My own model 14 is a 35, so I can't help much with 30 Rem experience.
But I agree with Mauser use 30-30 data at starting loads. I have used the Speer 130 and old Sierra 125 hps on a number of deer in light recoiling loads thru the years. Both good bullets.
As for the leupy if it's working leave it alone. If you do choose to return, you could look at a reticule change. I like wide bold reticules for close range guns. The German no1 is a favorite!!
CW