What caliber for M70 build?

What caliber for a Winchester M70 build?

  • .257 Roberts

    Votes: 4 12.1%
  • 25-06

    Votes: 13 39.4%
  • 270 Winchester

    Votes: 10 30.3%
  • 280 Remington

    Votes: 7 21.2%

  • Total voters
    33
.270 Winchester. I hunted pronghorn for over 20 years with a .270. My friends bought the same caliber. It is very effective on them with a 130 grain bullet. With 150s I’ve taken numerous elk.

The caliber works great for Africa too, my kids have used it to take a few dozen PG.

@Mtn_Infantry makes a very good point, though. It is a common rifle in that action, so just buy a .270 already built! In that case, the .25-06 gets my vote.
 
I don’t know what all your build will entail, but if it’s just a barrel and stock, go with the 257 Roberts or 25-06. If you want to build something really special, meaning high end custom, go for whatever caliber you want. Basically my point is you can buy push feed M70 for $500, and the others are hard to find.
 
All are good for the game you indicated, but a fast twist .270 that’s able to use some of the new heavier bullets would give you a backup rifle to your .30 in a pinch.
 
270 win. With Reloader 26 and a 150gr VLD you can easily get 3000fps and it would be a hammer on what you are after.
 
For Deer size and down you can't beat the 25-06.
 
Even more contrarian—.257 STW. :-). Brass is getting a bit hard to source, but I love mine. .280 or .280 AI are solid as well.
Not sure the STW cartridge will work in this action length. It has a .473 bolt face and the ejection port actually looks more like a short action.
IMG_20240811_101401613.jpg
 
Screw spacing between front and rest screws says long action. Ejection port looks like a short action.
IMG_20240811_101401613.jpg
 

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