6.5X300WSM

[257 Ackley]

I bought my die set and brass for the rifle being built in this caliber yesterday. The die set is a little spendy, since it is a custom set of dies. The brass is WW 270WSM and sized really easy for me after setting up the die. I broke out the old tube of case lube, since I wasn't sure how hard the resizing would be.

Can one of you fine gentlemen with the QL program give me the data for loads using 130 and 140 grain bullets? I have a pound of Super Performance that will be tried along with some of the other powders that have worked in the 300WSM. I would like any load info anyone has that may have worked with this caliber as well.

 

[SJB358]

I would bet some decent money that most of the powders that work well in the 264WM will work well in the 6.5WSM. I would think slow powders like Retumbo, RL22, 25 and H1000 would be something to look at. Can't wait to see your first loads. I am getting a little antsy to get mine set up also. Always seems like I am starting from scratch since I started hanging around with you all! Scotty

 

[chet]

I think RL17 will be the SHIZZZZZ!!!!!!!

 

[DrMike]

Here's a starting place, Joel.

Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 72.054 grain H2O = 4.678 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4831

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 74 47.20 2567 1902 35290 10772 99.0 1.574
-18.0 76 48.38 2623 1986 37504 10996 99.4 1.535
-16.0 78 49.56 2679 2071 39836 11201 99.7 1.489
-14.0 80 50.74 2734 2157 42294 11386 99.9 1.446
-12.0 82 51.92 2788 2244 44883 11551 100.0 1.405
-10.0 83 53.10 2842 2331 47611 11700 100.0 1.366
-08.0 85 54.28 2895 2419 50483 11846 100.0 1.328
-06.0 87 55.46 2947 2507 53509 11989 100.0 1.292
-04.0 89 56.64 2998 2595 56696 12129 100.0 1.257 ! Near Maximum !
-02.0 91 57.82 3049 2684 60054 12267 100.0 1.224 ! Near Maximum !
+00.0 93 59.00 3100 2773 63594 12403 100.0 1.192 ! Near Maximum !
+02.0 95 60.18 3149 2863 67324 12535 100.0 1.161 !DANGEROUS LOAD-DO NOT USE!
+04.0 96 61.36 3199 2954 71259 12664 100.0 1.131 !DANGEROUS LOAD-DO NOT USE!
+06.0 98 62.54 3248 3045 75410 12790 100.0 1.102 !DANGEROUS LOAD-DO NOT USE!
+08.0 100 63.72 3297 3137 79791 12913 100.0 1.075 !DANGEROUS LOAD-DO NOT USE!
+10.0 102 64.90 3345 3230 84419 13033 100.0 1.048 !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 93 59.00 3186 2931 74170 12065 100.0 1.113 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 93 59.00 2969 2544 52773 12877 99.9 1.298

Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 72.054 grain H2O = 4.678 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Maximum Pressure: 56875 psi, or 392 MPa

or a maximum loading ratio or filling of 110 %

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 !

35 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
--------------------------------- -----------------------------------------------------------------
Vihtavuori N570 100.8 70.6 4.57 3180 96.5 56875 16302 1.238 ! Near Maximum !
Hodgdon H870 107.1 73.4 4.76 3159 98.1 56875 15802 1.243 ! Near Maximum !
Hodgdon Retumbo 104.4 69.7 4.52 3159 100.0 56875 14519 1.229 ! Near Maximum !
Alliant Reloder-50 107.3 77.1 5.00 3158 96.4 56875 16437 1.268 ! Near Maximum !
Ramshot Magnum (Big Boy) 94.8 67.4 4.37 3123 99.6 56875 14559 1.234 ! Near Maximum !
Norma MRP 2 99.7 66.2 4.29 3120 99.5 56875 14745 1.250 ! Near Maximum !
Vihtavuori N560 92.1 62.5 4.05 3119 98.9 56875 14724 1.236 ! Near Maximum !
Alliant Reloder-25 97.5 64.4 4.18 3114 100.0 56875 13705 1.237 ! Near Maximum !
Norma MRP 90.3 62.6 4.05 3113 100.0 56875 14233 1.245 ! Near Maximum !
IMR 7828 96.4 62.2 4.03 3113 99.3 56875 14319 1.225 ! Near Maximum !
IMR 7828 SSC 91.2 62.2 4.03 3113 99.3 56875 14319 1.225 ! Near Maximum !
Accurate MAGPRO 92.4 65.3 4.23 3110 98.0 56875 14869 1.245 ! Near Maximum !
Hodgdon H1000 101.2 66.5 4.31 3105 99.5 56875 14049 1.219 ! Near Maximum !
Alliant Reloder-22 92.3 62.0 4.02 3093 99.8 56875 14103 1.241 ! Near Maximum !
Winchester WXR 94.8 62.3 4.04 3092 99.7 56875 14122 1.242 ! Near Maximum !
Vihtavuori 24N41 103.6 73.3 4.75 3077 91.0 56875 14770 1.225 ! Near Maximum !
Hodgdon 50BMG 109.0 73.5 4.76 3069 87.1 56875 14984 1.235 ! Near Maximum !
Hodgdon US 869 108.9 77.0 4.99 3068 91.1 56875 14823 1.239 ! Near Maximum !
Hodgdon H4831 94.9 61.2 3.97 3042 98.8 56875 13425 1.229 ! Near Maximum !
Hodgdon H4831 SC 91.2 61.2 3.97 3042 98.8 56875 13425 1.229 ! Near Maximum !
Vihtavuori N170 103.9 68.3 4.42 3028 95.1 56875 13924 1.253 ! Near Maximum !
Vihtavuori N165 94.8 62.3 4.04 3007 99.9 56875 12625 1.244 ! Near Maximum !
Vihtavuori N160 95.1 60.5 3.92 3000 99.2 56875 12711 1.233 ! Near Maximum !
Accurate 3100 97.9 61.5 3.99 2999 100.0 56875 12462 1.273 ! Near Maximum !
Hodgdon Hybrid 100V 90.3 56.1 3.63 2976 100.0 56875 11487 1.247 ! Near Maximum !


Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 140, Nosler AccuBond 39457
Useable Case Capaci: 71.388 grain H2O = 4.635 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : IMR 4831

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 73 46.00 2484 1919 35504 10623 99.4 1.620
-18.0 75 47.15 2538 2002 37695 10830 99.7 1.580
-16.0 77 48.30 2590 2086 39999 11018 99.9 1.534
-14.0 78 49.45 2642 2170 42424 11186 100.0 1.490
-12.0 80 50.60 2694 2255 44974 11341 100.0 1.449
-10.0 82 51.75 2744 2341 47656 11494 100.0 1.409
-08.0 84 52.90 2794 2427 50476 11644 100.0 1.370
-06.0 86 54.05 2843 2513 53442 11791 100.0 1.334
-04.0 88 55.20 2892 2600 56562 11937 100.0 1.299 ! Near Maximum !
-02.0 89 56.35 2940 2687 59843 12079 100.0 1.265 ! Near Maximum !
+00.0 91 57.50 2988 2775 63296 12219 100.0 1.232 ! Near Maximum !
+02.0 93 58.65 3035 2863 66929 12356 100.0 1.201 !DANGEROUS LOAD-DO NOT USE!
+04.0 95 59.80 3082 2953 70754 12490 100.0 1.171 !DANGEROUS LOAD-DO NOT USE!
+06.0 97 60.95 3128 3042 74782 12622 100.0 1.142 !DANGEROUS LOAD-DO NOT USE!
+08.0 99 62.10 3175 3133 79026 12750 100.0 1.114 !DANGEROUS LOAD-DO NOT USE!
+10.0 100 63.25 3220 3224 83500 12875 100.0 1.087 !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 91 57.50 3067 2925 73613 11899 100.0 1.152 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 91 57.50 2868 2558 52695 12684 100.0 1.340


Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 140, Nosler AccuBond 39457
Useable Case Capaci: 71.388 grain H2O = 4.635 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm

Predicted Data for Indicated Charges of the Following Powders.

Matching Maximum Pressure: 56875 psi, or 392 MPa

or a maximum loading ratio or filling of 110 %

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 !

40 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
--------------------------------- -----------------------------------------------------------------
Vihtavuori N570 99.2 68.9 4.46 3082 97.3 56875 16247 1.277 ! Near Maximum !
Alliant Reloder-50 105.7 75.2 4.87 3063 97.1 56875 16415 1.308 ! Near Maximum !
Hodgdon H870 105.4 71.6 4.64 3061 98.7 56875 15723 1.283 ! Near Maximum !
Hodgdon Retumbo 102.8 68.0 4.41 3056 100.0 56875 14331 1.268 ! Near Maximum !
Ramshot Magnum (Big Boy) 93.3 65.8 4.26 3022 99.8 56875 14405 1.275 ! Near Maximum !
Norma MRP 2 98.1 64.6 4.19 3019 99.8 56875 14583 1.290 ! Near Maximum !
Vihtavuori N560 90.6 60.9 3.95 3018 99.4 56875 14584 1.275 ! Near Maximum !
Accurate MAGPRO 91.0 63.7 4.13 3012 98.6 56875 14769 1.284 ! Near Maximum !
IMR 7828 94.9 60.7 3.93 3012 99.6 56875 14166 1.264 ! Near Maximum !
Alliant Reloder-25 96.0 62.8 4.07 3007 100.0 56875 13510 1.277 ! Near Maximum !
Hodgdon H1000 99.8 64.9 4.21 3006 99.8 56875 13911 1.258 ! Near Maximum !
ADI AR 2213 90.9 60.4 3.92 3002 99.6 56875 14050 1.260 ! Near Maximum !
Vihtavuori 20N29 110.0 77.9 5.05 2993 94.7 56389 15178 1.291 ! Near Maximum !
Alliant Reloder-22 90.9 60.5 3.92 2991 99.9 56875 13925 1.281 ! Near Maximum !
Winchester WXR 93.3 60.8 3.94 2990 99.9 56875 13950 1.281 ! Near Maximum !
Vihtavuori 24N41 102.3 71.7 4.65 2989 92.2 56875 14845 1.263 ! Near Maximum !
Hodgdon 50BMG 107.6 71.9 4.66 2982 88.3 56875 15095 1.273 ! Near Maximum !
Hodgdon US 869 107.4 75.3 4.88 2979 92.2 56875 14900 1.278 ! Near Maximum !
Hodgdon H4831 93.5 59.8 3.87 2944 99.2 56875 13316 1.268 ! Near Maximum !
Vihtavuori N170 102.5 66.7 4.32 2936 96.0 56875 13915 1.291 ! Near Maximum !
Vihtavuori N165 93.4 60.8 3.94 2908 100.0 56875 12463 1.283 ! Near Maximum !
Vihtavuori N160 93.7 59.1 3.83 2903 99.5 56875 12594 1.271 ! Near Maximum !
Accurate 3100 96.5 60.0 3.89 2898 100.0 56875 12281 1.313 ! Near Maximum !

Of course, the data can get more precise as you focus on a powder and bullet.

This should be a great cartridge.

 

[SJB358]

Man, that looks pretty good. I would think anything over 3K with the 140 should be awesome. Plus, that 140gr AB is a pretty slippery little guy, should be awesome at extended ranges. Scotty

 

[Mountain Goat]

I know the guys shooting the 6.5 SAUM in target competition are really fond of Retumbo. The WSM case has a bit more capacity but should behave in the same fashion, screaming.

 

[Songdog]

Seems like a lot of work for .270 Winny velocities.........

 

[SJB358]

Looks like it sits pretty good between the 270WSM and 270 Win with better bullets. Plus, it just looks cool and heck, that has to count for something. Scotty

 

[Songdog]

Looks like it sits pretty good between the 270WSM and 270 Win with better bullets. Plus, it just looks cool and heck, that has to count for something. Scotty

It counts for about a grand in gunsmith fees.... and another couple hundy in dies.

 

[SJB358]

I will let Joel tell ya what he has tied up in the rifle but I can't see it being more than 1200 for the entire rifle including his donor. Dies are 140.00, but heck, it will be a neat semi custom with some good legs..

 

[DrMike]

In fairness to the cartridge, I didn't run optimal powders. I only wanted to let Joel know what was in play. The cartridge is capable of quite a bit more than projected in the first blush.

Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 140, Nosler AccuBond 39457
Useable Case Capaci: 71.388 grain H2O = 4.635 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Accurate MAGPRO

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 75 52.80 2482 1915 32993 12021 90.4 1.652
-18.0 77 54.12 2546 2016 35275 12416 91.7 1.609
-16.0 79 55.44 2611 2119 37703 12798 93.0 1.566
-14.0 81 56.76 2675 2225 40289 13165 94.1 1.515
-12.0 83 58.08 2740 2334 43045 13515 95.2 1.467
-10.0 85 59.40 2804 2445 45982 13846 96.2 1.421
-08.0 87 60.72 2869 2559 49112 14157 97.0 1.377
-06.0 89 62.04 2933 2674 52448 14445 97.8 1.334
-04.0 91 63.36 2997 2793 56005 14711 98.4 1.293 ! Near Maximum !
-02.0 92 64.68 3061 2913 59800 14951 99.0 1.254 ! Near Maximum !
+00.0 94 66.00 3125 3035 63851 15164 99.4 1.216 ! Near Maximum !
+02.0 96 67.32 3188 3159 68178 15349 99.7 1.179 !DANGEROUS LOAD-DO NOT USE!
+04.0 98 68.64 3250 3284 72804 15505 99.9 1.144 !DANGEROUS LOAD-DO NOT USE!
+06.0 100 69.96 3313 3411 77753 15630 100.0 1.110 !DANGEROUS LOAD-DO NOT USE!
+08.0 102 71.28 3374 3540 83054 15731 100.0 1.077 !DANGEROUS LOAD-DO NOT USE!
+10.0 104 72.60 3436 3670 88738 15827 100.0 1.045 !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 94 66.00 3267 3317 76716 14667 100.0 1.120 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 94 66.00 2924 2657 51243 14892 94.4 1.343

Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 140, Nosler AccuBond 39457
Useable Case Capaci: 71.388 grain H2O = 4.635 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Vihtavuori N570

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 82 56.80 2466 1890 30676 12683 85.7 1.686
-18.0 84 58.22 2537 2000 32942 13175 87.4 1.639
-16.0 86 59.64 2608 2114 35389 13654 89.1 1.595
-14.0 88 61.06 2680 2233 38032 14117 90.7 1.547
-12.0 90 62.48 2753 2355 40891 14560 92.1 1.494
-10.0 92 63.90 2826 2482 43984 14983 93.5 1.443
-08.0 94 65.32 2899 2612 47340 15381 94.7 1.393
-06.0 96 66.74 2972 2746 50977 15751 95.9 1.345
-04.0 98 68.16 3046 2884 54884 16092 96.9 1.299
-02.0 100 69.58 3120 3025 59085 16400 97.7 1.255 ! Near Maximum !
+00.0 102 71.00 3193 3170 63622 16673 98.5 1.213 ! Near Maximum !
+02.0 104 72.42 3267 3318 68527 16908 99.1 1.172 !DANGEROUS LOAD-DO NOT USE!
+04.0 106 73.84 3340 3468 73836 17104 99.5 1.132 !DANGEROUS LOAD-DO NOT USE!
+06.0 108 75.26 3413 3622 79591 17257 99.8 1.094 !DANGEROUS LOAD-DO NOT USE!
+08.0 111 76.68 3486 3778 85839 17367 100.0 1.057 !DANGEROUS LOAD-DO NOT USE!
+10.0 113 78.10 3558 3936 92636 17434 100.0 1.021 !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 71.00 3373 3538 79005 16211 100.0 1.105 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 102 71.00 2945 2696 49293 16000 91.3 1.355

 

[SJB358]

Now your talking Mike! 3200 with the 140's! I will have to look over the data you sent me for the 264WM, but I can't see me doing any better than that! I would be ecstatic to get those kinda speeds.

Looking at your QL data you sent me, I can't see beating the 6.5WSM by any real margin. Makes it seem all the better to me. I really wanted to do the 6.5, but when Joel jumped on it, I decided to do something else. Heck, hopefully we can all get together to see how all these rifles fare on on the open range, or maybe in Northern BC! Scotty

 

[JD338]

Joel,

Congratulations on the 6.5 WSM
Looking forward to seeing some pictures and range reports.
The 140 gr AB at 3200 is smokin'.

JD338

 

[DrMike]

With the 130 AB, the velocity can be fairly impressive. I do believe this cartridge would reach out and touch whatever you stalked.

Cartridge : 6.5 mm Rock (WSM)
Bullet : .264, 130, Nosler AccuBond 56902
Useable Case Capaci: 72.054 grain H2O = 4.678 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Vihtavuori N570

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 83 58.24 2531 1849 30379 12576 83.9 1.639
-18.0 85 59.70 2605 1959 32645 13084 85.7 1.595
-16.0 87 61.15 2680 2073 35096 13580 87.5 1.552
-14.0 89 62.61 2755 2191 37749 14061 89.2 1.503
-12.0 91 64.06 2832 2314 40620 14524 90.8 1.452
-10.0 94 65.52 2908 2442 43735 14966 92.3 1.401
-08.0 96 66.98 2986 2573 47116 15384 93.6 1.352
-06.0 98 68.43 3063 2709 50790 15775 94.9 1.306
-04.0 100 69.89 3141 2849 54789 16136 96.0 1.260
-02.0 102 71.34 3219 2992 59116 16464 97.0 1.216 ! Near Maximum !
+00.0 104 72.80 3298 3139 63783 16757 97.9 1.174 ! Near Maximum !
+02.0 106 74.26 3376 3290 68844 17011 98.6 1.133 !DANGEROUS LOAD-DO NOT USE!
+04.0 108 75.71 3454 3444 74340 17224 99.2 1.094 !DANGEROUS LOAD-DO NOT USE!
+06.0 110 77.17 3532 3601 80317 17394 99.6 1.056 !DANGEROUS LOAD-DO NOT USE!
+08.0 112 78.62 3609 3761 86830 17518 99.9 1.020 !DANGEROUS LOAD-DO NOT USE!
+10.0 114 80.08 3687 3924 93941 17593 100.0 0.984 !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 104 72.80 3493 3521 79513 16404 100.0 1.068 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 104 72.80 3033 2656 49412 15937 90.0 1.313

 

[Powerstroke]

Joel - Congrats on an impressive 6.5 !

Don't they have regulations about shooting stuff from one county into the other :twisted: ?

Can't wait to see the finished goods.......

 

[257 Ackley]

Mike -
Thanks for the QL info. I am going to pick up some R25 and Retumbo to try along with the other powders already stocked.

I have always liked calibers that are a little outside of normal, that still have practical applications. This rifle will not have a big price tag, with the way the build is being done. I was given the name of a gunsmith by Nodak7mm (Rod) that builds Palma class rifles and is very reasonable for his services. This includes all the normal work done on a custom job to the lugs and bolt along with a 26" Brux (cut rifling) stainless barrel. Some of the work will be done by me to help defray costs.

Accuracy is still more important than velocity, but everything about this caliber tells me i will get both. Should have it back by the middle of May to start load development. Until than, I get to shoot belding squirrels and p-dogs :grin: !

 

[257 Ackley]

Scotty -
I like the Northern BC idea as well!! I think Mike needs to start asking some perishoners if they will take in a few of us for a week or so :mrgreen:

 

[tpbscha]

I built a 25X300WSM and love it. The only issue I have run into is the neck thickness of both Rem and Win 270WSM brass. After the sizing operation I was getting .017-.018 necks. I normally turn them back to .014 to help straighten things out.

 

[SJB358]

Mike -
Thanks for the QL info. I am going to pick up some R25 and Retumbo to try along with the other powders already stocked.

I have always liked calibers that are a little outside of normal, that still have practical applications. This rifle will not have a big price tag, with the way the build is being done. I was given the name of a gunsmith by Nodak7mm (Rod) that builds Palma class rifles and is very reasonable for his services. This includes all the normal work done on a custom job to the lugs and bolt along with a 26" Brux (cut rifling) stainless barrel. Some of the work will be done by me to help defray costs.

Accuracy is still more important than velocity, but everything about this caliber tells me i will get both. Should have it back by the middle of May to start load development. Until than, I get to shoot belding squirrels and p-dogs :grin: !

I am thinking I will probably put pillars in the 264WM also, along with some Acra-Gel. I can't imagine I won't shoot it first, but I think the bedding job will assist down the road and in reality, it won't cost me more than 30.00 and a little bit of my time. Scotty

 

[257 Ackley]

I built a 25X300WSM and love it. The only issue I have run into is the neck thickness of both Rem and Win 270WSM brass. After the sizing operation I was getting .017-.018 necks. I normally turn them back to .014 to help straighten things out.

I take it you are turning the outside of the case? What neck turner are you using? Part of the reason I bought 270WSM brass instead of using the 300WSM brass already in-stock was to reduce the chance of case walls getting thicker during the resizing process. Did you have a tight chamber reamed that doesn't allow for much wiggle room? What are you using for case length before you trim? The gunsmith is doing a cast of my chamber, so I should have all the dimensions when I get it back.