered HPA tank?
    By Dukemeister in forum Co2 and Pre-Charged Pneumatic (PCP) guns.
    Replies: 4
    Last Post: Jun 23 2012, 10:14 PM
  3. My new RangeMaster field rifle rack
    By Scottster in forum Airgun Picture Gallery
    Replies: 2
    Last Post: Apr 15 2012, 12:44 PM
  4. Prototype SSP Match Rifle
    By AirGunEric in forum Pump-Up Guns
    Replies: 7
    Last Post: Jan 19 2012, 05:43 PM
  5. first co2 rifle
    By Darkside77 in forum Co2 and Pre-Charged Pneumatic (PCP) guns.
    Replies: 7
    Last Post: Jan 01 2012, 05:20 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts