338 Fed Quick Load Request Please

Divernhunter

Handloader
Apr 1, 2009
725
55
I used some book data for the 338Fed and 210gr Sirocco Swift bullets. It was Starline brass, win mag primers and 45.5grs of Win 748 for 2441FPS and SD 4 in my short barrel rifle.
I also tested a 200gr Nosler BT bullet with same brass/primer and 50.5grs of Win 748 for 2592FPS and SD 1.
OAL for both was 2.280"

My question is how much more powder can I safely use for the 210gr Sirocco load?? I understand there is 10grs difference in bullet weight and also a difference in the jacket material (Swift bullet is bonded and 100% pure copper) but would like to safely get a bit more FPS with the Swift bullet. This is what I was thinking about for a Wisconsin Whitetail deer hunt.

Thanks for any help you can give me.
 

DrMike

Ballistician
Nov 8, 2006
35,461
2,229
Code:
Cartridge          : .338 Federal
Bullet             : .338, 210, Swift Scirocco
Useable Case Capaci: 44.356 grain H2O = 2.880 cm³
Cartridge O.A.L. L6: 2.820 inch = 71.63 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Winchester 748

Predicted data by increasing and decreasing the given charge,
incremented in steps of 1.0% 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

-10.0   92    40.32   2279    2422   42162   6217     96.3    1.283
-09.0   93    40.77   2304    2475   43592   6280     96.7    1.264
-08.0   94    41.22   2329    2529   45077   6341     97.0    1.246
-07.0   95    41.66   2353    2583   46616   6399     97.4    1.227
-06.0   96    42.11   2378    2638   48213   6456     97.7    1.209
-05.0   97    42.56   2403    2693   49873   6509     98.0    1.192
-04.0   98    43.01   2428    2748   51597   6560     98.3    1.174  ! Near Maximum !
-03.0   99    43.46   2452    2805   53384   6609     98.5    1.157  ! Near Maximum !
-02.0  100    43.90   2477    2861   55247   6654     98.8    1.141  ! Near Maximum !
-01.0  101    44.35   2502    2919   57181   6697     99.0    1.124  ! Near Maximum !
+00.0  102    44.80   2526    2976   59193   6737     99.2    1.108  ! Near Maximum !
+01.0  103    45.25   2551    3034   61287   6774     99.4    1.092  !DANGEROUS LOAD-DO NOT USE!
+02.0  104    45.70   2575    3093   63464   6808     99.5    1.076  !DANGEROUS LOAD-DO NOT USE!
+03.0  105    46.14   2600    3152   65737   6839     99.7    1.061  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    46.59   2624    3211   68102   6867     99.8    1.046  !DANGEROUS LOAD-DO NOT USE!
+05.0  107    47.04   2649    3271   70568   6891     99.9    1.031  !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    102    44.80   2632    3230   71937   6439    100.0    1.032  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    44.80   2375    2630   48042   6686     94.1    1.209
 

Divernhunter

Handloader
Apr 1, 2009
725
55
have the Swift reloading manual and looked at the Hodgdon website. I was just wondering what Quick load had to show
 

Divernhunter

Handloader
Apr 1, 2009
725
55
Thanks DrMike. I posted my 2nd post before your post showed up on my computer. The quick load is less than the Hodgdon data and as I remember the Swift book data also. Thank you for taking the time to do this for me.
 

Blkram

Handloader
Nov 25, 2013
1,988
539
Interesting results with the 200 gr BT! What was the accuracy like?

I have the 200 gr AB that I want to develop a load for in my Sako with a 22" Wilson carbon fibre barrel.
I have found reference for a load of 50.6 gr of Re-17 that is supposed to produce 2652 fps in a 24" barrel. Will see how working up a load in my rifle performs. I have Federal brass and F210 and 210M primers. Also have some WLRM primers too, if that works better.
Hopefully I can get a SD as low as yours!
 
Top