Questionable reduced loads with slow rifle powder. Should I be concerned?

[jarmann]

buen giorno
I load 26 gn n110 on a 168 gn privi fmj bullet for the 30/06 1903a3 smith corona velocity 636 m/sec gives same results as sr4759 powder with same bullet
a other few examples
us krag 18 gn n110 HN ( haenel en natterman) .308 copper plated high speed 180 gn bullet best groups at 100 m
in danish krag 1889 17 gn n110 .323 190 gn HN bullet also with 17 gn N340 same bullet same results at 100m cases made from 45/90 starlight
winchester musket 1873 n340 7gn on 200 gn leadbullet (shoots like a .22 rifle) nice groups at 100 m
a la prossima volta
greetings from the same site of the pond but a little more to the north/west
jarmann