Originally Posted by Gofre
Unfortunately unless you go 252HP/252Def, an Adamant 252Att Swampert always stands a chance of OHKOing a Modest Tentacruel. Conversely not even a max SpAtt, Modest Tentacruel with a Life Orb can OHKO a 252HP Swampert with Giga Drain.
With this in mind, I'd suggest 36HP/252Def/220SpAtt@Modest with an Expert Belt. The EVs guarantee an OHKO on a 248HP Scizor with HP Fire while providing the maximum physical bulk that the EVs will allow. Notably it guarantees survival of a 5 hit Rock Blast from an Adamant +2 Cloyster, doing a maximum of 95%. The rest of your 2HKOs remain intact from what I can gather.
Thanks. I did just figure that out about standard Swampert myself. I'll do your spread, and post back here with results.
And thanks for the help you have been giving me on this. I know for a fact this can be legitimately good, and (insert noteworthy compettive forum here) analysis worthy at some point. I just need to get the smalls kinks out of the way. Wish I could do something more than just say thanks for the help you have given.
I am guessing you have a (insert noteworthy compettive forum here...again) account somewhere. Maybe we can both present this?