Mac, is your dinosaur load safe for N-Frames?
I have fired a considerable number of my hot loads through various vintages of N Frames, and all have done well. That being said, I try to restrict the heavy loads to my Redhawks.
My N Frames pretty much live on a steady diet of my "working load" (10 grains Unique with a 240 SWC).
If I was shooting all my .44s through N Frames, I personally would back off to 19.5-20.5 grains of H110 (letting the gun decide what it likes best).
It has been my experience that once you get past a certain velocity threshold (say 1200-1250 FPS) you really don't gain anything, when it comes to actual terminal performance. All you do is add recoil, which in turn decreases personal performance through decreased accuracy.
The punchline is that I would run 19.5-20.5 grains of H110 with your 300s when you want to go heavy in an N Frame.Cheers!
