Hey everyone

I am heading down to Montana next fall for a muley hunt and need a bit of advice to be sure I can make it happen the right way with as little pain as possible. My questions are primarily related to the border crossing itself. So...the questions

1) Bringing the rifle and ammunition across the border
- I have done a bit of research and understand that you fill out the ATF form and submit well in advance to get the right approvals. Correct?
- Should I be going inside on the Canadian side before crossing to get some sort of paperwork identifying the rifle so it is easy to come back?
- Anything I am missing on this part? Do I need the exact boxes of ammo I intend to bring across?

2) Assuming success - bringing the meat / antlers back
- Is there anything that I can do in advance to make this smooth?
- What do I need to do in terms of handling the meat to make it easy at the border?
- I will probably need to take the deer down to quarters or even boned out to get it in the cooler for transit. Will that be a problem?

What am I missing? Do I have all / some of this right?
Any advice / input is appreciated - I am working well in advance so I can make life a bit easier in the fall.
Thanks