I picked up a 7x57 remington classic a while back and I'm trying to work up a "modern rifle" load instead of the anemic loads that are in all the current manuals. Anyone out there pushing the ol girl into the 2500-2600fps range? I have picked up a copy of the Hagel book I just havn't had time to work up his 4350 load with 50grs. Thanks.

50grs of 4350 and a 175 is 13.0grs over Hodgdon's current published max of 37.0grs. Ackley also lists loads for the 175 using 4350 (and 4064) that run (according to him), 2500-2600 fps, also way over current published data. You might want to run the #s in QuickLoad and see what they say.

I've reached 3100 fps in the AI version, but with lighter (139gr) bullets.

While I load the wife's 7x57 to modern pressure never used a 175 that I remember.

Looking at my OLD Vol II Hornady book where they reference either stopping with a full case or .0005 head expansion they list max as 47.7grs. Would concern me a touch when Nosler and Hodgdon list 49gr as max for a 280.

QL calls it hotter than I want. So WORK UP

  Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 175, Hornady RN 2855
Useable Case Capaci: 52.833 grain H2O = 3.430 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H4350

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   84    40.00   2189    1863   36514   8801     93.4    1.484
-18.0   86    41.00   2241    1952   38919   9051     94.4    1.439
-16.0   88    42.00   2293    2042   41472   9292     95.3    1.396
-14.0   90    43.00   2344    2135   44187   9523     96.1    1.355  ! Near Maximum !
-12.0   92    44.00   2395    2230   47075   9742     96.9    1.315  ! Near Maximum !
-10.0   94    45.00   2447    2326   50149   9949     97.6    1.277  ! Near Maximum !
-08.0   97    46.00   2498    2424   53421  10143     98.1    1.240  !DANGEROUS LOAD-DO NOT USE!
-06.0   99    47.00   2549    2524   56906  10324     98.7    1.205  !DANGEROUS LOAD-DO NOT USE!
-04.0  101    48.00   2599    2625   60621  10490     99.1    1.171  !DANGEROUS LOAD-DO NOT USE!
-02.0  103    49.00   2650    2728   64584  10641     99.4    1.138  !DANGEROUS LOAD-DO NOT USE!
+00.0  105    50.00   2700    2833   68814  10775     99.7    1.106  !DANGEROUS LOAD-DO NOT USE!
+02.0  107    51.00   2750    2939   73336  10893     99.9    1.075  !DANGEROUS LOAD-DO NOT USE!
+04.0  109    52.00   2800    3046   78173  10993    100.0    1.046  !DANGEROUS LOAD-DO NOT USE!
+06.0  111    53.00   2849    3154   83354  11077    100.0    1.018  !DANGEROUS LOAD-DO NOT USE!
+08.0  113    54.00   2898    3264   88911  11153    100.0    0.990  !DANGEROUS LOAD-DO NOT USE!
+10.0  115    55.00   2947    3374   94881  11225    100.0    0.963  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba    105    50.00   2795    3035   80637  10390    100.0    1.036  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    105    50.00   2564    2554   57157  10759     96.1    1.198  !DANGEROUS LOAD-DO NOT USE!
   

H414 is great in the 7x57. Working that up might get you close.

My take and use of the 7x57 is that the 175 is not the optimum bullet for it; I use 140s. If I want to use a heavier bullet, on heavier game, I use a 280 ACK, or 7mm Mag. (I just go to a bigger caliber)
Not enough powder for a 175; they go pretty slow in the 7x57, and I have a reamer cut for the 140. Following the Rigby 275, High Velocity idea.

quote:

I use 140s

I use a 140 accubond in the wife's 7x57. Uses it for everything up to and including Elk. Never an issue. Love the 160s my 280PDK and 7mag.

If I wanted a 175 simply because it used to be loaded with a heavy bullet. I would leave the pressure lower as well. But that is just me.

Don't remember using 414 but burned a lot of RL15. I would look at RL17 as well.

In a modern rifle you can generally do better than a 7mm-08 for velocity, but it is not a 280, even with the long throat. If all I had was the 175s I would use them, but for an all round heavy for caliber bullet I use the 160s. Partitions work in mine, Norma load data, 2500 fps or so for an accurate load using MRP.

I have rolled some 175s with h414 at 44, 44.5, 45, and 45.5. I have gotten to shoot the first two but not over my chrony. Only load I have gotten to test speed on was a full load of 4350 and it was right around 2375.

If i wanted to go laser flat I could shoot one of my 280s or 7 mag. But with this rifle I'm wanting to have a heavy hitter which is another reason i'm loading the 175s. Of the loads I've tested so far all at max current loads are under an inch. Thanks for the input.

I don't try to turn my 7x57 into a .280. I use 50.5 grains of N-165, the book max from Nosler. I don't have my notes in front of me so I can't give you a real-world velocity but Nosler lists it as over 2500 fps. I have used it on everything from whitetails to a big kudu bull and not found it wanting, I've also never recovered a bullet.

Edited to add: I'm using 175gr. Partitions, not RN as the original poster indicated.

And re: the 7mm 175 gr RN bullets. What do we use nowadays and where do we get them? Specifically the round noses...

midway had a run on factory seconds before christmas that i stocked up on. other than that is it up to the kindness of other how want to part with them...

Ramrod,

could you run some results using H414 and the hornady 175?

I left the max pressure per SAAMI. So it is going to show dangerous in the 50,000 range. Simply look for the pressure range you are considering.

Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 175, Hornady RN 2855
Useable Case Capaci: 52.833 grain H2O = 3.430 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Hodgdon H414

Predicted data by increasing and decreasing the given charge,
incremented in steps of 2.0% of nominal charge.
CAUTION: Figures exceed maximum and minimum recommended loads !

Step    Fill. Charge   Vel.  Energy   Pmax   Pmuz  Prop.Burnt B_Time
 %       %    Grains   fps   ft.lbs    psi    psi      %        ms

-20.0   75    38.80   2154    1803   32843   9023     92.6    1.550
-18.0   77    39.77   2206    1892   35040   9291     93.7    1.509
-16.0   79    40.74   2258    1982   37377   9550     94.7    1.467
-14.0   81    41.71   2310    2074   39841   9798     95.6    1.422
-12.0   83    42.68   2362    2169   42444  10035     96.4    1.380
-10.0   85    43.65   2414    2265   45210  10258     97.2    1.340  ! Near Maximum !
-08.0   87    44.62   2466    2363   48151  10468     97.8    1.301  ! Near Maximum !
-06.0   89    45.59   2517    2462   51280  10664     98.4    1.263  !DANGEROUS LOAD-DO NOT USE!
-04.0   90    46.56   2568    2563   54609  10845     98.9    1.227  !DANGEROUS LOAD-DO NOT USE!
-02.0   92    47.53   2619    2666   58153  11009     99.3    1.192  !DANGEROUS LOAD-DO NOT USE!
+00.0   94    48.50   2670    2770   61929  11156     99.6    1.159  !DANGEROUS LOAD-DO NOT USE!
+02.0   96    49.47   2721    2876   65955  11286     99.8    1.127  !DANGEROUS LOAD-DO NOT USE!
+04.0   98    50.44   2771    2983   70249  11397    100.0    1.095  !DANGEROUS LOAD-DO NOT USE!
+06.0  100    51.41   2820    3091   74836  11489    100.0    1.065  !DANGEROUS LOAD-DO NOT USE!
+08.0  102    52.38   2870    3200   79739  11570    100.0    1.036  !DANGEROUS LOAD-DO NOT USE!
+10.0  104    53.35   2919    3310   84986  11646    100.0    1.008  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     94    48.50   2776    2994   73797  10736    100.0    1.078  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     94    48.50   2518    2465   50290  11091     95.4    1.267  !DANGEROUS LOAD-DO NOT USE!
  

I shoot a lot of the 175-178 grain in my Mauser. All loaded "light" if you want to call it that. All shot and 100 yards or less on whitetails. Why do I shoot them? Just so happens my Mauser likes them best for some reason. I have tried the 140s and they come close. Just have a particular rifle.

quote:

Just so happens my Mauser likes them best for some reason

Can understand that. First 7x57 I built was a sporterized barrel. Only thing I could get to group were heavies.

Use what works.

quote:

Originally posted by ramrod340:

quote:

Just so happens my Mauser likes them best for some reason

Can understand that. First 7x57 I built was a sporterized barrel. Only thing I could get to group were heavies.

Use what works.

Amen to that! And can I get a Hallelujah brothers?

Halleluja!

Bob Hagel was one of my favorite authors and had lots of real world experience, but I have never been able to fathom the 7x57 loads he put in his "Game Loads..." book. Other cartridges he loaded pretty warm, but those for the 7x57 were just insane. Just my opinion, of course.

These loads were worked up in a current Ruger #1.

Please work up appropriately in your rifle.

175 gr. Horn IL.

51.0 RL22. 2,600 fps.
50.0 Ramshot Hunter. 2,575 fps.

the loads he listed for the 7x57 seem on the ragged edge, haven't load any that extreme. waiting for the weather to break to so I can chrony the current loads i have worked up. I have looked back at hornady vol2.

A max load of H414 will get you there as will RL-22 and 4350..

I won't quote my load as I have a long magazine and a long throat, and use 7x57 Ackley IMP loads in it, and get more velocity than you are asking for.

I prefer the 175 and 160 gr. Nosler partitions, and in that order for elk...Those bullets at 2600 plus a bit more in my gun have worked well on big bulls, and on a lot of African stuff.