Shot 12 double ought buckshot in 1887.
That's 624 grains worth. Used short
2.45 inch case that feeds from magazine.
Used fast ball powder, getting about
1500 fps. Further testing on 600 gr
hardened slug got 1700.That is in short
20 in barrel. Comparing this short case
with the 3.07 inch case I use in NEF there
is an inch difference in length of powder
column so it takes faster powder with
10k more pressure in 87 to get same velocities as in NEF. But the 1887 handles it fine.
It takes as much pressure as my Savage
in its present form.Ed