For Defense:
1. AK: Will always go bang and parts, ammo, and mags are plentifull.
2. SKS: Will always go bang, reasonably accurate, and ammo is still plentifull.
3. Saiga: Will always go bang and ammo is readily available for any of the big 3
4. Marlin 336: Accurate, Reliable, and fast handling for a non-semi-auto
5. Mosin Nagant: Ammo is still readily available but probably the slowest handling of them.
For Hunting:
1. Marlin 336: The most accurate and plenty powerful for all North American game.
2. Mosin Nagant: If rifle is accurate then plenty powerful for all NA game.
3. SKS: Accurate enough and powerful enough for most NA big game
4. Saiga: More accurate than most AKs and from 223(small to medium game) to 308(big game)
5. AK: Accurate enough within 150 yards for most big game
For All around:
1. SKS: The best ratio between defense reliability and accuracy.
2. Marlin 336: Very accurate and still fast enough for defense
3. AK: Accurate enough for closer range hunting but great for defense
4. Saiga: Accurate but due to unavailability of mags not the best for defense
5. Mosin Nagant: Although can be very accurate not very good for fast handling.