There are too many variables to generalise across board for all the Tiny Ten. Hunting the Tiny Ten (or Twelve) can be more difficult than the big six. They are found in so many different habitats and will therefore require more specialized rifles to collect them by the serious Tiny ten trophy hunter. Some are found in very dense forest other's high up in the mountains with very little stalking cover.
If you are going on a DG or PG safari and a few of the Tiny Ten may cross your path, then take your normal rifles and pack some solids. Here I would recommend round nosed solids as opposed to flat/meplat nosed solids or conical solids. The round nosed ones make a smaller wound channel and will cause less damage to the cape. Try to stay away from high velocity calibre's or download them for the same reason.
For the more serious Tiny Ten trophy hunter, as an example, while hunting the Tiny ten I have ended up trying to shoot Red Duiker and Suni in the coastal forests using a shotgun, then the little buggers pop out 100 yards down an open track and no shot is possible. Likewise, I have sat calling for them in bush where their middens have been found and then have them almost run me over, rendering a shot with a rifle useless. I subsequently bought 2 combination rifles (9.3mm x 74R/12ga combo and a 7 x 65R/12ga Combo, fitted with a claw mount detachable scope-for my son). Loaded with the correct solids you are ready for any of these scenarios. They also double as our bush pig and warthog guns.
For the serious Tiny Ten hunters, I recommend below as a guideline.
Tiny Ten Species
1. Blue Duiker-Shotgun or Combination. Rifle barrel-solids.
2. Damara Dik-Dik-Shotgun or Combination. Rifle barrel-solids.
3. Cape Grysbok (Southern Grysbok)-Rifle, Shotgun or Combination, depending on terrain (nocturnal, best bet at last and first light).
4. Common Duiker (Grey Duiker or Bush Duiker)-Rifle, solids or bonded softs at lower velocity calibres.
5. Klipspringer-Rifle, solids, ranges could be long then bonded softs at sensible velocity, as they have hollow hair and are very prone to hair slip. You want to minimize the shot damage.
6. Oribi-Rifle, solids, ranges could be long then bonded softs at sensible velocity.
7. Red Forest Duiker (Red Duiker, Natal Duiker or Natal Red Duiker)-Shotgun or Combination. Rifle barrel-solids.
8. Sharp's Grysbok (Northern Grysbok)- Rifle, solids. Shotgun or Combination. Rifle barrel-solids.
9. Steenbok (Steinbuck or Steinbok)-Rifle, solids or bonded softs at lower velocity calibres.
10. Shotgun or Combination. Rifle barrel-solids.
The two that are commonly added/substituted in South Africa:
11. Rhebuck (Grey Rhebuck or Vaal Rhebuck). Rifle-flat shooting as ranges will more than likely be long. Premium bonded soft.
12. Mountain Reedbuck. Rifle-Premium bonded soft. Depending where you hunt them ranges can be long.
Good luck, hope you are successful, the Tiny Twelve are awesome to hunt.