Hello,
I shoot a 20 ga. Montefeltro, (bought new, used 4 seasons, upland, rarely in rain)usually using non-premium (Estate) high-base No. 6 loads.
Last season, my 3rd round wouldn't chamber, and sometimes my 2nd wouldn't either.
I've field-stripped and oiled where I thought I should several times. Does this mean my mag spring needs replacing?
And, is this best left to a 'smith because I read the thread about being careful, padded vise, headspacing, etc....
Thanks again.