475Guy

I think that's why I have stayed away from shooting Black Powder doble rifles
(although I do buy them if I like them).

I have probably done load development on about 20 - 30 or so Nitro Doubles
across 15 or so calibres and even that can get a bit weary although after the first couple
I found it easy now to get a rifle shooting within about 10 shots.

500 Nitro