I have one of the NEF 500 S&W HandiRifles on order. I was researching loads on the Internet. Lots of great info on graybeardoutdoors.com. Basically, it looks like the published loads (for the 10" handgun) are pushing 4200 ft*lbs 
This is 375H&H territory, out of a 6 3/4 lb rifle.
I can't wait
This is 375H&H territory, out of a 6 3/4 lb rifle.
I can't wait