Rebarreling/rechambering a 7 rem mag to 7mm dakota?

Go to a 7mm Blaser Magnum, it has same bolt face 30° Shoulder ~83 grain cap. and long neck for longer barrel life. Norma Brass. Efficient Cartridge, 2.35" Case. Seats long
1.51-1.55" boattails@ shoulder and neck
junction. Will run 3.340 COAL SAAMI length in normal long action magazine. Runs 151gr.Warner Flatlines to ~3300+ FPS and 180 gr. Berger Hybrids @ 3050-3080+ FPS and 195 gr. EOL @ 2925-2960 FPS. It will match all bullet velocity of the Dakota except for maybe the 195 gr. Berger. Very well designed and underated Cartridge. Dakota Brass is proprietary and expensive. 7mm Blaser Magnum uses Norma Brass. It has 76.251 gr. usable case capacity in the standard case and ~79.75 gr. in the IMP. blown out case.
 
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Go to a 7mm Blaser Magnum, it has same bolt face 30° Shoulder ~83 grain cap. and long neck for longer barrel life. Norma Brass. Efficient Cartridge, 2.35" Case. Seats long
1.51-1.55" boattails@ shoulder and neck
junction. Will run 3.340 COAL SAAMI length in normal long action magazine. Runs 151gr.Warner Flatlines to ~3300+ FPS and 180 gr. Berger Hybrids @ 3050-3080+ FPS and 195 gr. EOL @ 2925-2960 FPS. It will match all bullet velocity of the Dakota except for maybe the 195 gr. Berger. Very well designed and underated Cartridge. Dakota Brass is proprietary and expensive. 7mm Blaser Magnum uses Norma Brass. It has 76.251 gr. usable case capacity in the standard case and ~79.75 gr. in the IMP. blown out case.
One question..... Does it have the case capacity of the Dakota? Yes or no....
 
Just do a 28 Nosler. It's basically the same thing without the one source of brass and odd head size. Petersons and ADG will have brass shortly. You'll probably have to slightly modify the feed rails for either to feed correctly.
 
Just do a 28 Nosler. It's basically the same thing without the one source of brass and odd head size. Petersons and ADG will have brass shortly. You'll probably have to slightly modify the feed rails for either to feed correctly.
I turned my Rem 700 7rm to a 28 Nosler , only very slight opening of the feed rails. Just a couple of thousandths.
 
It isn't typically much but it normally has to be done. Sometimes you have to massage the edges of the loading ramp too. If you look at a ultra mag and a normal mag action side by side you'd be able to see the difference. Remington should just make the ultra mag actions as normal magnums feed perfectly fine in a ultra mag action.
 
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