So just started shooting my Marlin 38-55
Had this thing for many moons and never shot it.
I had ammo for it that was loaded also many moons ago by the guy I got the rifle from.
First outing was horrible, at 50yds the accuracy was about 2' group's, "Really"
Out of 11 rounds only 3 hit the 2'X3' cardboard
Also Lots of unburned powder left in the bore and case.
Pulled a boolit and checked size, it was only .373 -.374
I pressed it nose first into the bore all the way in with my thumb
Needless to say I have pulled all that ammo down, the cases were new never fired.
Today I shot some ammo loaded with boolits measuring .379
This thing is very accurate.
Only issue is there are still unburned powder kernels in the bore and if you look at the 100yd traget the boolits seem to be starting to tip
Winchester short cases
265FN
18.5gr. 5744
Fed 210 primer.