By the time the 1187 Trap model was introduced, this was no longer an issue. And it was an uncommon problem anyway.Remington had a run of early 12 ga. 11-87 guns that the soldered stainless steel magazine tubes to receiver would come loose.
The special trap chokes have the same outer dimensions and threads as Rem Chokes, and they are interchangeable.It is a trap grade, now will this take rem chokes
Scott HanesThe Trap Extra Full is .710", so it is .017" plus the barrel's .018" = .053", which is a Full. This is a good choke for advanced singles and doubles, and midrange.
Thanks for pointing that out. I edited it to .035". Dyslexia of the fingertips.Great Explanation, Brian! Look at all it took to explain to folks what a "minor" change at Remington did!! I worked there then and had a difficult time getting the Gun group to make sense of the whole thing.
Minor note, your second choke (Trap Extra Full) would result in .035 constriction, not .053. I can understand a minor error in the time it took to write that up.