So
who bought and is shooting a Rifle chambered in the NEW 7 MM Backcountry cartridge
Thoughts and Performance evaluation If you would Please ! Thxs RJ


No they're not the same. BC uses a 30 degree shoulder that starts closer to the base and the case length is a bit shorter. No idea if you can shoot 7bc in a 280ai chamber, or how the new "brass" would handle it, but looking at the below pics i think you'd end up with a really short neck if it's doable.I've heard of some extraction issues with them. I'm still waiting to hear if they can be fired from a 280ai because apparently the case dimensions are the same.
Then it will just be a “ short necked “ 280 RemI'm still not sold on steel cases. Reloading is a big deal for me, and working with steel has taught me it's not very friendly to multiple uses. I guess we will see once more people have them though. If they sell enough of them, I'll bet someone will start making brass cases. - dan
With a short neck. Apparently that's important now, lol. - danThen it will just be a 280 Rem![]()
Have you heard anything about when cases and/or dies might be available?Yes I had an existing rifle rebarreled with a 24 #3 contour 1-8 twist Benchmark
The rifle has a Defiance Rebel action, Wildcat stock
So far it has great velocity, I’ve shot the 175gr Federal Fusions, 170gr Terminal Ascent and the 168gr LRX
Rifle weighs 8lbs 14oz scoped
Federal fusions adv velocity from 24” barrel 3125
I got 3080fps
168gr LRX adv velocity 3150 from a 24” barrel
I got 3092fps
170gr Terminal Ascent adv velocity from a 24” barrel 3150
I got 3106fps
This is a new barrel and should speed up slightly,
Recoil was very similar to a 7 PRC
The terminal ascent was the least accurate avg 1.25”-1.5”
The 175gr fusions and the 168gr LRX shot fairly well.
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No I haven’t heard anything more about the reloading end of things, tough enough getting ammo for this rifle, just starting to show up in Canada now.Have you heard anything about when cases and/or dies might be available?