45-70 chambering problem

[Jmaddox7]

Good evening folks,

Im a new 45-70 reloader and am having a problem with the round chambering the last little bit in my Henry. New starline brass with HDY 350 RN's, sized, trimmed and seated to spec. I used a Lee Factory Crimp Die after seating. Problem is that it wont chamber all the way, the lever and bolt wont close. Seems like it needs a taper crimp?

Please help, what am I doing wrong?

Thanks!

--jm