We have a lot in common. However, my favorite rifle is my sporterized m1917...... That's a beautiful rifle buddy... Hey, speaking of 180 gr. powerpoints. My rifles love those things. Here's the load I use in my model 70's:
I'll bet your rifle would like this exact load. OAL would probably be just about spot on too. Let us know how she does with those 180 gr. Winchesters...