.257 IMP rifle?

The Best online firearms community in Louisiana.

Member Benefits:

  • Fewer Ads!
  • Discuss all aspects of firearm ownership
  • Discuss anti-gun legislation
  • Buy, sell, and trade in the classified section
  • Chat with Local gun shops, ranges, trainers & other businesses
  • Discover free outdoor shooting areas
  • View up to date on firearm-related events
  • Share photos & video with other members
  • ...and so much more!
  • Gunner106

    Enthusiast
    Rating - 100%
    18   0   0
    Mar 4, 2019
    197
    28
    New Orleans
    Good evening everyone,

    Recently picked up a decent shape CR Pederson custom rifle with a mauser action from a friend, been having trouble finding much info on it. But from my understanding CR Pederson was a custom shop, and is actually now closed so not much can be found on it. Would like to run across someone who knows something about CR Pedersen and their work.

    after scrounging the interwebs, I also found different things about the cartridge this rifle is chambered in. Supposedly standard .257 Roberts works in this rifle but the *imp* stands for improved, which leaves me to assume someone was a hand loader, and had this rifle made for the .257 Roberts/Ackley IMPROVED cartridge. Kind of like .223 Wylde in relation to standard .223/5.56?

    Not much of a handloader so all the info from above is Chinese to me. If anyone has any input or knows anything that can help figure this rifle and it’s cartridge out would be much appreciated!
     

    Attachments

    • 762363E3-8570-4D99-ABAF-8C6CA4203B99.jpeg
      762363E3-8570-4D99-ABAF-8C6CA4203B99.jpeg
      48 KB · Views: 161
    • 570191B6-6E36-4B1A-B1BB-85FF593299EE.jpeg
      570191B6-6E36-4B1A-B1BB-85FF593299EE.jpeg
      57.5 KB · Views: 163
    Last edited:

    beauxdog

    Well-Known Member
    Rating - 100%
    10   0   0
    Sep 18, 2007
    3,867
    38
    Baton Rouge
    You can look at a reloading manual to see the difference of the two cartridges. Usually an Ackley Improved cartridge has the shoulders blown out making it capable of holding more powder. This means they would increase the shoulder angle , it was not an uncommon conversion. It should be able to shoot standard .257 Roberts ammo but it will come out as an Ackley case due to fire forming.

    Bryan
     

    Gunner106

    Enthusiast
    Rating - 100%
    18   0   0
    Mar 4, 2019
    197
    28
    New Orleans
    Very interesting. So it’s still a very usable rifle. Unfortunately I don’t do any reloading of my own so I wouldn’t be able to reap the full benefits of the proper cartridge this rifle is chambered for. Guess I’ll have to throw a scope on it and find some .257 Roberts and start shooting.
     

    apachegunw

    Member
    Rating - 0%
    0   0   0
    Aug 13, 2019
    12
    1
    Pineville LA.
    The 257 Roberts AI is an exceptional round. Nearly the power of the 25-06 when loaded to it's full potential. It's worth the effort, but it's a reloading proposition only.
     

    Gunner106

    Enthusiast
    Rating - 100%
    18   0   0
    Mar 4, 2019
    197
    28
    New Orleans
    Seems like a worthy round. If only it was easier to find factory loads. And then maybe start handloading.

    If I can’t find ammo easily enough, the rifle might have to go up for sale to someone who loads this round :dunno:
     
    Last edited:
    Top Bottom