Considering all official sources (bar one) that have commented on it such as the Daizenshuu cite it as their power and even full power at the time, definitely not.
Daizenshuu 7
Piccolo: 408
"Unfastening his training equipment, he stands ready to fight at full power. The Makankōsappō that he fires from his fingertips has a power equivalent to 1,330."
Out of universe, it's most likely Toriyama wasn't thinking too deeply about the battle power system (as though he ever did) to factor in things such as resting Ki. In-universe, it's most likely resting Ki didn't become something the fighters possessed until after their training for the Saiyans to further enhance their Ki, considering Kuririn didn't charge up his Ki when standing around for Bulma to rate him or made any argument against a 322 power being capable of killing him and Roshi.
The only conflicting evidence is the Shonen Jump entry rating 23rd TB Goku at 910 without any specification on it referring to just the power of his Super Kamehameha, though considering how entries from that source can be, I'd say it doesn't hold much weight compared to the Daizenshuu entry that backs up what the manga presents to us.