It took me so long to learn that:

Firing takes place
when the recoiling groups
are between .020 to .116
out of battery to prevent
contact between the front
end of the barrel extension
and the trunnion block

Verbatim.

But I did it, and so can you.
Why not?

It took me so long to learn:

The distance between
the face of the bolt
and the base of the cartridge
when fully seated in the chamber

Verbatim.

But I did it, and so can you.
Why not?

Plunging, direct,
enfilade, traversing,
elevating,
elevating and traversing,
swinging traverse, free gun, bipods,
tripods,
useless weight which
spits the ending of living stories
and breathing saints