I'm no expert here but my gut feeling says a bit more powder in the 155 may be worth it.
But Just for the record: I have uncanny success in 30 cal with Red Dot and Unique so much so I recently purchased American Select...which is dead middle of those two.
Don't get me wrong winchester powders are great and my shelf is full of them but for plain base loads in rifles I just like the large flakes! I think one of the great minds here likened it to "a leaf blower effect " when the primer goes off
Jim
JW....I too am going to go with my gut feeling.
A softer lube might help, CR is awfully hard and may cling
a bit.
Of course my suggestion would be Ben's Red or 50/50 or still yet a couple of coats of BLL.