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Thread: Reloading: Powder for 300 winmag
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10-08-2020, 16:58 #1
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- Jul 2017
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Reloading: Powder for 300 winmag
Hi all
I've lost trust in Somchem so want to move over to a different brand.
What powder would anyone recommend for the 300 winmag. I'm considering Hodgdon Hybrid 100 due to cost efficiency and I've read good reviews. Now I'm wondering what about Vihtavouri N165. I'm reloading on a budget so don't necessarily want to 'try out' a couple of powders. So I'm hoping to get advice from you guys.
I'm loading Sierra Game King 180gr but would like to try a heavier bullet as well - twist is 1:12 which I know won't be great on a heavier bullet.
Would love to hear what powder you recommend.
Thanks
Jacques
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10-08-2020, 17:52 #2
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- Oct 2015
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Re: Reloading: Powder for 300 winmag
I use VV N560 with great success. Howa BARREL 24" 2996fps 180gr Hornady SST.
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13-11-2020, 19:18 #3
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- Sep 2020
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Re: Reloading: Powder for 300 winmag
Hi Jacques,
So I thought id share some info, and willing to assist with QuickLoad and GRT info if needed;
Versatility;
Generally speaking the 300 Win Mag is probably the most versatile caliber as it can be loaded from anything 110gr - 240gr.
Sectional Density - Penetration Characteristics
Varmint; 0.180
Small Game 0.230
Medium Game - 0.280
Big Game - 0.310
Dangerous Game ~ 0.380
Attachment 32439
Trajectories with different projectile weights: 110gr-240gr
http://www.shooterscalculator.com/ba...php?t=231f2351
I would like to lay out some powder options and leave you to decide what you will be loading;
200gr Hornady ELD-X
Below Loads: All Sami Spec;
Cartridge Overall Length: 3.340" / 84.84mm
MIN = PMAX Minus 25%
MAX = PMAX Minus 15%
Hodgdon:
H1000
MIN:72.5=2701 & MAX:75=2806
H4831
MIN:66.0=2632 & MAX:69=2753
Hybrid 100V
MIN:60.41=2601 & MAX:63.41=2693
H4350
MIN:61.0=2602 & MAX:64.08=2718
H414
MIN:61.1=2651 & MAX:64.00=2764
H380
MIN:57.2=2593 & MAX:60.0=2700
Varget
H4895
MIN:54.96=2572 & MAX:57.73=2672
Vihtavuori:
N160
MIN:65.00=2601 & MAX:68.00=2710
N165
MIN:67.53=2622 & MAX:70.24=2725
N560
MIN:68.0=2718 & MAX:70.75=2832
Somchem:
S365
MIN:61.85=2647 & MAX:64.5=2742
S385
MIN:65.2=2627 & MAX:64.5=2732
IMR:
4350
MIN:60.81=2600 & MAX:63.6=2704
Regarding the 1:12 Twist;
Gyroscopic Stability: 1.5 = Comfortable Stable
Attachment 32438
From the above, I would say;
200gr Hornady ELD-X
VV N560
MIN:68.0=2718 & MAX:70.75=2832 (Note that this is still at Minus ~25% Max Pressure)
If you can go to ~72gr you should be at PMAX Minus ~15% and around 2900fps - Which would equate to the similar stability of the 180gr bullet
If you can provide me with coal and case trim to length then I can give you more comprehensive info on the loads you would like to develop :-)
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