Originally Posted by gunzo
Saami chamber psi is 51,000 for 7x57.

Remington 700 is clearly capable of handling 65,000, as in some Weatherby chamberings.

Brass is just a gasket, some might hold better than others. Necking down 8x57 Lapua could produce the best brass in the chambering.

Nothing says you can or should load it to the wall, but at equal pressures the old 7 is as capable as anything above ,below or beside it.

It can outclass a 7mm08 & comparing it to a 284 Win. or 7mm06 is fruitless. The later 2 can outpace, but only by a slim margin. Like picking the pepper out of fly chit.




That's kind of what I was thinking.

OP's load, depending on brass is probably around 53K psi. He's about 3 grains away from 65K psi.


Code
Cartridge          : 7 x 57 mm Mauser (SAAMI)
Bullet             : .284, 154, Hornady SST InterLock 28302
Useable Case Capaci: 51.478 grain H2O = 3.342 cm³
Cartridge O.A.L. L6: 3.071 inch = 78.00 mm
Barrel Length      : 24.0 inch = 609.6 mm
Powder             : Alliant Reloder-17 *T

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.02% 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

-10.2   88    44.00   2622    2352   42863   9215     99.5    1.344
-09.2   89    44.50   2651    2403   44329   9284     99.7    1.323  ! Near Maximum !
-08.2   90    45.00   2679    2455   45847   9348     99.8    1.302  ! Near Maximum !
-07.1   91    45.50   2708    2507   47420   9406     99.9    1.283  ! Near Maximum !
-06.1   92    46.00   2736    2560   49050   9459    100.0    1.263  ! Near Maximum !
-05.1   93    46.50   2764    2612   50736   9506    100.0    1.244  !DANGEROUS LOAD-DO NOT USE!
-04.1   94    47.00   2792    2665   52492   9550    100.0    1.225  !DANGEROUS LOAD-DO NOT USE!
-03.1   95    47.50   2820    2719   54309   9592    100.0    1.207  !DANGEROUS LOAD-DO NOT USE!
-02.0   96    48.00   2847    2772   56195   9634    100.0    1.189  !DANGEROUS LOAD-DO NOT USE!
-01.0   97    48.50   2875    2826   58149   9675    100.0    1.171  !DANGEROUS LOAD-DO NOT USE!
+00.0   98    49.00   2902    2880   60179   9715    100.0    1.154  !DANGEROUS LOAD-DO NOT USE!
+01.0   99    49.50   2929    2934   62288   9754    100.0    1.136  !DANGEROUS LOAD-DO NOT USE!
+02.0  100    50.00   2956    2988   64478   9793    100.0    1.120  !DANGEROUS LOAD-DO NOT USE!
+03.1  101    50.50   2983    3043   66751   9831    100.0    1.103  !DANGEROUS LOAD-DO NOT USE!
+04.1  102    51.00   3010    3098   69116   9868    100.0    1.087  !DANGEROUS LOAD-DO NOT USE!
+05.1  103    51.50   3037    3154   71574   9903    100.0    1.071  !DANGEROUS LOAD-DO NOT USE!

Results caused by ± 3% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 3% relative to nominal value:
+Ba     98    49.00   2938    2951   64018   9581    100.0    1.126  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 3% relative to nominal value:
-Ba     98    49.00   2861    2799   56513   9866    100.0    1.183  !DANGEROUS LOAD-DO NOT USE!

You didn't use logic or reason to get into this opinion, I cannot use logic or reason to get you out of it.

You cannot over estimate the unimportance of nearly everything. John Maxwell