Feel your pain. Watching out for primers myself. Just bought a new Henry Single Shot 357Magnum. Gun shop was awash in Henrys as they had just received an order. Also, mine says made in Wisconsin. Think major problem is more buyers than products. Be patient, inventory will come back.
PS: Love the Henry Single Shot. Had read of heavy trigger after I bought it but when I got around to shooting it trigger was wonderful; somewhere around 2.5/3.5 lbs. Have no way to accurately measure but definitely moderately light and crisp.