You might just have to burn a few different commercial boxes to get started. I know it is not ideal, but at least you may discover a commercial load your piece likes a lot in the process. I did this with my 22 Hornet, and hands-down the Winchester White Box 46gr HP were amazing, trouble with that is I could never get hold of the bullets to try and replicate it in handloads.
Good luck.
I would buy an H&R chambered for 327 Fed in a heartbeat, being able to shoot 4 different loads in a rifle would be great.