would like to know if i should be concerned about a misfire,have read a lot about others having misfires.brand new ush 12 ga only fired 15 times 5 rem.copper solid,10lightfield 1 rem.misfired now i am not sure i want to carry it in the woods,but it does shoot a very good group with lightfields.should i got another firing pin spring,i did notice the rem. primer seemed to be recessed more than i thought it should be,but like i said earlier a lot of others seem to be having this same problem with h&r ush,thanks