7mm Backcountry - 170gn at 3,000 fps

[Foxyboy43]

Clearly a cartridge only suitable for pipe hitters who have knitted hair styles and have a penchant for broken mountainous saddlery

I hope you realise that Creedmoor owners everywhere have just sat up…

 

[doric_prince]

broken mountainous saddlery

What is this?

 

[doric_prince]

I will stick with my 7mm rem mag, but;

 

[Ronin]

Sooooo

You won’t be buying in a reamer for this one , at a guess….

No

Not ever

 

[Konnari]

Good old 7mm rem mag can also do 3000 f/ps with 170gr. bullet

 

[scotch_egg]

Good old 7mm rem mag can also do 3000 f/ps with 170gr. bullet

View attachment 401030

Not with a 20” barrel.

My 7mm SAUM does 2950fps with 26” barrel and 180gr ELD-M.

I don’t believe a 20” barrelled rifle pushing such a heavy bullet so fast would be comfortable me at all.

 

[Tim1989]

my 28 nosler will launch 175g eldx at 3250fps, I shoot them 3210fps

 

[Dave_45]

my 28 nosler will launch 175g eldx at 3250fps, I shoot them 3210fps

What’s the barrel life like on that?

I’d like to own one someday,but brass seems a pain

 

[Tim1989]

What’s the barrel life like on that?

I’d like to own one someday,but brass seems a pain

yea barrel life won't be great, 300 shots through it and it's already pretty worn, probably see 800 if I'm lucky, shoots great though, and now all my load development and setting up is done i won't use it much on range and save it for hunting.

not end of the world putting a new barrel on though


can get brass no problem, also factory ammo available

 

[Dickie]

7mm Bm beats the magical 3000 with 175grn bullets not sure on the barrel length but sure it won’t be 20’

 

[Tubby10]

This is nothing on the venerable 7mm Dakota.
I'm told it's making a resurgence. 190 atips at 2900fps from a 26" barrel. Brass is achievable via a call to spud.

 

[Bordenhunter]

See so much rubbish about these days seems to be a new calibre every few months

 

[Scipio]

another marketing ploy

Quite possibly, as which commonly hunted game, at ethical hunting distances, would require a 7mm bullet with that sort of sectional density launched at 3000 fps? Maybe certain quite tough game at 200 yards +, but then again isnt the 7mm rem mag, or even 280 or 7x64 doing that job well enough, already?
And as i understand it, it runs on 80.000 psi of pressure to make that happen, which i am not sure is great for the longivity of the action or barrel either.
Ah well, each to their own, i guess, in the end it's up to the buyer to decide which rifle and cartridge to opt for.

PS. They're not all marketing ploys though, i'd say, as the 6,8 western addresses the 270s lack of fast twist rates, that some thought were lacking. Well for North American hunters mainly perhaps, as european hunters could just opt for the 7x64 and get most of the same things that the 6,8 western offers, but with greater bullet selection, i'd assume.

 

[Sinistral]

Now a SAAMI registered cartridge complete with a pressure warning.

https://saami.org/wp-content/uploads/2025/01/Public-Introduction-7mm-Backcountry-2025-01-27.pdf

Also two more new registrations:-

SAAMI Announces Acceptance of New Cartridges - SAAMI

SAAMI has announced the acceptance of three new rifle cartridges for SAAMI standardization.

saami.org

.25 Creedmoor joins the .22, 6mm, and 6.5mm.
.338 Advanced Rifle Cartridge (.338 ARC) additional to the .22 and 6mm.