Huge difference in 357 mag load data

[devster55]

If you like flames, try some LilGun.

[devster55]

I'm not looking at a bunch of data at the moment, but I still say it doesn't seem yuge to me. Not with a slow burning powder requiring in the 16 gr. range.

There's also a difference in era. Newer data tend to be more conservative.

[devster55]

On a second note what powder would get me the best velocity with such a short barrel? I also have some 110’s I’m gonna load up too.

[ar15barrels]

I picked up some Remington 158gr SJHP’s and I’m looking to load them with H110.
I have compared 4 books and I’m having a hard time choosing a starting point.

If you give me your specific bullet length and your OAL and your barrel length, I can better tune Quickload, but here is what Quickload says for a generic 158 JHP:

Cartridge          : .357 Magnum (SAAMI)
Bullet             : .357, 158, Lapua SJHP EG410
Useable Case Capaci: 16.354 grain H2O = 1.062 cmｳ
Cartridge O.A.L. L6: 1.590 inch = 40.39 mm
Barrel Length      : 6.0 inch = 152.4 mm
Powder             : Hodgdon H110

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.25% 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

-12.5   87    14.00   1138     454   19916   6233     65.5    0.733
-11.3   88    14.20   1157     470   20768   6396     66.4    0.720
-10.0   89    14.40   1177     486   21658   6559     67.3    0.707
-08.8   90    14.60   1197     503   22585   6724     68.2    0.694
-07.5   91    14.80   1217     520   23567   6889     69.2    0.680
-06.3   93    15.00   1237     537   24588   7055     70.1    0.666
-05.0   94    15.20   1258     555   25651   7221     71.0    0.653
-03.8   95    15.40   1278     573   26758   7388     71.9    0.640
-02.5   96    15.60   1299     592   27913   7554     72.8    0.627
-01.3   98    15.80   1320     611   29122   7721     73.7    0.614
+00.0   99    16.00   1341     631   30390   7888     74.6    0.602  ! Near Maximum !
+01.3  100    16.20   1362     651   31718   8055     75.4    0.589  ! Near Maximum !
+02.5  101    16.40   1383     671   33111   8221     76.3    0.577  ! Near Maximum !
+03.8  103    16.60   1405     692   34572   8386     77.2    0.566  !DANGEROUS LOAD-DO NOT USE!
+05.0  104    16.80   1427     714   36106   8552     78.0    0.554  !DANGEROUS LOAD-DO NOT USE!
+06.3  105    17.00   1449     736   37717   8716     78.9    0.543  !DANGEROUS LOAD-DO NOT USE!

Results caused by ｱ 10% powder lot-to-lot burning rate variation using nominal charge
Data for burning rate increased by 10% relative to nominal value:
+Ba     99    16.00   1454     741   37849   8720     83.9    0.545  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba     99    16.00   1214     517   23656   6824     63.5    0.673

[the86d]

Lee: XTP: 15-16.7.

I really need to chrono some PMC 158gr SJHP, full house loads for comparison to what I load plated to...

[pennstater]

You could try 2400. Far more forgiving than H-110.