I've used 11-52 on a 25 1/2" scale guitar tuned to drop C with good results.
The longer scale length helps.
For drop A and drop B maybe go to 12 - 56 with an unwound G.
Be aware that as you go up in string gauge, you will run into a host of set-up issues with intonation, neck relief and nut slotting.
If you aren't comfortable dealing with this, then best to work with a Luthier to get the guitar dialed in at the tuning you want.
It's also not uncommon to have issues with the bridge not being able to intonate the 50+ gauge strings in the low drop tunings.
Personally, I gave up on low drop tunings on a standard guitar, and bought a 26 1/2 scale length axe designed for this.
Works much better, and the 26 1/2" scale length still feels good.
Hopefully some other guys here have had success with this, and will chime in with tips / suggestions.