7mm Backcountry, does BC stand for best choice or bad cartridge? Let's test it!

[reynolds243]

also side note, Yesterday I ordered a 7mmBC 16.5" Evoke rifle and have ammo on the way for 155g, 170g, 175g options.

Will post here what I find personally with that combo. Will be running it suppressed obviously, but will prob be a week or 2 till I get everything, set it up and then go shoot

 

[The Guide]

already does that with the 6.5 PRC. I get 2750 with my 18" suppressed PRC 140g accubonds. slightly higher on the 127 barnes.

If you are doing a 6.5BC it would have to be higher than that to push it over a tried and true 6.5PRC.

I really think that a 6.5BC would have to at 2900 to 3000 fps from a 16" barrel to really get people excited about it. That would put it in the 3100 to 3200 range in a 20" barrel. A 156 Berger at 3100 fps would be nice to see.

Jay

 

[Moby Sculpin]

Tagging in here to see how this pans out. Thank you for doing this!

 

[wind gypsy]

If I had F you money, thays exactly what I'd be doing. Making smaller midsized cases with the peakalloy tech in smaller calibers sizes. I'd even pay some 5 year old to come up with a better name than back country.

6mm Triceratops!

Isn't shellshock making 6.5 creed cases? That sounds like another possible option on the horizon.

 

[UnckleBob]

I really think that a 6.5BC would have to at 2900 to 3000 fps from a 16" barrel to really get people excited about it. That would put it in the 3100 to 3200 range in a 20" barrel. A 156 Berger at 3100 fps would be nice to see.

Jay

I think a 6.5BC would likely generate 2900-3,000fps from a 16" barrel. Those numbers are consistent with what a 277 Fury can do with a 140g class bullet and a 16" barrel. The higher pressure of pressure has a benefit in short barrels.

I doubt a 6.5PRC gets close to those numbers. Furthermore, I would expect it to have lower recoil than a 6.5PRC since it would use less powder to achieve that velocity.

Barrel life would be short.

 

[reynolds243]

I think a 6.5BC would likely generate 2900-3,000fps from a 16" barrel. Those numbers are consistent with what a 277 Fury can do with a 140g class bullet and a 16" barrel. The higher pressure of pressure has a benefit in short barrels.

I doubt a 6.5PRC gets close to those numbers. Furthermore, I would expect it to have lower recoil than a 6.5PRC since it would use less powder to achieve that velocity.

Barrel life would be short.

barrel life has little to do with pressure (hornady talks about this a good bit) and more about powder being burned or not being burned, at least thats what Hornady and Federal claim. SO if thats correct something like a 6.5BC wouldnt really have any less a barrel life then the PRC in theory

Even federal CLAIMS the BC barrel life should be in the same range as a 270 caliber gun.

 

[nm.otter]

I'd bet grains of powder burned relative to bore area.

 

[longrangelead]

I really think that a 6.5BC would have to at 2900 to 3000 fps from a 16" barrel to really get people excited about it. That would put it in the 3100 to 3200 range in a 20" barrel. A 156 Berger at 3100 fps would be nice to see.

Jay

I'm curious about muzzle pressure and how it affects suppression/recoil.
would it be to much to do a brake/suppressor comparison?

 

[Presswood_936]

I'm curious about muzzle pressure and how it affects suppression/recoil.
would it be to much to do a brake/suppressor comparison?

I shot my 16” 7BC along with my buddies 22” lightweight 7 prc . They both have the same cgs Hyperion K silencer . The 16” 7bc was obviously a little louder but the recoil was pretty comparable .

 

[The Guide]

I'm curious about muzzle pressure and how it affects suppression/recoil.
would it be to much to do a brake/suppressor comparison?

The suppressor I'm going to use, SilencerCo Omega 300 DTM, has a brake end cap. I have a brake I could use but I'm not looking to do a ton a different things with this project. I had allocated $1k for the project and I'm well over that right now. When I'm done playing I might sell the project for what I'm into it if someone else is interested in doing a long term test or additional testing.

Jay

 

[reynolds243]

not sure if its allowed to post youtube content here or what BUT this guy did a REreview of the savage 110 Trailhunter lite and got some really good results.
If you didnt see the first one it literally would not eject, he had to beat the bolt with a hammer to get it to finally move. Sent it back to savage and they sent him another gun that they said was verified to be working as intended.

The groups and speeds he got in the 16" barrel are impressive.

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