About grandpamac

Basic Information


Age
76
About grandpamac
Location:
Okawa Hawkes Bay
Interests:
Hunting, handloading and outdoor.
Occupation:
Retired

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Total Posts
Total Posts
3,205
Posts Per Day
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Last Activity
Today 07:37 AM
Join Date
06-12-2019
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1012 Likes

  1. grandpamac
    grandpamac liked post by Puffin On thread : The Maths of Recoil
    I'm not singling you out. I'm referring to comments like the above that are incorrect, because clearly it is the velocity of the projectile/s that are being referred to.
    Liked On: 14-08-2020, 08:42 AM
  2. grandpamac
    grandpamac liked post by Cordite On thread : The Maths of Recoil
    It would seem difficult to do a straightforward calculation based on Newton's laws even with a normally crowned muzzle as some of the propellant gas will get vented at 90deg to the bore axis and will...
    Liked On: 14-08-2020, 08:41 AM
  3. grandpamac
    grandpamac liked post by Moa Hunter On thread : The Maths of Recoil
    I too disagree, I have not been mislead. Although the article contains all that I needed to answer the question opening the topic for discussion potentially has some benefit for other members....
    Liked On: 14-08-2020, 08:41 AM
  4. grandpamac
    grandpamac liked post by Puffin On thread : The Maths of Recoil
    I disagree. Basic understanding on recoil necessarily begins with balancing momentum. The article the OP linked to contained all that was needed for him to answer his own question without being...
    Liked On: 14-08-2020, 08:41 AM
  5. grandpamac
    grandpamac liked post by Puffin On thread : The Maths of Recoil
    I doubt it. Turning in his grave more likely. Recoil calculations are based on conservation of momentum.
    Liked On: 13-08-2020, 06:15 PM
  6. grandpamac
    grandpamac liked post by zimmer On thread : The Maths of Recoil
    Timely to bring Chuck Hawks ( is there really a guy named such) in. https://www.chuckhawks.com/rifle_recoil.htm Check out his table. It's been around a long time. Does his info match QL calcs? ...
    Liked On: 13-08-2020, 06:15 PM
  7. grandpamac
    grandpamac liked post by Moa Hunter On thread : The Maths of Recoil
    That is a very clear way of explaining it GPM and would have Sir Isaac thinking. What interests me is if I am going to build a lightweight rifle in 6.5 mm that achieves 3000 fps with a 100 grain...
    Liked On: 13-08-2020, 03:48 PM
  8. grandpamac
    grandpamac liked post by Plinky On thread : The Maths of Recoil
    Quickload provides a recoil estimation based on the load you have plugged in at the time and the mass of the rifle. Don’t know how accurate it is but the numbers change in the direction you would...
    Liked On: 13-08-2020, 03:48 PM
  9. grandpamac
    grandpamac liked post by erniec On thread : A Rifle for Almost Everything.
    Just might go in my 30-06 too.
    Liked On: 13-08-2020, 12:03 PM
  10. grandpamac
    grandpamac liked post by Synthetic On thread : A Rifle for Almost Everything.
    If I can only keep one rifle it would be my 308. Common and readily available. Wide range of shootable projectile weights. Can load it down, can load it hot. Most importantly it just knocks...
    Liked On: 13-08-2020, 12:03 PM
  11. grandpamac
    grandpamac liked post by Micky Duck On thread : A Rifle for Almost Everything.
    pooforpee=twoforfree=EBRG.....
    Liked On: 13-08-2020, 12:03 PM
  12. grandpamac
    grandpamac liked post by Micky Duck On thread : A Rifle for Almost Everything.
    my poohseventy did it all for years...bought a .223 so I could do wallaby shooting cheaper and with less recoil.... still love both rifles... sort of inherited a .308 by default (long painful...
    Liked On: 13-08-2020, 12:03 PM
  13. grandpamac
    grandpamac liked post by 7.62 On thread : A Rifle for Almost Everything.
    Agreed. A 260, Creedmoor, or 6.5 Lapua would be hard to beat if you had to have just one rifle. But the 308 is very efficient for 95% of the hunting that I do, so no need to change
    Liked On: 13-08-2020, 12:03 PM
  14. grandpamac
    grandpamac liked post by Finnwolf On thread : The Maths of Recoil
    An aside: why do 1oz 12g slug loads seem to kick harder than 11/4oz no.5 shot loads? Higher velocity?
    Liked On: 13-08-2020, 10:30 AM
  15. grandpamac
    grandpamac liked post by Cordite On thread : The Maths of Recoil
    Is that you, kotuku???
    Liked On: 13-08-2020, 10:29 AM

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