Do the test. I did and found my gun was shooting way high and to the left. Sorted that now. Also my 1/4 choke gave the nicest even pattern out to 45 yards. The mod choke was a bit tighter but not as much as you'd think and wasn't anywhere as even. The beretta 1/4( imp cyl) choke on my 390 doesn't sit flush but protrudes out like an after market one would. I guess they were designed with steel shot in mind and the other chokes for both? With the limited testing I did the steel penetrated as much as lead with number 2 shot and I think 3 shot. The new fast steel is a big improvement over the original steel shot loads.
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