This is from the Mighty 10 Gauge revision 3 and is their lead shot favorite hunting load with stacked card wads. I am guessing you will be using Rocky Mountain hulls with 209 promers.
CCI- 209 primer
34.0 grains Unique
(4) 10 ga .100 nitro cards
+ (3) 10 ga 1/2 fiber wads
1 1/4 oz shot
9 ga over shot card (I added this for the brass hull)
In a Win 3.5 poly steelhead hull with star crimp or in a 2 7/8 hull with roll crimp this load is 8000 psi at 1280 fps. The pressure and velocity may be a little less in a brass hull.
Harry