If you are comparing
similar cartos, the thread size may be the only difference. It would be like Bloog making a regular and 510 carto, the insides would be the same. But that is only doing a back to back comparison on the same make.
A fictitious example, (like Squish mentioned about the same brand & resistance) ACME Cartos (low resistance) are offered in 510 and 808. You wanted the 808, but messed up and ordered the 510 and are stuck with them, the vendor won't exchange them. No prob, just use the handy adapter! And, no this has never happened to me, but what if?
I have used a few 510 items with the 808's... like a star dust under emergency circumstances (dead egos). There is another adapter for that, but I don't recommend it...looks really weird together and they drain 808 batteries quickly.
I haven't had any issues, I have even used the 1.2 ml firebird clearo on an 808 battery with that adapter.
