I have a 17 Heebee barrel for my Encore. Heavy Barrel from Bulberry. I've got my cases all formed and am just beginning to work up loads. Have shot some small groups already. I've reloaded for years and was interested in forming cases, and I picked the Heebee. Your best source for information is the woodchuck den (
http://www.woodchuckden.com/). Order the Sensational Seventeen Manual - it has information on a bunch of 17 wildcats. There's a couple of other sites that will have info as well - just search. The Heebee seems to be one of the more balanced 17 wildcats.
I've also got to warn you, going to seventeen can get expensive. Besides all the dies, cases, bullets, I needed all kinds of new stuff - cleaning rod, powder funnel, case trimmer, because most stuff was made for 22 cal and up.
Buts it's a fun round to shoot.