It appears that the traditional pre-season best load for pheasant thread has begun wink
Y'all remember the fella on Shooting Sportsman Forum maybe 10-12 years ago who fashioned his-self a pheasant expert...based on his extensive experience shooting pen-raised birds on a preserve in Alaska smile He advocated 1 oz. 7s in a 20g when would "go clean through a pheasant at 40 yards!" I think he finally admitted to having never been to the Dakotas for wild birds.
Bro. Larry no doubt remembers.

To the OP, please let us know how your pattern testing turns out. I'm afraid you will find some pheasant sized holes at 40 yds. with 1 oz 5s. I limited my shots to 30 - 35 yds., and avoided the straight going away shots with only back to hit at that distance. Lots of birds flinch and drop feathers only to fix their wings and sail away...then drop in some thick stuff and not to be found by good dogs.