Bob, you'll probably want some spreader loads for woodcock and to date I don't believe RST is making such a load but others are and I'm sure someone will come on and recommend one or two.
I use RST 2 1/2" No. 8 shot for upland birds and clays but for jump-shooting Mallards, Blacks and Woodies you would do better with No. 6 shot in 2 1/2" 1 oz. "Lites" which comes in shot sizes 5,6,7,7.5,8 & 9 from RST. Go to
www.rstshells.com to see their complete line of 10 ga. through 28 ga. loads.