Question for the 7x57 owner loaders,

is 140gn@2900 an most common-easily achievable vel. from 22" barrel?
Tell me what vel. youve achieved and with what barrel length you achieved it from.
Im talking about loads that are safe-not extreme in pressure and not long throated. ie; c.o.l of about 3.025"
if youve achieved your velocities with a longer or shorter throated-loaded rig ,id appreciate you clarify that in your responce.

Both 7 X 57s have long throated 19" barrels. The info here may help you to bracket what you are looking for. Non of these loads appeared hot. Never really tried to push these rifles to gain Max. velocity. These are the highest velocities for each weight that were achieved.

120 grain psp. 43.5 grains 8208 avg.=3100 fps.

175grain RN., 39.2 grains, aa2520, avg.=2400 fps.

150grain psp. 47 grain aa4350, avg.= 2600fps.

130grain psp., 41 grains aa2520, 2700 fps.

with a strong rifle, a 24" + barrel length, bullet seated out properly, and a compressed load of one of the 4831s or 4350s with pressures running up to 58000 psi.(7-08 pressures) it most likly can safely be done.

22" barrel??? maybe. Should be close. roger

Old age is a high price to pay for maturity!!! Some never pay and some pay and never reap the reward. Wisdom comes with age! Sometimes age comes alone..

IMO you gonna be motoring it pretty hard to get 2900 with a 140 and a 22' barrel. One thing in your favor is I "THINK" most 7x57's are long throated fot the heavy bullets that are so often loaded in milsup ammo. This will let you optimize the case capacity. Notice also, however, the admonishment to use a strong rifle if you're gonna lean against the top end of the powder loads. H414 might be a powder to consider.
My 7x57 was in a Mark X and I was satisfied with @2750 from it using 140's. It killed everything I pointed it at.

My wife's 7x57 is a 22" MarkX. I seat the bullet out as long as possible. With 140 Accubonds I never reached 2900 high 2800s was the limit. In her rifle a load of RL 19 put the first 3 touching and just under 2800. She has taken everything from coyotes to Oryx and elk with one shot kills out to 275 yds. The PH in Namibia last year was very impressed with its performance.

Dear Trax:

I shoot a 7x57 Ackley in an 1898 Mauser action, and use an Oehler chronograph to obtain velocities. I can get well in excess of 2900 fps with this rig, but using a 24 inch barrel.

Try Reloder 22 and a soft 140 grain 7mm bullet like the Speer hot core.

I found the Hornady interlock to be a bit hard, driving pressures up.

The Nosler's both ballistic tip and partition were not too hard though, and pressures seemed fine.

What game do you want to shoot with this set up?

Sincerely,

Chris Bemis

I think you are a bit optinistic w/ a 22" barrel. My #1 7 mauser will not come anywhere close to 2900. It kills very well at 2750 and shoots cute little groups! Try 49g of Imr 4350 w/ your 140. It works safely in my # 1.

quote:

Originally posted by ramrod340:
My wife's 7x57 is a 22" MarkX. I seat the bullet out as long as possible. With 140 Accubonds I never reached 2900 high 2800s was the limit. In her rifle a load of RL 19 put the first 3 touching and just under 2800. She has taken everything from coyotes to Oryx and elk with one shot kills out to 275 yds. The PH in Namibia last year was very impressed with its performance.

That's the same as I do, doesn't get any better than that. Better safe than sorry.

2780 is about as hard as i can push a 140gr.sierra spitzer out of my g33/40 with a 23.5"tube and an ackley chamber. any more and i don't like primer pockets. if someone is getting 2900 or so,with 140's out of a mauser action( i specify mauser because there are stronger, modern actions), i'd say they're asking for a broken nose...either from the gun or from someone who don't like liars!

Dear Merlinron:

2780 fps for a 140 grain 7mm bullet in a 7x57 Ackley Improved is your top maximum before you expand your primer pockets? Even the Nosler #5 reloading manual, using a 22" Lilja barrel shows a maximum velocity for the regular 7x57 at 2892 fps with a 140 grain bullet using Reloder 19.

Do you have your chronograph set up properly?

That's not even a starting load for me with my Ackley. What powder, primers and cases are you using?

I'm using a 24" Douglas #2 SS airgauge barrel with a slightly big shoulder in the chamber. I run about .459-.460" shoulder diameter after fire forming using 257 Roberts +P Winchester brass. By the way, Douglas reamed the chamber; it was a long chambered barrel.

Sincerely,

Chris Bemis

I did reach 2860 FPS with the 140 gr. Nosler ballistic tip, but cut back to an even 2800 for my final load. Powder was W-760, Remington brass,
WLR primer. Rifle a Winchester M70 Featherweight.
The reason I dropped back was bolt lift was a tad sticky. By tad sticky I mean I as jur starting to feel resistance when opening the bolt. The grouping was great at .375". the slightly reduced load was more in the .75" range which is more than tolerable. After all, it's not a load meant for Prairie Dogs.
Winchester brass with it's slightly greater capacity might be able to squeak out a few more FPS, but I have a good load now so I figure, why bother.
FWIW,that same load in my custom mauer with 23" barrel finds the load to be too hot to digest. I'll have to fiugre out how much to cut back for that rifle although it's been shot strictly with Winchester 145 gr. Power Point ammo with which it is a consistantly .75" shooter.
I'm thinking that if I ned more sped than either 7x57 will deliver, I'll just go to a .280 Rem. or 7MM Rem. mag. Oh wait! I both of those as well and they seem to stay in the afe while the 7x57s always seem to be the ones that get to go out and play. I wonder why?
Paul B.

Dang Paul, you need to start taking that 7x57 to the factory matches. I've a rifle that aggs between .500 and .775 (5-5shot groups) and I often win.
My 7x47 was more like 1.25" but to be honest with you, I got it to just see how it would shape up against a 7-08 so I didn't lavish the time trying to really fine tune a load. I had heard so much noise from the traditionalist about the superiority of the 7x57 over the 7-08 that I just had to see for myself.
Final conclusion: There ain't no difference. But the 7x57 is what it is, an very honest, blue collar hunting rifle with a lot of tradition behind it.

My 22 inch ruger #1 puts 140 grain balistic tips out at 2895, with a 50 grain charge of H-414.
Acuracy is outstanding also.
It does as well with 140 grain tripple shocks too,
And almost as well with a 140 grain partition.
I don't know what kind of rifle you are shooting, But I would start at about 46 grains.
My Ruger has a very long throat,,,tj3006

thanks to all for replies;
a well noted gunwriter states 2900mv+ (140gn50gn4350) is no problem in his two 22" 7x57s,one of them an NULA., and that he has achieved 2950mv.
....also an Hornady manual shows 140-2900mv & 160gn-2800mv from 22" loaded between 3.00 & 3.050" length.
I had my previous 7x57M70fw 140gnBT 3.125"oal 53gn W760, however, I never clocked its speed.
No matter what I read in books or magazines I still like to ask the experienced joe the plumber guys what results they have achieved.
Im mostly content with 2800mv, but ill gladly accept all the speed I can get above that, if at acceptable pressure & accuracy.
A strong action,3.125"oal, canted rifling, maybe suffer an 23" tube?,and I reckon 2900 should safely be in the ballpark.

quote:

Originally posted by Trax:
Question for the 7x57 owner loaders,

is 140gn@2900 an most common-easily achievable vel. from 22" barrel?
Tell me what vel. youve achieved and with what barrel length you achieved it from.
Im talking about loads that are safe-not extreme in pressure and not long throated. ie; c.o.l of about 3.025"
if youve achieved your velocities with a longer or shorter throated-loaded rig ,id appreciate you clarify that in your responce.

Sounds to me like what you really want is a 7X64 or a 280 Remington Express!

quote:

Originally posted by Don Slater:

quote:

Originally posted by Trax:
Question for the 7x57 owner loaders,

is 140gn@2900 an most common-easily achievable vel. from 22" barrel?
Tell me what vel. youve achieved and with what barrel length you achieved it from.
Im talking about loads that are safe-not extreme in pressure and not long throated. ie; c.o.l of about 3.025"
if youve achieved your velocities with a longer or shorter throated-loaded rig ,id appreciate you clarify that in your responce.

Sounds to me like what you really want is a 7X64 or a 280 Remington Express!

Sounds like it to me also

I use H-414 and get about 2900 FPS and change.Good Luck

What is magic about 2900fps?

2,900 fps in a .280 Remington. Yes.
In a 7x57, Dangerous.

If I was getting 2,800 FPS I'd be happy.

IMO 2,900 is more aggressive than I want to be.

In my two long-throated Rugers (an M77 and a #1), I have found it possible to get close to 3000 FPS with 140-grain bullets. 22" barrels. My load is 53 grains of WW760 ball powder. This is a max load in my two rifles.

No magic it just works.Can't argue about something that hits that hard at a distance.Good Luck

Trax...I just checked my reloading data. Tis' easy to get 2800 fps and change (with excellent brass life) with a 140 gr bullet and H4350 or H414. You could get 2900 fps (I have) but the pressure is more than likely over (perhaps way) 60K. Ain't nothing you you can kill at 2900 fps that you can't at 2800. Personally, I prefer 160's at 2600+. R-15 and the 160 gr Partition are your friends

A quick look at the hodgdon web page data center, shows a 140 grain bullet pushed by a 47 grain charge of H-414 or W-760 , (the same powder) generates 46,000 lbs.
My load of 50 grains witch gives me 2895 , should certainly be safe in my #1 and I will try and work up to the same charge in custom VZ-24 mauser i am working on when the time comes...tj3006

quote:

Originally posted by Code4:
2,900 fps in a .280 Remington. Yes.
In a 7x57, Dangerous.

Not necessarily so. Remember that SAMMI standard pressure for the 7x57 isset up for all thoase old weak (?) 1893 and 1895 Mausers that came over here as milsurp, Most, if not all modern sporters today come chambered in artridges that generate a hell of a lot higher pressure than the 45,000 PSI of th 7x57. So if a rifle made today is capable of handling the roughly 65,000 plus PSI of a hot magnum round, then why in the is that same action not able to hold a 7x57 mauser loaded to that same pressure level. Even the so-call Plus P ammo for the 7x57 is watered way down beloaw it's potential.
I can reach 2860 FPS in my Winchester m70 Featherweight but at the high temperature when I'm doing most of my load work up, discretion becomes the better part of valor. I'm positive my load would be safe under temperature conditions normal at where I hunt, but is I get one of the very southernmost areas for my tag draw, temps can come damn close to and even into the 90's.
Paul B.