Just a bit of advice on coins. The indian pennies I have dug in the past have all hit a little below penny on the 250.
When I ran the 250 I would hunt in relic mode but only dig the decent coin signals. The deeper the target is, the more iffy the signal becomes. So, any signal I got in relic mode I would stop and investigate. If it appeared to be a deeper target I would try to get a half decent and somewhat consistent coin signal out of it by walking around the target. Sometimes those deeper iffy signals turned out to be coins. Sometimes they were junk. Experience will eventually help you know which ones to dig and which ones to pass up.
-Swartzie