I needed a 16 gauge 1 ounce load for new 2.5 inch Cheddite hulls and Gualandi wads that I bought from Precision Reloading and Keith was kind enough to work up a load and test three of them and give me the pressure. Using Longshot the three rounds averaged 7270 p.s.i. at 1200 f.p.s.
That kind of personal service makes me buy more items from Keith. Maybe he already has or will work up a load for you. I would be interested in it also.
Precision Reloading: 1 800 223-0900
http://www.precisionreloading.com/
p.s. I loaded them with new components for half the cost of factory 2.5 inch ammo. When I need more or a different shot size I have them right at hand now.