Raimey,
Thank you for the link.
That gave me some dimensions to work with in addition to the bullet weight.
I should be able to work out the projectile from that.
The gun will regulate for a specific charge, so I should be able to find it now that we have a bullet weight and geometry
That leaves me with powder charge ----- Unless someone knows the charge of BP or a velocity, I am just going to have to start light and work up.
The case volume will be a bit under the 50/90, and 90 gr was for an old balloon head case. Any thoughts on how to decide when we have gone far enough if the gun does not find something it likes with a 410 gr bullet.
Brass - I turned a case head from a hunk of brass - rim thickness is 0.050" - So 50/90 will require some rim thinning and length trimming. Both well within the capabilities of my tool kit.
32 Ga magtech is another option. The head is weaker, but its probably closer to the original case volume. I need to check the rim thickness and base diameter. It might be too big at the base.
500 nitro - correct rim thickness, in theory, but head diameter is a fuzz to large according to my references.
Thank you for the assistance
