After over a dozen years of fairly heavy use, including maybe an above average number of heavy (goose) loads -- my Benelli M2 started limping. Installed a new Wolff "+ 25%" spring. First couple of boxes of target loads, had a couple of just barely failures to feed (bolt too fast, beat the shell emerging from the magazine tube by a hair). Then today shot a bit over 2 boxes with zero misfeeds, apparently just needed a tiny bit of break in --- and not even with all-up loads (these were 2 3/4 dram , 1 1/8 oz STSs). BIG difference in the authority with which the bolt rides forward and locks up.
The springs are inexpensive and I believe made right here in the good ole USA (unless PA has seceded recently).
The springs are inexpensive and I believe made right here in the good ole USA (unless PA has seceded recently).