WC- 735 in 303Br

Not in the 303 Brit, but I have used it in the 7.62x39, 308, 30/06 and 7.62x54. I found that H322 data and up to starting load data for H335 and IMR3031 works well. Aside from the 7.62x39, I found it too fast to deliver top velocities and accuracy was good, but not he best possible. It's really a small cartridge powder designed for the 223 (5.45x45).
 
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Andy said:
Not in the 303 Brit, but I have used it in the 7.62x39, 308, 30/06 and 7.62x54. I found that H322 data and up to starting load data for H335 and IMR3031 works well. Aside from the 7.62x39, I found it too fast to deliver top velocities and accuracy was good, but not he best possible. It's really a small cartridge powder designed for the 223 (5.45x39).[/QUOTE]

5.56x45...
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Andy said:
Not in the 303 Brit, but I have used it in the 7.62x39, 308, 30/06 and 7.62x54. I found that H322 data and up to starting load data for H335 and IMR3031 works well. Aside from the 7.62x39, I found it too fast to deliver top velocities and accuracy was good, but not he best possible. It's really a small cartridge powder designed for the 223 (5.45x45).
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I shoot it from all the same rifles as Andy. I have found that although it is not the best powder for each cartridge, it gives me adequate accuracy for all my hunting purposes. It is about 5% faster than H335 and I reduce it by 5% for weight.
H335 data, jacketed bullets:
100 gr 39.6gr 2390fps Max 45.0gr 2680fps
125 gr 45.0gr 2678fps Max 49.0gr 2890fps
150 gr 44.0gr 2529fps Max 48.0gr 2729fps
180 gr 38.0gr 2173fps Max 41.0gr 2323fps
215 gr 34.3gr 1864fps Max 39.0gr 2047fps

This is the data I use and I have not blown up anything yet. However, I don't go to max loads either and I reduce the start loads by 5%. Gets me where I want to be. Enjoy!
 
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