RE: Broadheads and practice
One of the advantages of heads with non-replaceable blades - Magnus, Bear Razorhead, Zwickey, Steelforce, etc - is your practice blades and hunting blades are one and the same. You just sharpen them up before hunting.
Putting new blades in replaceable blade heads always left a question mark in my mind... Will the broadhead still shoot the same? Even though the odds were very much in favor of the head shooting the same, I never did like that small bit of uncertainty. That's the main reason I went back to good ol' cut on contact heads.