ORIGINAL: Arthur P
I imagine the guy at your shop was talking about deer hunting, though there are some mechs that would work for deer atyour draw weight. Smaller ones like the Steelhead, for instance.
Just about any mechanical will workfor turkey with your setup. You don't want passthru hits on turkeys anyway. You want to disable the wings and whack out the vitals. Or take his head off. Anything to keep it on the ground. Turkeys do not leave very good blood trails when they fly off.[&o]
There is a specialtyhead for turkeyI've heard a lot about but haven't had a chance to look at yet. Called theGobbler Guillotine. It's not a mechanical though.
What Arthur said is top notch, I think it your speed you would have enough KE for mechanicals on deer, but they would have to be mechanicals like Rocky Mtn Snyper and Snyper XP3, or something like a small Rocket Steelhead.
For turkey, check out the NAP Gobbler Getter, thats all that comes to my mind.