Oddly Savage has chosen this twist, anyone know just how heavy a bullet this twist will stabilize? Hoping to get the 150 gr. Nosler Ballistic Tips to work.

I think Savage knows something that we don't. They still have a 7 mm Mag at 9.5 twist, and then the 7-08 at 11.5

Sounds wrong to me especially since Remington still shows a 1-9 1/4 twist in the 7-08.

Please keep us informed as to how that 1-11.5 shoots.

Savage found through testing that the sweet spot for this calibre was the 11.5 twist since almost all commercial ammo is 140 grains. Anyone wanting to go heavier than that should be looking at a bigger case, the 7mm-08 simply doesn't have the case capacity for heavier bullets. I can't disagree with that since I have two from them and I've never used anything larger than 140 grains.

I don't know what would happen. I know with my 1/9 Rem it shot heavier bullets well. (150s & 160s) A particularly effective bullet I found for east coast hunting was the 154gr Hornady Round Nose.
Often a rifle with a slower twist will shoot round nosed bullets that it will not in a spitzer style. I don't know enough ballistics to know why this is. Case in point was the .244 Remington with it's /14 twist. It would shoot round nosed 100gr bullets but not spitzers.

quote:

Originally posted by cobra:
Savage found through testing that the sweet spot for this calibre was the 11.5 twist since almost all commercial ammo is 140 grains. Anyone wanting to go heavier than that should be looking at a bigger case, the 7mm-08 simply doesn't have the case capacity for heavier bullets. I can't disagree with that since I have two from them and I've never used anything larger than 140 grains.

Doesn't have the case capacity for bullets heavier thant 140 grain??????

The 7X57 does this case have enough capacity for bullets heavier thant 140 grain?

How much capacity does it take for bullets heavier than 140 grains??

The 175 grain 7mm bullet has accounted for a hell of a lot of game in the 2200 to 2400 FPS range including Cape Buffalo as well as a lot of Elephant
I believe the 7-08 can push a 175 in the 200 FPS plus range

quote:

Originally posted by cobra:
Savage found through testing that the sweet spot for this calibre was the 11.5 twist since almost all commercial ammo is 140 grains. Anyone wanting to go heavier than that should be looking at a bigger case, the 7mm-08 simply doesn't have the case capacity for heavier bullets. I can't disagree with that since I have two from them and I've never used anything larger than 140 grains.

Not to pick on you Cobra, but I agree with jwp475 on this one. The .308 has nearly identical case capacity and shoots 165's and 180's frequently and just fine. While I do agree that the 140 is the "standard" bullet weight for the 7mm08, the cartridge is certainly capable of shooting heavier bullets effectively. Now if you want to shoot 160's at 3000 fps then your statement is correct, but 160's at 2500 fps damn sure work.

quote:

Originally posted by daniel77:

quote:

Originally posted by cobra:
Savage found through testing that the sweet spot for this calibre was the 11.5 twist since almost all commercial ammo is 140 grains. Anyone wanting to go heavier than that should be looking at a bigger case, the 7mm-08 simply doesn't have the case capacity for heavier bullets. I can't disagree with that since I have two from them and I've never used anything larger than 140 grains.

Not to pick on you Cobra, but I agree with jwp475 on this one. The .308 has nearly identical case capacity and shoots 165's and 180's frequently and just fine. While I do agree that the 140 is the "standard" bullet weight for the 7mm08, the cartridge is certainly capable of shooting heavier bullets effectively. Now if you want to shoot 160's at 3000 fps then your statement is correct, but 160's at 2500 fps damn sure work.

+1... There lies the problem people want the 7-08 to shoot as fast as a 7mm mag.
I have a light wieght about 5 pounds (no scope) 7X57 and the one thing that makes it so much fun to shoot is the fact that the 7X57 is not loaded to 60,000 PSI plus in the pressure department and it has such of a mild report. It is no speed demon nor is it supposed to be.

Wasbeeman.

Longer bullets need faster twist to stabalize. Round nose bullets are shorter than spitzers of the same weight.

I would think 11.5 would work for 150 gr bullets. The only way to know is load them up and shoot some.

On another forum there is a 7-08 barrel for sale and I thought maybe I'd buy it. I have a 270 and to me 7MM bullets should start at 150 grains. I think I'll pass on the barrel.

I actually think a 154 grain RN at 2400 fps or a 175 gr RN at 2200 fps, is a great wood's range hunting load. ( easily a 200 yd and under load)..

I have to admit, I would not be in line to buy a 7mm with a one in 11.5 twist, regardless of how cheap the rifle was, unless I was just purchasing it for the action and stock..

[QUOTE]Originally posted by seafire2:
I actually think a 154 grain RN at 2400 fps or a 175 gr RN at 2200 fps, is a great wood's range hunting load. ( easily a 200 yd and under load)..

I have to admit, I would not be in line to buy a 7mm with a one in 11.5 twist, regardless of how cheap the rifle was, unless I was just purchasing it for the action and stock..[/QUOTE



+1........

FWIW I was able to get right at 2600 from my 7-08 and the 154gr RN bullet.

I'm having a 284 build using a Bartlein 1/10 twist barrel and that twist work good from 140 to 160gr bullets.

I used a 1/9 twist Kreiger barrel for my wife 280AI. Hard to say on 7mm twist be interesting to find out why they picked that twist.

It's the length of the bullet that matters, not the weight. My 7-08AI has a 1:11 twist and stabilizes 140gr Ballistic Tips and puts into 1/2" groups. There are a lot of 7mm bullets that aren't any longer than the 140gr Ballistic Tip. You will probably have to stay away from the Nosler Ballistic Tip, Swift Scirocco, and Barnes because of their length if you want to shoot something heavier than 140gr.

they used this twist for the same reason they are using the 1-13 in their f-class 308 rifles.
to shoot really small groups.
i am hoping to get either one of these bbls.
the 30 cal or the 7mm.
they also would have some very exciting applications for cast bullet shooting.
for instance a 180 gr cast bullet at 2400 fps with supreme accuracy has some uses.

Kudos to Savage for using the 1-11 1/2" twist.
I'm a slow twist guy, because that's what I grew up with. And I'm happy to hear that it delivers good accuracy with the 140gn bullet.
I recently bought one of the new FN Winchester Model 70's in 7-08, which has a 1-9 1/2" twist. It shoots 140 gn Partitions very well; 3 shots into 1/2" at 100 yards.
But, I would sure like to get my hands on one of the Savages with the slow twist. I have varmint loads for my 7x57's and the 7-08 using 100 gn Sierra's and the 110gn Speer TNT(I think I'm right on that weight? Maybe 115gns?? 120?? LOL).
I think Savage's slow twist would be ideal for shooting these light weight bullets.

I am not one that buy's into the slow twist is more accurate

YES. You can go heavy with bullets.
My most accurate 7X57 is loaded with a fairly slow powder H4831 with a medium volume factor (takes up medium space in the case).
The 7X57 Mauser (or 7X57R) case can handle powder into the neck a bit yielding mild compression of the powder.
Worth noting is that heavier bullets prefer a fast twist. Mine are 8.66/1 or 9/1 twist. I shoot up to 175 Partitions and get under 1 inch groups.
But, I have other 7X57's that shoot 166 grain aluminum tip Hornady's under an inch as well. Same twist range.
I never had any of my handloads have a flier. Groups have been consistent. Great caliber.

As for the 7-08, I never bought one because of the small case capacity as compared to the 7X57.
Good luck/fun.

quote:

Originally posted by jwp475:

quote:

Originally posted by cobra:
Savage found through testing that the sweet spot for this calibre was the 11.5 twist since almost all commercial ammo is 140 grains. Anyone wanting to go heavier than that should be looking at a bigger case, the 7mm-08 simply doesn't have the case capacity for heavier bullets. I can't disagree with that since I have two from them and I've never used anything larger than 140 grains.

The 7X57 does this case have enough capacity for bullets heavier thant 140 grain? How much capacity does it take for bullets heavier than 140 grains?? The 7X57 does this case have enough capacity for bullets heavier thant 140 grain?



The 175 grain 7mm bullet has accounted for a hell of a lot of game in the 2200 to 2400 FPS range including Cape Buffalo as well as a lot of Elephant
I believe the 7-08 can push a 175 in the 200 FPS plus range

quote:

Originally posted by Lamar:
they used this twist for the same reason they are using the 1-13 in their f-class 308 rifles.
to shoot really small groups.
i am hoping to get either one of these bbls.
the 30 cal or the 7mm.
they also would have some very exciting applications for cast bullet shooting.
for instance a 180 gr cast bullet at 2400 fps with supreme accuracy has some uses.

Lamar,
Not sure when the last time you were at an F Class match but most are shooting 200gr. + bullets now and a 1 - 13 won't cut it with those canoes. Some are using up to 8 and 9 twist with the very heavy .308's. Many of the Palma shooters are also no longer using the 13 twist, most go with a 11 or 12 some using a 10. Me I will always err to the faster twist as I have found no detriment to doing so.

quote:

Originally posted by jwp475:
I am not one that buy's into the slow twist is more accurate

I am not, either, with hunting rifles, but it’s just a fact that to get the very best accuracy with a given bullet, a certain twist rate is necessary. That is why you never see 1/7 twist 6ppc benchrest barrels (70 grain flat base bullets). Most hunters, even varmint hunters, get adequate accuracy with a relatively fast twist and a wide range of bullet weights. I guess get savage’s decision for a slow twist in the 7mm-08, but as a bandleader and heavy bullet proponent, I like 1/9.

quote:

Originally posted by jwp475:
I am not one that buy's into the slow twist is more accurate

I prefer faster twists also.

I have a savage bolt with a 1in7 223 it puts 52gr match bullets into very tiny groups.

If given the chance I'll take a fast twist over a slow one.

I had a .308 Match rifle with a 1-11 twist that did well with 190 grain Sierra Match kings... Not a 7mmm but not far off... 1-11.5 should be fine in the 7-08 with anything in the 150-160 weight bullet. But again...with off the shelf ammo the 7-08 is really a 120-140 grain proposition. Not arguing it can handle heavier handloads.

Gundog it has been a while.
if you notice the thread is 10 years old...lol

anyway my intentions were strictly for cast bullet shooting at higher velocities.
they do better with slower twist barrels because it helps them hang onto the rifling better.[lower precession stress]

anyway since that time I had a 10 twist barrel built for a 30X57 project rifle, and the limit is now recoil not twist rate, so I'm happy with it.

What is the mag box size on a savage 7mmx08 . Can you even load >140gr without burying the bullet in the case in a Savage.

After all a 7mx08 is no Creedmoor

quote:

Originally posted by Lamar:
Gundog it has been a while.
if you notice the thread is 10 years old...lol

anyway my intentions were strictly for cast bullet shooting at higher velocities.
they do better with slower twist barrels because it helps them hang onto the rifling better.[lower precession stress]

anyway since that time I had a 10 twist barrel built for a 30X57 project rifle, and the limit is now recoil not twist rate, so I'm happy with it.

Lamar,
I had not noticed the date on the thread.LOL