220 gr partitions, 300 wsm, rl-17

[Fortydelta]

I'm trying to find some data for this bullet powder combo. There is zero data on RL-17 from nosler, and Alliant's data only goes up to 180gr. I emailed them and they said it's an untested combo. Surely it's possible. Has anyone tried it?

 

[DrMike]

Welcome aboard; we're glad to see new people joining us.

Never tried the 220 grain PTs in my rifle. I have shot a variety of 200 grain bullets, and they work quite well. Here's a QL projection that may give you some insight.

Cartridge : .300 WSM (CIP)
Bullet : .308, 220, Nosler PART SPSemi 16332
Useable Case Capaci: 69.999 grain H2O = 4.545 cm³
Cartridge O.A.L. L6: 2.860 inch = 72.64 mm
Barrel Length : 24.0 inch = 609.6 mm
Powder : Alliant Reloder-17

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 72 48.88 2260 2496 33651 8887 99.7 1.657
-18.0 74 50.10 2310 2607 35857 9045 99.9 1.616
-16.0 76 51.32 2359 2718 38204 9183 100.0 1.573
-14.0 78 52.55 2407 2831 40699 9311 100.0 1.527
-12.0 79 53.77 2455 2944 43353 9436 100.0 1.483
-10.0 81 54.99 2502 3058 46178 9559 100.0 1.441
-08.0 83 56.21 2549 3173 49186 9680 100.0 1.401
-06.0 85 57.43 2595 3289 52371 9799 100.0 1.363
-04.0 87 58.66 2640 3406 55729 9915 100.0 1.325 ! Near Maximum !
-02.0 88 59.88 2686 3524 59286 10029 100.0 1.290 ! Near Maximum !
+00.0 90 61.10 2731 3642 63057 10141 100.0 1.256 ! Near Maximum !
+02.0 92 62.32 2775 3762 67057 10249 100.0 1.223 !DANGEROUS LOAD-DO NOT USE!
+04.0 94 63.54 2820 3883 71303 10355 100.0 1.191 !DANGEROUS LOAD-DO NOT USE!
+06.0 96 64.77 2864 4006 75812 10458 100.0 1.161 !DANGEROUS LOAD-DO NOT USE!
+08.0 97 65.99 2907 4129 80603 10557 100.0 1.131 !DANGEROUS LOAD-DO NOT USE!
+10.0 99 67.21 2951 4254 85699 10654 100.0 1.103 !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 90 61.10 2805 3844 75545 9831 100.0 1.174 !DANGEROUS LOAD-DO NOT USE!
Data for burning rate decreased by 10% relative to nominal value:
-Ba 90 61.10 2618 3347 50737 10595 100.0 1.368


Cartridge : .300 WSM (CIP)
Bullet : .308, 220, Nosler PART SPSemi 16332
Useable Case Capaci: 69.999 grain H2O = 4.545 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: 63000 psi, or 434 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 !

28 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 110.0 74.8 4.85 2806 96.2 58343 13132 1.275 ! Near Maximum !
Alliant Reloder-25 108.9 69.9 4.53 2803 100.0 63000 11111 1.239 ! Near Maximum !
Norma MRP 100.8 67.8 4.40 2803 100.0 63000 11553 1.249 ! Near Maximum !
Vihtavuori N560 102.5 67.6 4.38 2803 99.3 63000 11989 1.244 ! Near Maximum !
Accurate MAGPRO 102.9 70.6 4.57 2798 98.4 63000 12124 1.250 ! Near Maximum !
IMR 7828 107.1 67.1 4.35 2790 99.5 63000 11569 1.235 ! Near Maximum !
IMR 7828 SSC 101.3 67.1 4.35 2790 99.5 63000 11569 1.235 ! Near Maximum !
Alliant Reloder-33 110.0 78.0 5.05 2782 96.3 57581 12968 1.283 ! Near Maximum !
Norma MRP 2 110.0 71.0 4.60 2781 99.6 60449 11939 1.272 ! Near Maximum !
Alliant Reloder-22 102.8 67.1 4.35 2777 99.9 63000 11453 1.251 ! Near Maximum !
Winchester WXR 105.6 67.4 4.37 2777 99.9 63000 11478 1.252 ! Near Maximum !
Ramshot Magnum 102.7 72.2 4.68 2763 100.0 63000 10920 1.243 ! Near Maximum !
Alliant Reloder-19 99.6 64.3 4.16 2734 99.9 63000 10910 1.251 ! Near Maximum !
Alliant Reloder-17 90.2 61.1 3.96 2730 100.0 63000 10139 1.256 ! Near Maximum !
Hodgdon H1000 110.0 70.2 4.55 2726 99.3 59512 11216 1.262 ! Near Maximum !
Ramshot Hunter 95.1 63.4 4.11 2722 100.0 63000 10446 1.259 ! Near Maximum !
Hodgdon H4831 SC 100.9 65.8 4.26 2715 99.0 63000 10850 1.248 ! Near Maximum !
Hodgdon H4831 104.9 65.8 4.26 2715 99.0 63000 10850 1.248 ! Near Maximum !
Norma 204 94.5 63.0 4.08 2711 99.8 63000 10632 1.253 ! Near Maximum !
Vihtavuori N550 92.0 60.6 3.93 2697 100.0 63000 10114 1.271 ! Near Maximum !
Norma URP 94.6 60.4 3.91 2695 100.0 63000 9974 1.267 ! Near Maximum !
Winchester Supreme 780 98.3 66.9 4.33 2692 99.8 63000 10390 1.257 ! Near Maximum !
Accurate 4350 93.8 60.5 3.92 2690 100.0 63000 9916 1.285 ! Near Maximum !
Vihtavuori N165 105.1 67.1 4.35 2685 100.0 63000 10154 1.262 ! Near Maximum !
Accurate 3100 102.9 66.4 4.30 2683 100.0 63000 10017 1.287 ! Near Maximum !
IMR 4831 99.3 61.4 3.98 2678 100.0 63000 9753 1.277 ! Near Maximum !
Vihtavuori N160 105.1 65.0 4.21 2671 99.3 63000 10234 1.258 ! Near Maximum !
Hodgdon H4350 97.2 61.3 3.97 2671 100.0 63000 9987 1.259 ! Near Maximum !
IMR 4350 95.4 61.2 3.97 2670 100.0 63000 9960 1.259 ! Near Maximum !
Hodgdon Hybrid 100V 97.1 60.6 3.93 2650 100.0 63000 9187 1.270 ! Near Maximum !
Vihtavuori 24N41 110.0 75.6 4.90 2627 88.7 55045 11455 1.315 ! Near Maximum !

As you can see, there are several powders that would give you better case fill and slightly more velocity. That load would pack quite a punch, that's for sure.

 

[Fortydelta]

Thanks. Just something that I want to try. Might work well, might not. We'll see.

 

[Guy Miner]

Nearest I've come to that is 210 gr Bergers over H4350 for about 2815 fps. Very accurate load.

And welcome to the Nosler Reloading forum!

Regards, Guy

 

[SJB358]

Welcome to the forum. I'd love to see some groups from the 220 PTs out of the 300WSM. Cool combo if it shoots.