Russel,
The pics worked just fine. Thanks!
If you compare your pictures to the one I posted (w/ pheasants) you can see that the locks are different though both are back action. More importantly the cocking mechanism is different. The earlier back action like I pictured had the cocking rods w/ hooks that come up through the action flat. I imagined that fitting a workable ejector mechanism to that action would be difficult and it is likely why your rifle has different locks.
I'll try to get some pictures of what I so poorly described posted over the weekend.
Thanks again.
