I have played against ogres a number of times and would have to agree with LT that sallies are a far better choice than razordons, especially since it helps keep the list all comers vice tailored for only one army. Here are a few uses I have found for sallies against ogres:
1) Ogre Star (i.e. 18+ ironguts + characters) - the unit is so massive it is impossible to miss unless a misfire occurs. Aiming down the middle of the centre rank from ~7" away, the template will hit an average of ~9 ogres. This will result in 3 unsaved wounds per template hit so each sallie can effectively remove an entire ogre model every time it shoots. The added bonus of autopanic and negating regen also helps with skink shooting. Killing even a couple ogres before they hit a block of saurus or TG can make a big difference since it reduces the strength of impact hits and removes 3 x S6 attacks. The chance of a failed panic is minimal though since most ogrestars have the +1 LD banner and a BSB to re-roll.
2) Hound Hunting - although skinks are ideal for killing these disposable units of dogs, sallies can beat them readily in combat, allowing skinks to focus on higher value targets such as ironblasters, stonehorns or thundertusks.
3) trashing trappers/gnoblars - another chaff unit that sallies can crush in combat (or flame if a large unit is deployed), again leaving skinks to shoot at more important targets.
4) Leadbelcher (LB) Bunker - a favourite ogre tactic is to park these shooters in a building and then lay waste to all within range since the rules state up to 10 models can shoot from a building and the shooting rules do not differentiate between infantry and monstrous infantry. Since sallies hits are flaming each template does d6 hits that get to re-roll failed to wound rolls vs a unit in a building. This virtually guarantees at least one dead LB and a decent chance to panic them if they are outside of the general's and/or BSB range.
5) Ironblasters - Again, less than an ideal use for sallies but their mobility allows them to move into a flank charge position very quickly against these mobile cannons and thanks to the M&H rules, a cannon ball shot at them will only kill a skink 1/3 of the time. A flank charge is often successful at breaking an IB since only the ogre on top can fight (it is a chariot) as the sallies will start combat up by 2 and have a decent chance of inflicting another wound if it is a two pack. The IG is one of the most effective weapons in the ogre army IMHO and even if the sallies only tie it up for a couple of rounds, at least it isn't dropping a steggie, killing a bunch of TG or picking off a scar vet cowboy
That is about it for their uses. Definitely keep sallies away from anything with thunderstomp as they will get rapidly crushed. In an emergency or at a critical juncture, the sallies can be tossed into a combat vs regular ogres (on a flank) to help turn the tide but be prepared to lose them if too many ogres are in contact with them.
