It really depends on the gun and load. I shot the Jebs .560 and the pattern is pretty even and consistant with 1 5/8oz of TSS 9'S and 9 1/2's but the core is fairly open. 208 in the 10 was the best I got out of it. Tried an IC .555 and got 288 in the 10 and the 20 was spotty. Ordered a .562 Sumtoy and I'm working my way up from here. Shot a .582 undertaker yesterday and was awful.
Some barrels and loads like a tighter choke some like a more open choke. Only one way to find out really.
