With a compound, I go for speed. But with my trad gear, I go with a greater foc so I tend to have slow arrows pushing a heavy head. I do so for penetration plus it makes for a quieter shot. It seems like I see the impact on every bow, fast or slow. The few times I have not seen the arrow make impact, I just read the blood on the arrow.

Jeff if you don't mind could you list exactly what you are using on your arrows including type of arrow to get such a heavy and FOC arrow. (vanes, wraps, tips, etc.)

PSE Black Mamba arrows (28") - 260.4gr.
100gr muzzy brass insert - 100gr (duh)
100gr BH - 100gr
4" QS vanes - 25gr
nock - 9gr
6" reflective wrap - (?? gr)

Looks like +/- 500gr. I may go to a 125gr BH....if it looks like it'll be under 500gr.

Would it be necessary for such a heavy arrow to shoot the 4 in vanes for stabilization?

Not sure if it's necessary....but I shoot a Bowtech...and I'm tired as heck of dealing with clearance issues with Blazers.

I won't shoot 'em again.

How do you determine the correct spine for your arrow

I usually shoot feathers but not sure how they will fit into my new arrow setup

Matt:

For the distances I shoot, here, bowhunting whitetails and turkeys....I don't worry about spine....as long as I have PLENTY.

I am in the same area as you so if I go with the FMJ's at .300 spine would that be sufficient?

I'm not the one to ask. I have no idea.