I have 100 grain,115 and 117 grain bullet molds.
Looking for starting points on these heavier bullets
in my Hoch action, 11 twist Douglass barrel rifle.
Looks like as cast, they will fit nicely seated to first gg 
from base. Later looking at fully breech seating them.
Thanks
beltfed/arnie

My direction was different than yours, light cast bullet loads for Lever Silhouette but,

Looked at a lot of manuals, old mostly, 4227 is the most often recommended powder. Off the Internet and at our club matches Lever Silhouette 25/20 shooters also prefer 4227. Have plenty of it, use it in my 32/40 and 38/55 & it measures well, no reason for me to look for another.

My rifle, Marlin 1994 using a 85 gr cast bullet have settled on 6.5 Grs 4227 & a small rifle primer.  It's the bottom edge of loading, sometimes get unburned grains. I may bump the load up to 7 Grs after next months match. Will have to re-establish zeros, reason for waiting.

Lot of people recommend 9 grs of 4227 but it's going to produce high velocity's and could cause trouble with Cast bullets depending on your bullet's size and temper.  This my speculation no experience with 9 grs. Jacketed bullets 9 is probably the way to go.

I would recommend if shooting fixed pay attention to sizing. Factory dies oversize and are the reason so many people loose 25/20 cases to splits.  CH4D modified a ring neck sizer die for me & it takes the necks down just right without overworking the brass.

Boats

Yes but, guy that posted most of it recommends o/p wads. Few on this forum would agree

Boats