Getting the timing right on one at a time can be a bugger as well. I saw an APC crew in Vietnam work on their .50 BMG for an hour trying to get the timing set and give up with it still firing single shots.
Getting the timing right on one at a time can be a bugger as well. I saw an APC crew in Vietnam work on their .50 BMG for an hour trying to get the timing set and give up with it still firing single shots.