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Old 07-12-2009, 07:46 PM
Bambob Bambob is offline
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Join Date: Nov 2006
Location: Northern Nevada
Posts: 342
Default WW 780 vs. some others

I realize this powder is slower than most small caliber shooters use but some of us still shoot larger bores and may be interested in this. I tested some new WW-780 against H-4831 as a reference, and 2 different lots of H-450, one lot of WW-MRP, and one lot of WW-785 ball powders. The 780 looks like the WW-MRP and the WW-785. One lot of H-450 looks like the 780 with mostly "flattened" balls while the other, much older lot of H-450 is pretty much all perfectly spherical.
All these powders chronographed within 50 fps of the H-4831 reference and each other. I see that Hodgdon no longer lists H-450 on their website. Never fear, the new 780 is pretty much the same burn rate but made with "Extreme" technology.
One surprise was that the old WW 785 showed more pressure than any of the others with a heavier bolt lift and only a slight increase in velocity. This was the "premier" powder in my last 22-250 AI with 80g bullets.

Bob
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