• Win an RIX Storm S3 Thermal Imaging Scope!

    To enter, all you need to do is add an image of yourself at the range below! Subscribers get more entries, check out the plans below for a better chance of winning!

    Join the contest Subscribe

Short magnums for ELR rifles

cuirc

Sergeant of the Hide
Full Member
Minuteman
  • Nov 8, 2023
    471
    208
    Poughkeepsie n. y.
    I recently came into ownership of a Remington 40X in 243. A very nice looking rifle with a stainless barrel; it doesn't need anything and could remain as is. But there is a Problem is, it has a 10 twist and the range of bullets that will stabilize is short. I was wondering if I converted it to one of the short magnums like the 300 S win. How close would it come to being practical as an ELR rifle?
     

    An older article but looks like short mags (6.5PRC, 6.5SAUM, 7SAUM etc) were fairly popular a few years ago for ELR.

    I believe 300 Norma and 300PRC are the most popular cartridges (until the big big cartridges start taking over .375/.4xx) but the short mags are every bit as effective now as they were when this article was written.

    For "medium ELR" 1000-2000yards it looks like 7-6.5prc (basically 7saum with better brass) is shapping up to be a very popular option.
     
    • Like
    Reactions: lash and cuirc
    Thank you for the information, I have a 40X action that I think would be great for that, if it can handle the pressure. Right now at 80 I am using a 338 LM and I will have to work out all year, to keep in shape to be able to continue in the near term with it, When the time comes to scale down, I hope to have a path to success.
     
    • Like
    Reactions: lash
    7 Sherman short Mag or do a 7mm-6.5PRC and single load.

    The issue you will have is your action has a .473 bolt face and you need a .538. Would be cheaper and probally better in long run to buy a new action like origin or ARC CDG.
     
    Last edited:
    • Like
    Reactions: lash