The shoot went well, on Sunday, but it had a bit of trouble with poor ignition a couple of times. The rounds were stored upside down and there is a little more than half a case of AR 2207 ( IMR 4227 ) behind the PB 310g wheel weight alloy bullet.
The targets we were shooting at were charging elephant, three of them set one each at 75,50 & 25yds. You had to fire 6 shots in 35 seconds placing two in each target, starting with the 75yd one.
One shot was delayed a half a second and missed the target altogether, the other one failed to fire and stuck the bullet about 2" up in the bore.
I dismantled the rifle and got the stuck bullet out quickly and the Range Officer kindly let me shoot the match again. On my own, with about 20 witnesses. :-(
I stood the rounds upright on the bench and loaded them with the rifle pointed at the sky. They worked this time and I got the required six shots off in 32 seconds, scoring a 9, an 8 and a 9.
I'm waiting on some pure wool wads to arrive and will be using them in the next loads. I have tried a slower powder ( to get more in the case ) but it doesn't burn properly, leaving lots of debris.
I had to fit a lower front sight to the rifle, as it was shooting about a foot low at 50m.

This one is brass, with a 45deg forward sloping face, to catch the light and is 2.5mm lower than the original.
The barrel was made by Sprinter Arms in South Australia and is CrMo, .410 groove dia, with a 16" twist, 24" long.
The butt stock design is going to be very simple and just copy the old one with a good Pachmayer old English pad. The forearm will be fairly slim and short, in keeping with the period. Oil finished with some nice subdued checkering. All metal work will be Rust blued and I plan on getting some simple engraving done on it as well.

Cheers,
Afro