Sounds fishy, I would say the landowner knew who it was and what they were doing. It was like he was saying if you report this, then I will make you pay the price for it. It is your decision on what to do, but I would report it. I would first and foremost be mad as h#ll if someone was shooting a gun in my direction during bow season, especially if that person was a no-good poacher. It is people like that who give good hunters a bad name, and a landowner that would allow it then threaten you is no better than the poacher. Just my opinion.