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N 203-B Powder
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<Burnt Powder>
posted
I got a can of Norma 203-B powder and expected it to be in the burn chart range somewhere between 202 and 204. It probaably is, but I can't find any conclusive data on it. Found sone data for the 6 Br but that's it. I can't get the Norma site to come up to try to get any data from there. Anyone know anything about this powder, what it's like, and data for .17 Mach IV, .222, .223, .22 Br, .22-250, .243, .308, 7-08, '06, 35 Whelen, I could go on and on, but these are cartridges I am suspecting may be sutiable with 203-B that I have.

BP

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Speak softly, but carry a big stick!

 
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<K9>
posted

Loading Data 203-B
Caliber Bullet/Weight Primer Load C.O.L/mm. Vel.
223 Rem Sierra 69gr SP WSR 1.66g C
25.6gr 57.4 935 m/s
3068 fps
1.58g
24.4gr 878 m/s
2881 fps
22-250 Norma 50gr SP
65701 RWS 5341 2.42g
37.3gr 60.5 1155 m/s
3790 fps
2.30g
35.5gr 1075 m/s
3527 fps

6mm BR Hornady 70gr SP WSR 2.07 g (C)
31.9gr 53.5 1007 m/s
3303 fps
1.86g
28.7gr 879 m/s
2884 fps
Hornady 80gr FMJ WSR 2.07g (C)
31.9gr 55.5 980 m/s
3215 fps
1.86g
28.7gr 900 m/s
2953 fps
Nosler 95gr Ball.Tip WSR 1.90g
29.3gr 57.0 888 m/s
2913 fps
1.70g
26.2gr 801 m/s
2628 fps
Sierra 107gr HP Match Moly Coated WSR 1.98g
30.6gr 60.2 860 m/s
2821 fps
1.78g
27.5gr 785 m/s
2575 fps
Sierra 107gr HP Match WSR 1.95g
30.1gr 60.2 855 m/s
2805 fps
1.75g
27.0gr 784 m/s
2572 fps

6.5x55 Norma 140gr Vulkan
66533 RWS 5341 2.45g
37.8gr 74.0 778 m/s
2552 fps
2.20g
33.9gr 710 m/s
2329 fps

7x57 Norma 150gr FMJ
67003 RWS 5341 2.85g
44.0gr 76.7 826 m/s
2710 fps
2.70g
41.7gr 770 m/s
2526 fps
Norma 154gr SP
67033 RWS 5341 2.77g
42.7gr 75.6

807 m/s
2648 fps
2.49g
38.4gr 729 m/s
2392 fps
7x57 R Norma 150gr FMJ
67003 RWS 5341 2.68g
41.4gr 76.7 774 m/s
2539 fps
2.40g
37.0gr 707 m/s
2320 fps
Norma 154gr SP
67033 RWS 5341 2.65g
40.9gr 76.7 764 m/s
2507 fps
2.52g
39.2gr 640 m/s
2100 fps

308 W Norma 180gr Oryx
67638 RWS 5341 3.00g
46.3gr 68.7 798 m/s
2618 fps
2.70g
41.7gr 724 m/s
2375 fps
Norma 200gr Oryx
67639 RWS 5341 2.81g
43.4gr 68.7 734 m/s
2408 fps
2.70g
41.7gr 645 m/s
2116 fps

30-06 Hornady 130gr SP RWS 5333 3.84g
59.3gr 78.5 1008 m/s
3307 fps
3.46g
53.4gr 883 m/s
2897 fps
Norma 150gr SP
67624 RWS 5333
"
3.48g
53.7gr 78.5 897 m/s
2943 fps
3.13g
48.3gr 796 m/s
2612 fps
Hornady 165gr SPBT RWS 5333 3.25g
50.1gr 82.0 805 m/s
2641 fps
3.18g
49.1gr 773 m/s
2536 fps
Norma 180gr Oryx
67638 RWS 5333 3.13g
48.3gr 81.0 775 m/s
2543 fps
2.41g
37.2gr 683 m/s
2241 fps

8x57 IS Norma 196gr Oryx
68001 RWS 5341 3.25g
50.1gr 74.8 790 m/s
2592 fps
2.92g
45.0gr 714 m/s
2343 fps

.338 WM Hornady 225gr SP RWS 5333 4.16g
64.2gr 84.5 830 m/s
2723 fps
3.78g
58.3gr 768 m/s
2520 fps
Hornady 250gr SP RWS 5333 4.03g
62.2gr 84.8 788 m/s
2585 fps
3.80g
58.6g 759 m/s
2490 fps

.358 NM Nosler 225gr Part. RWS 5333
"
4.20g
64.8gr 81.2 852 m/s
2795 fps
3.88g
59.9gr 803 m/s
2635 fps
Hornady 250gr SP RWS 5333 4.42g
68.2gr 83.9 836 m/s
2743 fps
3.98g
61.4gr 766 m/s
2513 fps
Swift 250gr A-Frame RWS 5333 4.02g
62.0gr 80.7 795 m/s
2608 fps
3.60g
55.5gr 721 m/s
2365 fps

9.3x62 Norma 285 gr Alaska RWS 5333 3.75g
57.9gr 82.0 744 m/s
2441 fps
3.56g
54.9gr 706 m/s
2316 fps

.375 H&H Hornady 270gr SP RWS 5333 4.67g
72.1gr 90.7 809 m/s
2654 fps
4.20g
64.8gr 742 m/s
2434 fps
Nosler 300gr Part. RWS 5333 4.63g
71.4gr 90.3 802 m/s
2631 fps
4.17g
64.3gr 729 m/s
2392 fps


THe above is from Normas site.... If you can't get anything out of that mess (it's copied straight off) try this:

http://www.norma.cc/nladdtab/Laddata%20203.htm

It might work.. (I couldn't get on the site the usual way either.
I've used the 203-B in my 9,3x62 this season and as I don't have a chronograph I have no idea about the velocity but the reciol sure enough increased compared to my usual 201 load (some of it came from the heavier load but not all!!)

Cheers

K9

 
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<Burnt Powder>
posted
K9

Thank you so much!! I surely hope you didn't have to type all that info out. I'd still be plunking away! Again, Thanks! I am sure I can figure something out from there. I appreciate your help!

BP

------------------
Speak softly, but carry a big stick!

 
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<K9>
posted
No worries! I juist pressed ctrl+C and then ctrl+V and that was it! Glad to have helped you!!

Cheers

K9

 
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