Anybody been to the gunshow that they have scheduled for the end of August in Billings MT this year?

My brother and I will be in Big Timber that Friday and I wondered if it might be worth the time and drive to go over to the show in Billings that Saturday. (We are looking for guns, ammo, used leather, gun parts, old ammo, vintage books and magazines on guns and shooting, etc. NOT "black rifles," beef jerky, fake Nazi memorabilia, or Pakistani cutlery. Or turkey fryers--"poor man's urban renewal"!).

Any experience gratefully listened to!