new caliber for me to reload-.300 WSM

[onlybrowning]

I have loaded extensively for my .325 WSM, but I just acquired a .300 WSM. I will be using 165 grain Nosler Accubonds. I also have H4350, H4831, and H4895. Here is my real question: My .325 WSM likes hot loads with a regular CCI 200 rifle primer. It went from shooting ok to great just by using this particular large rifle primer. All magnum primers and even other large rifle primers yielded less than stellar results.

Should I start with large rifle primers or mag's? The reloading manuals all suggest mags, but I never had them give good results with the .325. What do you guys think?

 

[JD338]

I have always used mag primers in magnums, specifically the Federal GM215M primer. That would be my suggestion. If you can't find an acceptable load, change primers and start over.

Do a search, there is a plethora of load data here for the 300 WSM.

JD338

 

[FOTIS]

Like Jim said...fed 215 Match


Cartridge : .300 WSM (CIP)
Bullet : .308, 165, Nosler AccuBond 55602
Cartridge O.A.L. L6: 2.860 inch or 72.64 mm
Barrel Length : 24.0 inch or 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Maximum Pressure: 63000 psi, or 434 MPa

or a maximum loading ratio or filling of 105 %

These calculations refer to your specified settings in QuickLOAD 'Cartridge Dimensions' window.
C A U T I O N : any load listed can result in a powder charge that falls below minimum suggested
loads or exceeds maximum suggested loads as presented in current handloading manuals. Understand
that all of the listed powders can be unsuitable for the given combination of cartridge, bullet
and gun. Actual load order can vary, depending upon lot-to-lot powder and component variations.
USE ONLY FOR COMPARISON !

114 loads produced a Loading Ratio below user-defined minimum of 90%. These powders have been skipped.

Powder type Filling/Loading Ratio Charge Charge Vel. Prop.Burnt P max P muzz B_Time
% Grains Gramm fps % psi psi ms
--------------------------------- -----------------------------------------------------------------
Hodgdon H4350 101.3 66.5 4.31 3131 99.8 63000 10915 1.098 ! Near Maximum !
Somchem S365 103.7 68.1 4.41 3129 100.0 63000 10302 1.111 ! Near Maximum !
Ramshot Hunter 98.4 69.3 4.49 3128 99.7 63000 11064 1.106 ! Near Maximum !
Winchester 760 95.9 67.0 4.34 3124 99.3 63000 11078 1.108 ! Near Maximum !
Norma MRP 105.0 72.4 4.69 3123 98.7 57149 11974 1.144 ! Near Maximum !
ADI AR 2209 105.0 69.0 4.47 3115 98.0 62251 11215 1.099 ! Near Maximum !
Norma URP 101.1 66.1 4.28 3109 100.0 63000 10622 1.112 ! Near Maximum !
Bofors RP19 ~approximation 101.1 66.1 4.28 3109 100.0 63000 10619 1.112 ! Near Maximum !
Vihtavuori N550 98.2 66.3 4.30 3109 100.0 63000 10756 1.116 ! Near Maximum !
Accurate 4350 104.9 66.3 4.30 3106 100.0 63000 10592 1.128 ! Near Maximum !
Bofors RP4 ~approximation 103.8 68.6 4.44 3099 98.0 63000 11013 1.102 ! Near Maximum !
Raufoss RA4 103.8 68.6 4.44 3099 98.0 63000 11013 1.102 ! Near Maximum !
Norma 204 100.5 68.6 4.44 3099 98.0 63000 11013 1.102 ! Near Maximum !
Alliant Reloder-19 105.0 69.4 4.50 3094 97.9 60830 11238 1.117 ! Near Maximum !
Hodgdon H414 92.2 64.9 4.20 3094 99.6 63000 10768 1.117 ! Near Maximum !
Ramshot BigGame 97.4 64.4 4.17 3088 100.0 63000 10233 1.112 ! Near Maximum !
SNPE Vectan SP 11 94.5 64.5 4.18 3087 100.0 63000 10219 1.112 ! Near Maximum !
IMR 7828 SSC 105.0 71.3 4.62 3083 96.0 57509 11628 1.134 ! Near Maximum !
IMR 4895 93.2 59.6 3.86 3075 100.0 63000 9648 1.096 ! Near Maximum !
Bofors RP11 ~approximation 92.0 60.8 3.94 3070 100.0 63000 10108 1.118 ! Near Maximum !
Alliant Reloder-15 92.0 60.8 3.94 3070 100.0 63000 10108 1.118 ! Near Maximum !
Raufoss RA11 92.0 60.8 3.94 3070 100.0 63000 10108 1.118 ! Near Maximum !
Norma 203B 92.4 61.1 3.96 3066 100.0 63000 10024 1.120 ! Near Maximum !
Bofors RP14 ~approximation 105.0 69.4 4.50 3065 97.7 59398 11089 1.130 ! Near Maximum !
Rottweil R904 104.5 68.1 4.41 3064 97.1 63000 10695 1.106 ! Near Maximum !
Hodgdon H380 93.3 63.0 4.08 3062 100.0 63000 10249 1.122 ! Near Maximum !
IMR 4350 105.0 66.4 4.31 3062 97.2 61621 10823 1.117 ! Near Maximum !
Norma 203 old 93.7 62.6 4.05 3054 100.0 63000 9862 1.132 ! Near Maximum !
IMR 4320 93.9 61.1 3.96 3051 100.0 63000 9743 1.105 ! Near Maximum !
Somchem S385 105.0 70.1 4.54 3050 98.6 60353 10762 1.141 ! Near Maximum !
Vihtavuori N560 105.0 70.9 4.59 3050 94.8 54300 11836 1.170
Rottweil R903 98.6 62.6 4.06 3049 100.0 63000 9781 1.132 ! Near Maximum !
Somchem S355 95.9 62.0 4.02 3044 100.0 63000 9793 1.126 ! Near Maximum !
ADI AR 2213 105.0 70.1 4.54 3039 95.4 55984 11404 1.148 ! Near Maximum !
Rottweil R907 98.1 63.6 4.12 3039 98.9 63000 10306 1.118 ! Near Maximum !
IMR 4007 SSC 95.0 63.7 4.13 3038 98.9 63000 10299 1.118 ! Near Maximum !
ADI AR 2208 94.5 60.6 3.93 3033 100.0 63000 9759 1.109 ! Near Maximum !
Hodgdon VARGET 94.8 60.6 3.93 3033 100.0 63000 9759 1.109 ! Near Maximum !
Raufoss RA15 105.0 70.1 4.54 3027 96.8 53699 11494 1.180
Alliant Reloder-22 105.0 70.1 4.54 3027 96.8 53699 11494 1.180
Bofors RP5/NP ~approximation 105.0 70.1 4.54 3027 96.8 53699 11494 1.180
IMR 4064 95.3 59.5 3.86 3025 100.0 63000 9570 1.114 ! Near Maximum !
Accurate MAGPRO 105.0 73.8 4.78 3020 92.8 53286 11763 1.185
IMR 3031 91.3 56.4 3.66 3019 100.0 63000 9078 1.125 ! Near Maximum !
Hodgdon H4895 94.5 60.4 3.91 3015 100.0 63000 9229 1.113 ! Near Maximum !
Accurate 4064 97.6 60.3 3.91 3010 100.0 63000 9252 1.153 ! Near Maximum !
Rottweil R902 92.0 58.6 3.80 3000 100.0 63000 9261 1.131 ! Near Maximum !
Vihtavuori N150 101.0 63.0 4.08 2999 100.0 63000 9209 1.126 ! Near Maximum !
Vihtavuori N540 91.8 61.3 3.97 2997 100.0 63000 9222 1.126 ! Near Maximum !
Hodgdon H4831 SC 105.0 70.1 4.54 2995 94.4 56896 10795 1.149 ! Near Maximum !
Vihtavuori N140 97.4 61.8 4.01 2994 100.0 63000 9156 1.120 ! Near Maximum !
Accurate 2700 96.1 65.5 4.25 2986 98.7 63000 9707 1.123 ! Near Maximum !
Accurate 2495 90.8 56.7 3.68 2982 100.0 63000 8908 1.159 ! Near Maximum !
IMR 4831 105.0 66.4 4.31 2978 99.2 54605 10510 1.191
Vihtavuori N135 97.3 58.3 3.78 2956 100.0 63000 8517 1.136 ! Near Maximum !
Rottweil R905 105.0 68.9 4.46 2950 94.1 51835 10939 1.202
Winchester WXR 105.0 68.6 4.45 2938 95.5 49057 11203 1.231
SNPE Vectan SP 12 105.0 74.1 4.80 2934 94.1 48917 11367 1.222
PB Clermont PCL 517 105.0 74.1 4.80 2928 93.9 48640 11357 1.225
Ramshot Magnum (Big Boy) 105.0 73.9 4.79 2924 93.8 48372 11349 1.228
Vihtavuori N133 91.5 55.3 3.59 2901 100.0 63000 8019 1.128 ! Near Maximum !
IMR 7828 105.0 67.4 4.37 2892 93.0 47371 10972 1.240
ADI AP 2214 105.0 72.0 4.67 2882 93.2 48606 10814 1.226
Alliant Reloder-25 105.0 69.0 4.47 2873 97.8 44187 11087 1.282
Vihtavuori N165 105.0 68.6 4.45 2873 96.5 50422 10057 1.225
Hodgdon H4831 105.0 67.4 4.37 2866 92.3 49631 10340 1.223
Vihtavuori N160 105.0 66.5 4.31 2861 94.5 51572 9913 1.213
Norma MRP 2 105.0 69.4 4.50 2764 91.0 39760 10903 1.356
Accurate 3100 105.0 65.6 4.25 2763 96.9 43845 9890 1.335
Vihtavuori N570 105.0 73.2 4.74 2721 82.3 38582 11103 1.372

 

[onlybrowning]

That is the primer I first used in my .325WSM. I guess I will start there, but I know where to go if I don't get good results right away!

 

[DrMike]

Because of the shorter powder column, it is quite possible to get by with LR primers. I use LR primers in each of my WSMs. The only time that LRM primers are mandated are when using ball powders and in extremely cold weather. However, in my 325 WSM and in my 300 WSM, preferred hunting loads (even in temps down to -40 C) have never failed me with LR primers. There certainly is no harm in using LRM primers, just be certain to work up the load as the pressure will be effected.

 

[Guy Miner]

Only Browning - now you've got me curious! I've only used the Federal 215's, but I'll need to try the CCI's now - just to see if there's a difference for me and my .300 WSM!

Pop - interesting to see you load info - right at the top of the list are two powders I really like with the WSM; H4350 and Ramshot Hunter. Good stuff both of them! :grin:

I wasn't real keen on the WSM's when they were introduced, but fell into a good deal on a nice one and have really learned to appreciate the cartridge.

 

[DrMike]

Guy,

I've had good success using CCI primers in my WSMs. Because Federals are sometimes difficult to find, the CCIs can make a good substitute. I'm using CCI200s in my hunting load on the 300 WSM with excellent results. However, I am using CT Failsafes, and when they are gone I'll be looking at another load. I'm not too worried, however, as I have quite a few loads that give me sub-MOA. Interestingly enough, several use CCI200s, though LRM primers figure in on other loads.

 

[Thebear_78]

My 300 WSM liked 180 partitions at 2925fps with 63.5gr of H4350

 

[Big Squeeze]

Don`t forget to throw in some RL 17 into the mix. When you can get some that is!!!

 

[Guy Miner]

The .300 WSM is an interesting bird.

I always liked the .30-06, and the .300 WSM is all of that, and more. Top loads will get you within a whisker of good .300 Win mag loads, or right at that level, but it's easy to beat even stout '06 loads.

Interesting cartridge. I find it easy to load, easy to shoot. Have yet to take any game with it - but I don't know why it would perform much different than any other decent .30 cal I've ever shot.

Regards, Guy

 

[DrMike]

As is true of all the WSMs, the 300 is easy to load for. It is not particularly finicky about powders and handles bullets up to 200 grains readily, delivering them at velocities that mirror those from a 300 WM. I've taken mule deer at the longest yardage of any game I've taken and moose. My favourite loads used either 180 grain Fail Safe bullets (of which I am finally in short supply) or 175 grain Partitions. However, I've developed loads that are far better than could be expected with 165 grain Accubonds, 180 grain Interbonds, 180 grain Mag Tips, 180 grain A Frames and 200 grain Game Kings. What's not to like?

 

[big rifle man]

I'm heading out to the range on Monday to try out some RL17 that I managed to get from Grafs. I'll let everyone know how I make out. I'll be shooting m y .300WSM Kimber montana and plan to use a chrony.

 

[FOTIS]

Don`t forget to throw in some RL 17 into the mix. When you can get some that is!!!

LOAD DATA RECIPES FOR RELODER® 17

Caliber Bullet Case Primer COAL Chg Wgt Velocity
223 WSM 55 gr SP Fed Fed 210 2.210 46.6 3865
243 Win 80 gr SP Fed Fed 210 2.615 44.0 3362
243 Win 85 gr HP Fed Fed 210 2.625 43.7 3316
243 Win 100 gr BTSP Fed Fed 210 2.625 40.8 3044
243 WSM 70 gr HP Fed Fed 210 2.185 49.0C 3745
243 WSM 80 gr SP Fed Fed 210 2.255 44.5 3512
243 WSM 85 gr BTSP Fed Fed 210 2.255 45.5 3452
243 WSM 100 gr BTSP Fed Fed 210 2.290 41.0 3128

6mm Rem 70 gr HP Fed Fed 210 2.775 48.5C 3682
6mm Rem 80 gr SP Fed Fed 210 2.775 46.7 3500
6mm Rem 85 gr BTSP Fed Fed 210 2.775 46.0 3441
6mm Rem 100 gr BTSP
Fed Fed 210 2.800 44.0 3163

25-06 87 gr SP Fed Fed 210 3.115 54.5 3547
25-06 120 gr BTSP Fed Fed 210 3.200 48.5 3012

6.5x55(mil) 90 gr HP Fed Fed 210 2.850 48.53223
6.5x55(mil) 120 gr SP Fed Fed 210 3.000 41.52741

260 Rem 120 gr SP Fed Fed 210 2.720 44.0 2912
260 Rem 140 gr SP Fed Fed 210 2.745 41.0 2645

270 WSM 100 gr HP Fed Fed 215 2.730 67.5 3668
270 WSM 130 gr BTSP Fed Fed 215 2.700 62.0 3258
270 WSM 150 gr BTSP Fed Fed 215 2.700 60.0 3041

270 Win 100 gr HP Fed Fed 210 3.100 59.0 3554
270 Win 130 gr BTSP Fed Fed 210 3.200 54.0 3136
270 Win 150 gr BTSP Fed Fed 210 3.200 51.5 2921

280 Rem 110 gr HP Fed Fed 210 3.200 59.5 3397
280 Rem 130 gr BTSP Fed Fed 210 3.205 56.0 3167
280 Rem 145 gr BTSP Fed Fed 210 3.180 53.0 2968
280 Rem 160 gr BTSP Fed Fed 210 3.200 51.5 2825
280 Rem 175 gr GS Fed Fed 210 3.265 50.5 2674

7 WSM 110 gr HP Win Fed 215 2.770 69.5 3588
7 WSM 130 gr BTSP Win Fed 215 2.775 66.5 3356
7 WSM 145 gr BTSP Win Fed 215 2.760 63.5 3166
7 WSM 160 gr BTSP Win Fed 215 2.820 60.0 2964

7 mm-08 110 gr HP Fed Fed 210 2.760 50.5C 3169
7 mm-08 115 gr HP Fed Fed 210 2.655 49.5C 3107
7 mm-08 130 gr BTSP Fed Fed 210 2.730 48.5C 3007
7 mm-08 145 gr BTSP Fed Fed 210 2.730 46.0 2819
7 mm-08 160 gr BTSP Fed Fed 210 2.800 44.0 2669
7 mm-08 175 gr GS Fed Fed 210 2.745 44.0 2574

7 mm RM 110 gr HP Fed Fed 215 3.200 68.0 3535
7mm RM 130 gr BTSP Fed Fed 215 3.200 63.5 3255
7 mm RM 145 gr BTSP Fed Fed 215 3.210 61.8 3113
7mm RM 160 gr BTSP Fed Fed 215 3.210 59.0 2931
7 mm RM 175 gr GS Fed Fed 215 3.215 67.0 2774
7mm RM 150 gr BTSP Fed Fed 210 2.700 50.0C 2763

308 Win 165 gr BTSP Fed Fed 210 2.800 50.0C 2739
308 Win 180 gr BTSP Fed Fed 210 2.800 48.7C 2641

30-06 150 gr BTSP Fed Fed 210 3.250 58.0 3006
30-06 165 gr BTSP Fed Fed 210 3.250 56.5 2874
30-06 168 gr BTHP Fed Fed 210 3.295 56.0 2850
30-06 180 gr BTSP Fed Fed 210 3.250 54.5 2762
30-06 200 gr SP Fed Fed 210 3.250 51.0 2552
300 WSM 150 gr BTSP Fed Fed 215 2.810 69.3 3343

300 WSM 165 gr BTSP Fed Fed 215 2.810 68.0 3217
300 WSM 180 gr BTSP Fed Fed 215 2.800 66.0 3082

300 WM 150 gr BTSP Fed Fed 215 3.330 74.0 3333
300 WM 165 gr BTSP Fed Fed 215 3.340 72.5 3202
300 WM 180 gr BTSP Fed Fed 215 3.340 70.5 3074

325 WSM 150 gr S-SP Win Fed 215 2.850 71.5 3348
325 WSM 170 gr S-SP Win Fed 215 2.790 65.0 3131
325 WSM 200 gr SP Win Fed 215 2.840 65.0 2897
338 WM 200 gr SP Fed Fed 215 3.300 71.0 3002

338 WM 225 gr BTSP Fed Fed 215 3.340 67.5 2831
338 WM 250 gr GS Fed Fed 215 3.300 66.0 2664

 

[big rifle man]

Thanks for the info pop. I'll use it on Monday

 

[FOTIS]

Cool give us a follow up.

 

[Alaska]

Fed 215GM worked well for me.

As for powder Reloader 19 and IMR 4831 was excellent. The new Reloader 17 should be a winner.

I duplicated a load from Winchester........W760 @ 68.0 and WLRM and WW cases with the 180gr Fail Safe.......excellent load for big animals.