7 X 57 or 6.5 x 55 ?

.... and it's cooler.


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Ballistic performance similarity aside on impact the 6.5x55 has better sectional density.

The Swedes and Norwegians took the time to developed this cartridge for a good reason.

While their design notes seem to be lost to history, I suspect they had a good hard look at the various hunting cartridges around at the time.
 
Shooting just 140gr bullets, the 6.5x55 has an edge in penetration. Both do 2,700fps with a 140gr bullet, though the 7x57 achieves this ever so slightly more easily. The 7x57 is in its element with 150gr+ in my opinion, with 2,500fps with a 168gr Sierra and 2,300fps with a 175gr Partition, about as low a velocity "floor" as I'd want to step down to for hunting with bullets of this diameter range. For heavier game, the 7x57 is slightly more capable. Though in the end will the game know the difference between a 140gr 6.5x55, and a 175gr 7x57? Probably not...

What's this 2700 with a 140 grain bullet in the 7x57???? ;):D I have never owned a 22" 7x57 that would not make 2900 fairly easily, using the correct powders. If you compare trajectory, starting the 140 - 6.5x55 at 2750 and the 140 - 7x57 at 2900, they are quite similar. The 6.5 - 140 gets the edge in sectional density, of course. As for the 175, I usually see about 2500 in a strong action, and that will penetrate like crazy!! Regards, Eagleye.
 
It has been proved that the sectional density, and the twist of the 6.5 combine to provide killing power disproportionately high for the the size of the bullet and velocity of the bullet.

Considering modern cartridges, neither is very flat shooting IMO, but velocity is also overated, IMO; this coming from a guy whose first one gun choice is a 300 Win.Mag.

In short, I'm a 6.5 fan, but only in modern rifles, so the true ballistic potential can be achieved when handloading.
 
It has been proved that the sectional density, and the twist of the 6.5 combine to provide killing power disproportionately high for the the size of the bullet and velocity of the bullet.

Considering modern cartridges, neither is very flat shooting IMO, but velocity is also overated, IMO; this coming from a guy whose first one gun choice is a 300 Win.Mag.

In short, I'm a 6.5 fan, but only in modern rifles, so the true ballistic potential can be achieved when handloading.

My Bold; Me too, anything pre 1890 is just so old hat!:D
 
It has been proved that the sectional density, and the twist of the 6.5 combine to provide killing power disproportionately high for the the size of the bullet and velocity of the bullet.

Considering modern cartridges, neither is very flat shooting IMO, but velocity is also overated, IMO; this coming from a guy whose first one gun choice is a 300 Win.Mag.

In short, I'm a 6.5 fan, but only in modern rifles, so the true ballistic potential can be achieved when handloading.

My bold; me too anything pre 1890 is just so old hat:D
 
It has been proved that the sectional density, and the twist of the 6.5 combine to provide killing power disproportionately high for the the size of the bullet and velocity of the bullet.
I doubt very much that you or anyone else would be able to see any disproportionate killing power difference between a 7x57 or a 6.5x55 using similar bullet type and weight at similar velocities.

Having said that .........

A sophisticated, discriminating shooter would take a 7x57 any time while the 6.5x55 would be the first pick for the trailer park refugee. ;)


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I have owned both, I still have my 7x57 ruger that I bought new about 13 years ago. The 7x57 is my favorite as I feel slightly more comfortable on moose with it. Also, I shot my first dall ram with the same ruger about 12 years ago so there is a little sentimental value there.......
 
I would think ammo availability for the next 20 years would be of more concern, just back from CTC and hey look, no 7x57 on the self, a couple boxes of 6.5x55 and a large selection of 30-06, 270, 308.
 
My bold; me too anything pre 1890 is just so old hat:D

Indeed, 1940 gets you a Swedish Mauser with a nifty brass catcher, which is a hand loaders dream in preventing lost brass. :D

brass-catcher.jpg
:)


Guys in trailer parks have 30-06's, no trailer parks in Sweeden.

Well said. :D
 
It all depends on what you shoot.
Here in Oz if you weren't a big deer hunter a 6.5x55 is probably ample for everything.
Good sporterized M96 6.5x55s are easily available and the lightest bullets are better for medium game.
But if you hunt serious deer and elk then 7x57 is better.
So for a Canadian rifle the 7x57 has the edge.
The only drawback is that few companies chambered rifles in 7x57 these days, instead prefering 7mm-08, which is silly because the 7mm Mauser will match the '08 at lower pressures.
But everything short action is "hip" so we see 7mm-08s instead and US companies would happily see the 260 Rem replace the 6.5x55 too.
 
It all depends on what you shoot.
Here in Oz if you weren't a big deer hunter a 6.5x55 is probably ample for everything.
Good sporterized M96 6.5x55s are easily available and the lightest bullets are better for medium game.
But if you hunt serious deer and elk then 7x57 is better.
So for a Canadian rifle the 7x57 has the edge.

What edge are you talking about exactly? :confused:

Keeping in mind how many Elk sized Moose get harvested every year in Sweden with the 6.5 Swede. :D
 
What edge are you talking about exactly? :confused:

Keeping in mind how many Elk sized Moose get harvested every year in Sweden with the 6.5 Swede. :D
Fair question.
Bullet choice to begin with.
And I think that the bigger the game gets a bigger hole helps.
Ok, it's only by 20 thou but it makes a difference, IMO.
Plus, 6.5mm goes up to 160gr whilst 7mm goes up to 175gr.
A bit more bullet mass, same penetration.
 
I'd certainly have added a 7x57 mauser to my collection had they still been readily available at prices comparable to a K31 Swede Mausers, but the few that I've seen were pricier. It's a cartridge I'd be very curious to try out.

As this is the 2nd time in the thread that a "K31 Swede Mauser" or a "6.5x55 K31" was mentioned, I think we should clarify that a K31 is a Swiss straight-pull action rifle originally chambered in cal. 7.5 Swiss (not interchangeable with 7x57), and the Swedish Mauser (m96, or '38) is a bolt action originally chambered in 6.5x55 Swedish.
 
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