Originally Posted By: tudurgs
I was told that someone did a pattern test of the various M42 chokes between Cyl and Full and could not discern a significant difference in performance.


Whoever gave life to this canard never actually patterned a .410. My full M-42 will put approx 67% of a 3" RP #6 payload into a 20" circle at 40 yds. If you fire a 1/2 oz #9 skeet load at just 20 yds through true .410 cylinder you will find target-sized holes at the exact pattern center at least 2 of 10 tries.

Sam