I've done extensive testing with a Hone Claws set now and I have found it completely deadly. You switch into something that has to switch out, Hone Claws on the switch and proceed to wreak havoc with +1 everything. 6-0 all over the place!
I just wanted to echo the sentiment that Hone Claws Aerodactyl is pretty powerful. Though it's not the most amazing of battles, here is one showcasing MegaDactyl getting to +1 and proceeding to sweep 5 Pokemon (
http://replay.pokemonshowdown.com/oususpecttest-84793762).
The set I'd recommend for Hone Claws is this:
Aerodactyl @ Aerodactylite
Ability: Pressure / Unnerve
EV Spread: 18 HP, 252 Attack, 240 Speed
Nature: Adamant
+Stone Edge
+Ice Fang
+Fire Fang / Aerial Ace / Earthquake / Aqua Tail / Crunch
+Hone Claws
The given spread allows you to outpace base 130 Pokemon with a +speed nature (namely Jolteon, other Aerodactyl at base, and Crobat), but you can take out those speed EVs and plug them into HP if you don't care about outpacing those Pokemon. However, pre-Mega Evolution, the given EVs are to allow you to still outspeed Tornadus-I and Thundurus-I if necessary.
If you want to outpace base 125s only, you can use 184 Speed EVs, 172 if your worst fear is Greninja. Though these EV calculations are all post Mega Evolution, so be wary about how you manage your spread.
Your goal is to force something out, set up, and sweep. MegaDactyl is fairly good on bulk, and its' typing allows it to resist both of Talonflame's STABs, as well as Staraptor, and even Mega Pinsir. With the given IVs, you naturally outpace opponents like Latias and Latios, so you can go ahead and go to town on things.
Stone Edge is mandatory and it becomes very reliable after a Hone Claws boost.
+1 252+ Atk Mega Aerodactyl Stone Edge vs. 252 HP / 0 Def Rotom-W: 261-307 (85.8 - 100.9%) -- 87.5% chance to OHKO after Stealth Rock
Ice Fang is there because you don't want Landorus-T or Gliscor to ruin your day, and it allows MegaDactyl to revenge dragon/flying or dragon/ground types.
Though if it's Zygarde, get some prior damage in.
252+ Atk Tough Claws Mega Aerodactyl Ice Fang vs. 252 HP / 0 Def Zygarde: 360-424 (85.7 - 100.9%) -- 43.8% chance to OHKO after Stealth Rock
Your choice of coverage move is dependent on what you want to hit. Aerodactyl has so many possible options that it can take out a wide range of foes depending on what you need to KO.
Crunch can leave a severe dent in just about anything with a Tough Claws boost, and it gives you a stronger option against things like Metagross, Bronzong, Jirachi, and ghost types, but I feel these are generally uncommon, but worth the mention. Fire Fang lets you wreck Scizor (beware Bullet Punch), Ferrothorn, Forretress and other steel types, and it has a respectable ~85 BP.
Crunch hits the Latii twins harder, so if you need a way around your opponent's defogger (assuming they aren't using Scizor or Mandibuzz or something to Defog with), Crunch can seal the deal.
252+ Atk Tough Claws Mega Aerodactyl Crunch vs. 4 HP / 0 Def Latios: 308-364 (101.9 - 120.5%) -- guaranteed OHKO
Aerial Ace hits ~119 BP after STAB and Tough Claws are factored in, making it a fairly decent move (equivalent to an 80 BP flying move with STAB).
252+ Atk Tough Claws Mega Aerodactyl Aerial Ace vs. 252 HP / 0 Def Conkeldurr: 302-356 (72.9 - 85.9%) -- guaranteed 2HKO
4+ Atk Conkeldurr Mach Punch vs. 4 HP / 0 Def Mega Aerodactyl: 73-87 (24.1 - 28.8%) -- 97.9% chance to 4HKO
Deal some prior damage and you can kiss Conkeldurr good bye. That or snag a Hone Claws boost and just one shot it. As a side note, Fly one shots Conkeldurr without a Hone Claws boost.
252+ Atk Tough Claws Mega Aerodactyl Aerial Ace vs. 252 HP / 0 Def Mega Venusaur: 242-288 (66.4 - 79.1%) -- guaranteed 2HKO
252+ Atk Tough Claws Mega Aerodactyl Aerial Ace vs. 252 HP / 252+ Def Mega Venusaur: 182-216 (50 - 59.3%) -- guaranteed 2HKO
Earthquake lets you bypass King's Shield on Aegislash, though in general you don't want to stay in on Aegislash. It also helps you murder Heatran which is always nice, and being able to hit grounded electric types hard is great. If you run Jolly, you can outspeed Mega Manectric and EQ it, but if you're intimidated it probably won't KO, it's not really a favorable match up. Perhaps the most important reason to run Earthquake is that it can OHKO Mega Mawile at +1. It's also a stronger option than Fire Fang against M. Mawile.
Aqua Tail lets you hit a variety of things hard, and it has good power after Tough Claws, and after a Hone Claws, can OHKO some Tyranitar (but not Mega Tyranitar).
+1 252+ Atk Tough Claws Mega Aerodactyl Aqua Tail vs. 252 HP / 0 Def Tyranitar: 398-470 (98.5 - 116.3%) -- guaranteed OHKO after Stealth Rock
It's also one of the only ways around Terrakion.
252+ Atk Tough Claws Mega Aerodactyl Aqua Tail vs. 4 HP / 0 Def Terrakion: 316-372 (97.5 - 114.8%) -- guaranteed OHKO after Stealth Rock
It even provides a chance to defeat Mamoswine one on one after Stealth Rocks.
252+ Atk Tough Claws Mega Aerodactyl Aqua Tail vs. 252 HP / 0 Def Mamoswine: 348-410 (82 - 96.6%) -- 62.5% chance to OHKO after Stealth Rock
Just FYI for the Mamoswine match-up...
252+ Atk Mamoswine Ice Shard vs. 4 HP / 0 Def Mega Aerodactyl: 168-198 (55.6 - 65.5%) -- guaranteed 2HKO
252+ Atk Mamoswine Ice Shard vs. 22 HP / 0 Def Mega Aerodactyl: 168-198 (54.9 - 64.7%) -- guaranteed 2HKO
Icicle Shard will OHKO you every time but you outspeed, so if you're packing Aqua Tail, you've always got that chance to KO it first.
So what can MAerodactyl set up on? What does he force out? Well, like Talonflame, Merodactyl can threaten many fast but frail threats. A lot of people don't know what Mega Aerodactyl will have, so you can use it to take out choice targets. It can easily handle Landorus, but Landorus-T needs some prior damage to ensure the KO if you're intimidated. However you have a clean OHKO without intimidate. (
252+ Atk Tough Claws Mega Aerodactyl Ice Fang vs. 252 HP / 0 Def Landorus-T: 456-540 (119.3 - 141.3%) -- guaranteed OHKO)
His Rock STAB lets him scare away Charizard formes, and people tend to be stuck in the mentality that Aerodactyl always carries Earthquake, so you can bluff it on things like Heatran and get a +1 on their switch (or just some prior damage on things, but Megadactyl doesn't wall break well). Almost no Dragon wants to deal with MegaDactyl, and anything that's not a dedicated wall is basically a possible target, depending on your moveset.
Megadactyl's (or at least, this set's) main weakness are tough dedicated walls. Skarmory can definitely handle MegaDactyl's hits for example:
+1 252+ Atk Tough Claws Mega Aerodactyl Fire Fang vs. 252 HP / 232+ Def Skarmory: 180-214 (53.8 - 64%) -- guaranteed 2HKO after Stealth Rock and Leftovers recovery
So unless a wall is 4x weak to one of your moves, or you somehow boosted to +4, you need to have dealt some prior damage.