I've been shooting muzzy's for the past 9 years. I can't complain they have been real good to me. Last year I had some problems getting them to fly straight and I'm sure that's why I missed the only deer I shot at

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Now, I'm looking at picking up some mechanicals but don't they all just look a like or what? The thing that worries me most about a mechanical is hitting the shoulder blade square on. I've done this twice with muzzy's and neither deer went very far at all. That's the thing that impresses me the most about Muzzy's. So, what I'm looking for is an expandable that is really good at going through bone.
I tried jak-hammers one year, got the deer but didn't have good penetration. as i'm typing this i see an add at the top of my screen with the guy that recommended the jak-hammers to me, lee lakosky (he used to work at the pro shop by my house. by the way, i'm getting off topic but did anyone see 'getting close' this week, 'aerial bow fishing'. tiffany in a camo bikini top.....rrrrrrrrrrrarrrrrrraaarrrrrrrr!!!!!!!!!
anyway, broadhead advice....
Any ideas?