An all-out attacking set is the most appropriate way to make use of Tauros's qualities, as he has the power and coverage to wallbreak and the Speed to perform a late-game sweep, provided that his counters have been removed. Rock Climb, albeit inaccurate, is Tauros's best option as a STAB move, and hits quite hard thanks to the boost from Sheer Force. The opponent's Pokemon must have impressive physical bulk and/or a resistance to Normal-type moves to avoid being 2HKOed. Earthquake is a mandatory coverage move that hits the Rock-types that resist Tauros's STAB moves for super effective damage, dealing a considerable amount of damage to most of them. In the third slot, Tauros runs Fire Blast, which is an important selling point of this set and allows him to differentiate himself from his competitors. In fact, in spite of his measly base 40 Special Attack, Tauros can use the move to 2HKO some otherwise problematic physical walls, such as Steelix, Tangrowth, and Ferroseed, and OHKO Durant and Escavalier lacking Occa Berry (the latter only after Stealth Rock damage). The fourth slot is basically a matter of preference: Zen Headbutt, provided that Stealth Rock is up, has a chance to 2HKO Poliwrath and Golurk and a better chance, compared to Earthquake, to 2HKO Qwilfish, whereas Rock Slide mainly targets Flying-types such as Moltres, Sigilyph, and Aerodactyl.
The EV distribution listed in the set is in practice the only one Tauros can afford to run, and a Naive nature is compulsory as well, given that Special Defense is his only expandable stat. More specifically, a Special Attack-lowering nature would diminish the power output of Fire Blast, which is barely adequate to begin with, and an Attack-boosting nature would deprive Tauros of the ability to outspeed important threats such as Durant and Manectric. If moves with low accuracy aren't your cup of tea, Tauros has other powerful and more reliable STAB options, namely Double-Edge and Return. The first has the obvious advantage of a higher Base Power, but the recoil combined with the damage from Life Orb can steadily reduce Tauros's staying power, which is quite good. Another option for the fourth moveslot is Substitute, which can help ease prediction, especially when your opponent has multiple checks to Tauros, and shield him from priority users and revenge killers. Lastly, Toxic allows Tauros to cripple many of its common switch-ins, such as Alomomola, Quagsire, Rhydon, and Regirock. The last two are damaged by Toxic the most because their standard sets don't include recovery moves. Unfortunately, giving up on any of Tauros's coverage moves will significantly expand his list of checks and counters.
Tauros, like many offensive Pokemon, really appreciates entry hazard support. One layer of Spikes is enough to secure 2HKOs on Steelix, Poliwrath, and Golurk, all of which resist Stealth Rock, with the appropriate move. On the other hand, Stealth Rock will suffice for Tauros to be able to obtain the OHKO on Escavalier and give Tauros a chance to 2HKO Qwilfish. Qwilfish has good defensive synergy with Tauros and can set up Spikes in the face of some of its counters. Roselia is also a good choice for this role, and it is particularly good at taking advantage of Alomomola. On more offensively inclined teams, you may prefer setting up hazards through a dedicated lead; notable examples of suicide leads are Smeargle, Crustle, and Omastar. Bulky Psychic-types such as Uxie and Mesprit can cover Tauros's weakness, are able to set up Stealth Rock, and are particularly troublesome for Fighting-type Choice Scarf users that threaten Tauros. Other countermeasures for Choice Scarf users include Druddigon and specially defensive Torterra, both of which fare well against the most common of them, Rotom-C, and can offer Stealth Rock support. Choice Scarf Medicham can work as a great teammate for Tauros, as it has good defensive synergy with him and can clean up the opponent's team after Tauros has weakened its counters. In addition, Medicham's access to Trick can come in handy in order to cripple counters, such as Spiritomb and Alomomola, with a Choice Scarf. When using this offensive core though, finding a way to get past Ghost-types becomes even more important.
Grass-types such as Sceptile, Lilligant, and Tangrowth get many switch-in opportunities against Alomomola and other bulky Water-types, and can also take care of the sturdy Rock-types that resist Tauros's STAB moves. Fearing a Scald burn, Rock Polish Torterra cannot switch into Alomomola directly, but nonetheless has particularly good offensive synergy with Tauros. Tauros can easily defeat Torterra's best counters, namely Tangrowth and Ferroseed, and appreciates its ability to get past Alomomola. Lastly, Fire-types such as Moltres and Emboar are good partners for Tauros, as they can take advantage of the bulky Ghost-types that wall him and put additional pressure on the Pokemon that Tauros is supposed to hit with Fire Blast.