3400 is doable with a 28" or longer barrel so you should be able to get close or in the 3350 ball park at least. I stopped at 3150 in a 24" barrel as accuracy was good and I was at book max and no need to push it harder.

"When you disarm the people, you commence to offend them and show that you distrust them either through cowardice or lack of confidence, and both of these opinions generate hatred." Niccolo Machiavelli