700X is still made at the same factory - should be the same, just a different owner. In my 2004 Alliant book they show in the Remington hull - 31grs of Unique with a Win primer, SP-10 wad, 1 1/4oz, having just 7500psi at 1265fps. Don't know why they didn't show it with the Fed or Win hull - they're all a straight walled hull and everything should be real close as far as pressure and velocity. Maybe just didn't want to spend the extra dime for test. In the 12ga 23grs to 24grs and a 1 1/8 in Fed shell [ straight walled again ] the pressures are in the 7700 to 9100psi. So your load in the 10 would be even less because of the larger diameter chamber. You should be very safe, maybe even get some squib loads in the winter. I don't know about that without testing, but I sure wouldn't worry about it. As a matter of fact, I just bought #8s of Unique and will be trying it my 10 soon as the Green dot runs out and I'll be trying the very load you listed.
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Paul Harm
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