This to me would indicate that although Doc White, being a pioneer somewhat himself in the field of muzzleloading rifles still thinks muzzleloading rifles are a fantastic way to hunt anywhere for anything. I could not agree more with the doctor. From his statements concerning smokeless powder he indicates to me, that he is not convinced it is safe for the average hunter (such as myself). or general use in the field. Also in his conclusion, although he applauds the way smokeless powder performed in Africa, he seems to express that it made him very nervous to be hunting with smokeless powder. Or perhaps I am misreading his comments from his site. And as I said before, I never read his book.
So if a black powder expert such as Doc White still gets nervous by the use of smokeless powder and also does not endorse the use of it for the average hunter yet. I will stick with the conventional methods shooting Goex or Pyrodex P, even Triple Se7en with it's sometimes nasty crud ring.. and leave the smokeless powder shooting to the experts.
As long as you are reading Doc's site, you might as well read all of it:
http://www.whitemuzzleloading.com/pr02.htm
PS- By the way, if you are shooting modest loads of smokeless in your T-Bolt ( it seems to be fairly common), the weak 209 primer rule is not necessarily true. Some smokeless powders are very hard to ignite and need all the power they can get. The high bulk slow burning powders are worst in this regard. I have tried some Accurate Arms 8700, a slow burning ball powder, and it needs a regular trap and skeet primer. Like pellets, it also needs the back pressure that only a tighter fitting sabot can provide. It appears that as long as you stick to less than 1500 fps velocities with my big bullets, and use medium burning powders, adjusting the breechplug so the rim of the 209 is tightly pinched by the bolt to minimize blowback, you will enjoy residue free shooting. The Accurate arms manual has some excellent information on obsolete large caliber loads that can serve as a guide. Just keep in mind that you will violate the guarantee on the rifle if you use smokeless. For the time being, the prohibition against using smokeless in White rifles remains in place (for liability reasons), so you are on your own.
Good Hunting
DOC
I'd not call Doc an "advocate," nor is he opposed either. He is a man with an inquisitive mind, and enjoys smokeless muzzleloading, inlines, sabots, conicals, and flinters. He advocates none; he embraces all.