I think what he's saying is he already has an accurate load, and he wants to know if he can get in the ballpark of that velocity with pellets.

Two pellets should be just a tad hot of what 80gr loose puts out (85gr equivalent for the pellets). In most guns I would not think this would put you out of the accuracy zone but there is no way to know but to try it.

If you want to have a better idea before spending the money on the pellets, shoot a couple groups with 85gr loose.