Same basic idea as my #1259939152196010004 thread. Just calibers as they make.sense to me.
Tier 1- birdshot, .22lr, .22H, 300gr. Arrow/bolt, 350gr. Traditional arrow
Tier 2- .223, .22-250, .243, 6.5, 20ga buckshot and slugs, 16ga buckshot, .357 magnum, .45 Colt. .45 air rifle. .50 caliber round ball, 16ga slugs, 12ga slugs and buckshot, 420gr. Bolt/arrow, 540gr. Traditional arrow
Tier 3- .243, 6.5, .270, .30-30, .30-06, .308, .303, .300CM, 7mm, .50 caliber sabot and minie ball, 7.62x54r, .577/450 black powder, .45 air rifle, .45 colt, .44 magnum, .357 magnum, 420gr bolt/arrow, 540gr traditional arrow
Tier 4- .30-06, .308, .303, .300CM, .338, 7mm, .50 caliber sabot and minie ball, .577/450, .44 magnum, .454, 10ga slugs and buckshot, 12ga slugs, 600gr. Arrow/bolts, 700gr. Traditional arrow
Tier 5- .338, .470, 9.3x74R, .454, 10ga slugs, 600gr. Arrows/bolts, 700gr. Traditional arrow
It's not perfect, but it makes things more useful than they are now. Ideas are welcome and I didn't include the community weapon pack calibers because we don't know enough yet.