Patterning 12ga trap gun

[X-RAY]

Got back into trap shooting and would like to pattern my shotgun.
I'm shooting singels and need to know a few measurements.
#1) What distance shoud I pattern at if I'm shooting singels?
#2) How large should my "target" paper be?
I am using a Remmington 3200 Special trap with a full choke over an improved modified.
Any info would be appreciated.. Thanks

[Dave McC]

1, 35 yards. Most folks hit their birds between 33 and 37 yards when shooting at 16 yards.

2, 4'x4' if you can.

Pattern both barrels. You may find a better spread with one given the same load.

HTH....