350 Remington Mag Quickload

[D21ALASKA]

Hey Guys, I'm hoping someone may be able to run a quickload for me please. I'm getting some numbers on the chrono that aren't adding up to the manual and want to stop and do a double check before I continue.
I'm using Accurate 2015 with 225 Partitions and max book is 53gr for 2621 fps. Just started my work up and I'm up to 50.5gr and 2 shots were 2708/2691fps respectively. Which was about a 200fps jump from 50gr. I may have a hot batch of powder but that's a heck of a jump for .5gr difference in powder. Brass/primers all look fine and no heavy bolt lift but I'd just like to double check. Going to back off a bit and try to find a node though not sure it'll be there with a jump like that.

350 Remington Mag
225gr Partitions
Accurate 2015
Federal 215M Primer
Remington Brass
2.8" COAL
22" Barrel

Only thing different in my equation than book is the primer. They're using CCI 250's.

Thank you as always for the help. And as usual I'm open to suggestions from the experienced on this cartridge. My first personal go round with it.

Sent from my SM-A102U using Tapatalk

 

[DrMike]

The 350 RM was a personal favourite cartridge. It hits hard and always generated good accuracy. I used the 200 grain TSX most often in this cartridge, which developed good velocities and excellent accuracy.

AA2015 is a good powder choice. You can get more velocity from some other powders, but the accuracy was always good for me with that powder. I recently sold my 350 RM, but I still have the data generated. When I shot 225 grain PT with AA2015, I was using CCI250. Velocity was not as high as some report, but the accuracy was good. I did achieve higher velocities with some other powders, but AA2015 did give me the best accuracy. Velocities with AA2015 were in the 2500 fps range, which is plenty good for moose, elk, grizzly, and about anything smaller. Using the F215M, you may see a slight increase in velocity since the primer generates a greater brisance, but I wouldn't think it would be significant.

QL generates the following profile:

Cartridge          : .350 Rem. Mag.
Bullet             : .358, 225, Nosler PART SP 44800
Useable Case Capaci: 58.202 grain H2O = 3.779 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Accurate 2015

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   90    46.35   2392    2859   45696   6254    100.0    1.242
-09.0   91    46.87   2414    2913   47135   6288    100.0    1.225
-08.0   92    47.38   2437    2966   48617   6321    100.0    1.208
-07.0   93    47.90   2458    3019   50145   6355    100.0    1.191
-06.0   94    48.41   2480    3073   51719   6388    100.0    1.175
-05.0   95    48.93   2502    3127   53342   6420    100.0    1.160
-04.0   96    49.44   2523    3181   55016   6452    100.0    1.144  ! Near Maximum !
-03.0   97    49.96   2545    3235   56741   6484    100.0    1.129  ! Near Maximum !
-02.0   98    50.47   2566    3290   58521   6515    100.0    1.114  ! Near Maximum !
-01.0   99    50.99   2587    3345   60356   6546    100.0    1.100  ! Near Maximum !
+00.0  100    51.50   2609    3400   62249   6577    100.0    1.085  ! Near Maximum !
+01.0  101    52.02   2630    3455   64203   6606    100.0    1.071  !DANGEROUS LOAD-DO NOT USE!
+02.0  102    52.53   2651    3510   66220   6636    100.0    1.058  !DANGEROUS LOAD-DO NOT USE!
+03.0  103    53.05   2672    3566   68302   6665    100.0    1.044  !DANGEROUS LOAD-DO NOT USE!
+04.0  104    53.56   2692    3622   70451   6693    100.0    1.031  !DANGEROUS LOAD-DO NOT USE!
+05.0  105    54.08   2713    3678   72671   6721    100.0    1.018  !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    100    51.50   2677    3580   73748   6334    100.0    1.020  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    100    51.50   2503    3130   50832   6912     99.8    1.176

I can't explain the massive jump in velocity, but if there are no pressure signs, I wouldn't be terribly concerned. It would have been more comforting for you if you had five shots and all were within a solid standard deviation. However, the two may be suggesting you are on the right track.

 

[D21ALASKA]

Thank you as always Doc.
That quickload is definitely closer to what I'm seeing vs the book. I'll knock her back and work back up in smaller increments to see what she shows me. Not looking to get sub moa out of this one, more like minute of moose at 100 for this fall. Anything safe with decent speed and accuracy will work for me.
Thanks again.

Sent from my SM-A102U using Tapatalk

 

[DrMike]

I certainly had sub MOA loads with my 350 RM and 225 grain PT. As I said, I ultimately opted for the 200 grain TSX which managed to tag quite a few animals. It did produce some excellent accuracy (0.3 MOA) which gave me a fair degree of confidence.

 

[D21ALASKA]

Dang that's excellent Doc. Hopefully I may see the same with this one once she's squared away.

Sent from my SM-A102U using Tapatalk

 

[D21ALASKA]

Just wanted to let you know she came around nicely Doc. Settled at 50.3 grains and running right at 2490fps avg which is fine with me.

Sent from my SM-G996U using Tapatalk

 

[DrMike]

That'll do! Should work very well on about any game you might wish to tackle.

 

[SJB358]

That's great stuff.

 

[D21ALASKA]

Gentlemen,
I was hoping one of you fine fellows might run another set of numbers for me on my 350 Rem Mag. The 225 Partitions I use for the woods are harder to find than hens teeth these days so I want to save them for that use. Found a good deal on some other projectiles so would like to work up a "plinking" round for the rifle.

350 Remington Mag
200gr Hornady Interlock
2.8" COAL
AA2015 (maybe a couple other powders as well if you have suggestions but this is what I have at the moment)
Fed 215
22" barrel

Thank you as always.

 

[DrMike]

Cartridge          : .350 Rem. Mag.
Bullet             : .358, 200, Hornady SPSP 3510
Useable Case Capaci: 60.603 grain H2O = 3.935 cm³
Cartridge O.A.L. L6: 2.800 inch = 71.12 mm
Barrel Length      : 22.0 inch = 558.8 mm
Powder             : Accurate 2015

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   81    43.52   2293    2335   32679   6073     97.9    1.361
-18.0   83    44.61   2344    2440   34834   6203     98.5    1.324
-16.0   86    45.70   2395    2547   37125   6324     99.0    1.288
-14.0   88    46.78   2445    2655   39560   6435     99.4    1.251
-12.0   90    47.87   2495    2764   42149   6535     99.7    1.215
-10.0   92    48.96   2544    2874   44902   6624     99.9    1.181
-08.0   94    50.05   2593    2985   47830   6702    100.0    1.148
-06.0   96    51.14   2641    3098   50946   6769    100.0    1.116
-04.0   98    52.22   2689    3211   54264   6832    100.0    1.086  ! Near Maximum !
-02.0  100    53.31   2736    3324   57799   6893    100.0    1.056  ! Near Maximum !
+00.0  102    54.40   2783    3439   61568   6952    100.0    1.028  ! Near Maximum !
+02.0  104    55.49   2829    3554   65590   7009    100.0    1.001  !DANGEROUS LOAD-DO NOT USE!
+04.0  106    56.58   2875    3671   69887   7064    100.0    0.975  !DANGEROUS LOAD-DO NOT USE!
+06.0  108    57.66   2921    3788   74481   7116    100.0    0.950  !DANGEROUS LOAD-DO NOT USE!
+08.0  110    58.75   2966    3907   79399   7166    100.0    0.926  !DANGEROUS LOAD-DO NOT USE!
+10.0  112    59.84   3011    4027   84671   7214    100.0    0.902  !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    54.40   2863    3640   73213   6681    100.0    0.963  !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba    102    54.40   2659    3139   50072   7266     99.2    1.118

 

[D21ALASKA]

Thank you Doc. I'll see how she does on these numbers when I get home next week.

 

[KinleyWater]

That is some great shooting. Huge fan of 35 calibers and the 350 RM always seemed to be a winner to me.