Crosman Breech Attempt--DOA

Update. 
 
Well, it was bound to happen sooner or later--abject project failure.  The breech hit the recycling bin a few minutes ago.  I found it impossible to use the small drill press and keep the bit on center when drilling for the barrel.   There's no current plan to make a second attempt.  Sorry 'bout that.  I was really looking forward to this one.  I'll have to regroup and come up with another project.