Years ago most reloading presses came with 2 primer seating stems for reloading both round and flat primers. Haven't seen any of the round primers in years.

I can't imagine your seating die not having enough adjustment to seat the bullets lower. With the seating die bottomed out on the shell holder, there should be enough adjustment in the stating stem to almost push the bullets all the way into the case. Sometimes hollow points will feed better if they are seated just a tad deeper than regular RN bullets.