I am in the UK so getting the guns fixed isn't a problem, however problems are infrequent and you have some good people in the States to see to them if you have need to.
I shoot nothing but old english guns and the problems I have had over the years are almost nothing. The 130 year old rear trigger blade on my Purdey broke one January when the gorilla who poses as my girlfriend's cousin pulled hard on a covey of partridges with the safety on!
apart from that, i have had to do nothing at all in the way of repairs to any of my guns, once they are made serviceable.
Buy an honest Birmingham boxlock non-ejector for £400 and use it to death.
2.5" shells with 30g of No6 will kill anything at under 40 yards if you hit it square (no moose jokes please).
You will get a brit boxlock 12-bore anywhere from 6lb to 8lb - just decide what you want when you start looking.
