tanoose, yes you can shoot "Real" powder in the NEF, H&R and B/C.
You'll have to use a blow tube or wipe between shots to maintain the soft fouling needed for accuracy.
If you just want to try it out for fun, try a 500 grain bullet 20:1 or 30:1 alloy sized to .459 using SPG lube in the grooves AND on the bore-ride section. Use enough Goex or Swiss 1 1/2 or 2 f to fill the case so you will get about .1 to .2 compression when the slug is seated. Re: neck tension, .001 to .002 is plenty; no crimp, just size enough to remove the mouth bell.
If you're using the Lee 500 "Postell" style, load to an overall length of 2.87 in the NEF. A Paul Jones Creedmore 535 should be seated to 2.88. This will seat your slug .030 off the lands for starters.
Try Sagebrush for bullets if you don't want to cast your own:
http://sagebrushproducts.com/
Everything he said is true
BUT Do Not use your bullet to compress you black powder with. If you do not have a compression plug as offered by
www.buffaloarms.com get a peice of wooden dowling that just fits the dia of your case. Lay your bullet side by side to the wooden dowling and mark where your last driving band just befor the nose of the bullet. Then mark to where you will be seating your bullet depth to. Cut your wooden dowl approx 1" above the mark.
Then the next process is simple.... place your cartridge with BP in it, in your shell holder. Slide the wooden dowling up inside the bullet seating die, then center to your filled case. Slowly run this up inside the die, checking so often to see that your powder is compressing to the proper line on your dowling. Do Not worry about what some call crushing the black powder. Black Powders like Goex needs to be compressed.......
On my website you will find a good write up by Chuck Rathel, you can now look at this without using ADOBE reader, and you can print this off. It is very good information in there.
I will check back from time to time to see how your doing
Watch out because shooting with black powder can be very adictive :twisted: