Originally Posted By: Researcher
The one Iver Johnson catalogue I have that includes the SKEET-ER says "Regular skeet boring; right barrel 75% 30 in. circle at 30 yards; left barrel 75% at 20 yards."


Pretty much the same thing as the numerical pattern values I found from Iver Johnson. The left (open) barrel on those guns must be close to true cylinder, which should print about 70% at 25 yards.