45/70 guide gun loads?

[Da stump]

Hi, It seems that Teacherman has a new toy.  A 45/70 guide gun.  It somehow has become my task to reload some rounds for him so i'm wondering if anyone has reloaded for the 405 grain SP bullets by Remington.  This will be a Bear gun used both in Washington and Alaska.  Possibly even Canada.  If possible I would like to use Reloader 19.  I use a lot of it and pays to be able to buy in Quantity.  But let me know what you use and what really works well.  Don't worry about Teachermans shoulder, it might give him humility.

[TeacherMan]

Just keeping your retirement busy,  I've been looking around for loads that you could load up. I don't think reloader 19 will work but reloader 7 would. Hodgson and IMR seemed more common. From what I have found so fair I think I'm leaning toward the 405 gr. FNSP Kodiak. This is what I'm looking at;

Load 10203 in caliber .45-70 Government

LoadID 10203
Bullet Kodiak FNSP
BulletWeight 405 grs
Powder Hodgdon H322
PowderWeight 52 grs
Primer Winchester LR
Brass Make Starline
Barrel Length 18 (inches)
C.O.L 2.55 (inches)
Velocity 1900 fps
Group 1 (inches by 3 shot at 100 yds)
Submitted Date 4/8/2005 1:33:00 AM
Submitted By Josh Sorensen
Gun Info  Marlin guide gun
Comment Bear load, the Kodiak bonded is a really tough bullet
   
Energy 3240 ft-lbs 
TKO 50.35 
OGW 1688 lbs 
IPSC PF  769.5

http://www.reloadersnest.com/detail.asp?CaliberID=91&BulletWeight=405&LoadID=10203


What do you guys think? I want something that will stop a tank, or better yet a large grizzly or brown bear.