Not sure what you mean, but my 930 with a +5 (9 total) Nordic needs a very firm hand cycle to chamber a round.
It was this way with the stock tube also and at first I thought the gun had a problem but it loaded every time when shot just not when trying to chamber the first round by hand.
I think it has gotten easier with use.
David E.
it's just kinda lame...i know it feeds when shot, but hand cycling it will never work with a full tube...ever. tried nordic springs, cut to differing lengths, etc. just sucks.