7-6.5x47

[nosualc]

Anybody ever do a 7mm wildcat based on a 6.5x47 Lapua case? I'm not seriously proposing it, just thought I'd put it out there as food for discussion.

I'm thinking the 6.5x47 case might not have enuf butt to get the bigger 7mm bullets moving fast enough to make it worth the trouble.

-nosualc

 

[Fordnutter]

MMmmmmm Interesting. I could see an application for this cartridge in a short action repeater which would then allow a high BC bullet like the 162gr Amax to magazine feed & not have the projectile jammed right in the case robbing precious powder capacity. Not a silly idea at all

 

[Judd]

From everything I have read that case has a hard enough time getting a 140gr 6.5mm bullet to speed I don't think the capacity exists to get a 162 up to an acceptable speed.

 

[BigDMT]

the 7mm BR round has proven to be extremely accurate in the 200 yard game. I suppose that round would be like a suped up 7mm BR. Probably could take 7mm BR load data speeds and expect 50-100 fps faster from this wildcat.

speed of the bullets will depend on barrel length. with a 29"-30" barrel I'd bet it would be easy to hit 2500-2600+ fps with a 162 gr bullet

 

[guidom]

what would you call an acceptable speed for the 6.5x47?

 

[SongdogHunter]

i mocked one up... as I'm a fan of the 7BR figured the 7 x 47L would be better.




SDH

 

[mattri]

How would this compare to a 7mm-08?

 

[BigDMT]

How would this compare to a 7mm-08?

similar performance I'm sure, but a good bit more compact to allow for more seating depth options with VLD style bullets.

 

[SongdogHunter]

the 7-08 holds about 5 grains more capacity but not a whole lot more velocity is gained by it.

SDH

 

[mattri]

BigDMT- you mean in realtion to COL in a short action box correct?

 

[nosualc]

Do you think there would be any accuracy advantages to a 7x47L over a 7-08? More efficient case? Small primer?

Apparently some of you have had the same idea. Fun to postulate...

-nosualc

 

[SongdogHunter]

I definitely think its worth doing. Less powder burnt for close to same velocity. If it shoots like my 6x47L and 6.5x47L it will be a winner. Not to mention it would complete the trifecta.

My intention is the 120-140 grain bullets.

SDH

 

[jadams]

Yes, It was done years ago. It was called 7mm IHMSA . The bullet of choice is a 7mm 140
or the Hornady 162. The powder used was / is H-4895 in a 15" pistol barrel. The max. vel. out of a 15" pistol barrel is 2400 fps. The case used was a 300 sav. necked down to 7mm
no forming required. The 300 Sav case is .050" longer than a 47 Lapua. A lot of shooters reformed the .22-250 case. You will find it in the Hornady reloading manual.
John

 

[Erik Cortina]

From everything I have read that case has a hard enough time getting a 140gr 6.5mm bullet to speed I don't think the capacity exists to get a 162 up to an acceptable speed.

What do you mean by "to speed"?

I get 2,930 fps. from a 30" barrel in competition gun and 2,950 fps. from hunting rifle using 25" barrel. And both can go faster but that's where the accuracy is best. Both with 139 and 140 grain bullets.

 

[BigDMT]

BigDMT- you mean in realtion to COL in a short action box correct?

That too if using a repeater action. But I was more talking about case capacity by being able to seat the bullet out far enough so the base does not take up any case body powder capacity. Thus allowing more speed if desired and ability to make a wider range of pressure adjustments to lower SD's.

 

[FilippoMo]

From everything I have read that case has a hard enough time getting a 140gr 6.5mm bullet to speed I don't think the capacity exists to get a 162 up to an acceptable speed.

What do you mean by "to speed"?

I get 2,930 fps. from a 30" barrel in competition gun and 2,950 fps. from hunting rifle using 25" barrel. And both can go faster but that's where the accuracy is best. Both with 139 and 140 grain bullets.

I wonder if you could provide a reamer print,what velocity can you get from 160grs.
bullet?Also if available useful barrel life.
Thank you
Filippo

 

[Erik Cortina]

From everything I have read that case has a hard enough time getting a 140gr 6.5mm bullet to speed I don't think the capacity exists to get a 162 up to an acceptable speed.

What do you mean by "to speed"?

I get 2,930 fps. from a 30" barrel in competition gun and 2,950 fps. from hunting rifle using 25" barrel. And both can go faster but that's where the accuracy is best. Both with 139 and 140 grain bullets.

I wonder if you could provide a reamer print,what velocity can you get from 160grs.
bullet?Also if available useful barrel life.
Thank you
Filippo

About 2,000 + on the competition gun, much more on the hunting gun.
6.5x47 Lapua, .290" neck, .175" freebore.
I don't shoot 160's.

 

[FilippoMo]

What bullet(s) and distance for competition shooting?
thanks
Filippo

 

[Erik Cortina]

What bullet(s) and distance for competition shooting?
thanks
Filippo

139 gr. Lapua Scenar. 300 yards - 1,000 yards.