CMP has a forum with lots of information. If you ship it home I believe you save sales tax. CMP can ship to your house. It does not have to go to a FFL.
Ok I'm joined the garand collectors association to meet the affiliated requirement but all I have is a email confirmation is that sufficient? Also does my CCW permit meet the requirement for being involved in a shooting sport? I think it does just not sure. Trying to get my ducks in line before Saturday.
I would buy as much ammo for it as you can afford while there though.
You need to be a member of an associated group or club to purchase from the CMP.
If I'm not mistaken, and I don't think I am, you will need to have it sent to an FFL in your state of residence.
The CMP is an FFL. You can be Indiana resident and take gun home with you.