OK, Just for grins I had to give this a try.
I happened to be in the shop today working on other stuff and I grabbed 5 fired hornet cases,
I deprimed with a punch to leave the cases unsized.
I reprimed with a Winchester SRP
I hand lubed a Herters 43.5 grain copy of the Lyman 225438 and left the GC off - unnsized about 0.226"
Hand seated it into the mouth of the case - friction fit and left it long.
Loaded the round into the 20" barreled rifle. Closing the action seated the bullet.
-Keep in mind this big test is a little short on data points
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Shot the round at a scrap of wood (fur) at about two feet. Nothing.
The rifle's action made more noise than the primer.
That told me the bullet did not exit the barrel - Yup - I got a rod and pushed it out - it made a measured 2.5" up the tube.
SO, I made and second round but this time added exactly one grain of 3F Black
Well -This time I went outside - smart huh?
That round took the small block of wood off the trash can and 20 feet into the back yard.
I'll have to try a pellet next.