Remington No 1 Creedmoor

[bruce moulds]

getting a little bit off track, but related.
the first creedmoor ammo was the 44/77 case loaded with 90 gns of powder.
can anyone tell me how much swiss powder can be droptubed into a 44/77 case such that it has room for a 0.060 wad as well?
if it is high 80s amount of powder, this might turn out to be surprisingly effective at long range.
with the powder compressed 0.1" such charges would be doable with a pp bullet.
the case would also allow a deeper seated bullet with a grease wad for closer ranges and less recoil.
please humour an old man.
keep safe,
bruce.