im using rage 3 blade mechanicals

im shooting deer do you think they will kill 1

50 lb will kill any deer with a sharp broadhead. If you are worried I would say to use any type of cut on contact head. Or a two blade cut on contact.

Im pulling 50 right on the dot and im using 3 blade and they shoot great but their not mechanicals

I don't know why you would pick mechanical broadhead if you are only shooting at 50#. I think they willkill deerbut they won't penatrate and get passthroughs as good as a COC broadhead. A COC broadheads would be better for your set up.

NO!!! Too light a pull for a mechanical. Get over it. Get you a nice sharp fixed head and do it. Even the manufacturers say 55 pounds as a minimum I think. I've always felt 60 was a safe place to start at. Don't even think of mechanicals.

Depends on what kind of kinetic energy you are producing.

Go with the 2 blade.

i have heard of people using the rage broadheads with poundage in the high 40's and having great success with them.

No, you just don't have enough KE. Yes they will kill under ideal conditons, but why take any chances? use a head that will provide you with the best chance for success, and that in my opinion would be a good low profile fixed blade heads.
www.broadheadtests.com