Sounds interesting - keep us posted.
I've got a single shot 9mm Bergara (18 inch barrel with a 1 in 10 twist). I've been focussing on 147gn loads. It's a hard thing to get to shoot accurate reliably. It will typically do 2.5MOA at both 50 and 100yards. I've only shot 2 groups at 200yards and it did 2.25MOA. I have shot 1MOA groups with it at 50 and 100 but it's not he norm. I'm currently playing around with different length muzzle brakes and adjustable weights, using them as stabilisers. I've just bought a Limbsaver X-ring barrel dampener and tried it out today with the brakes. It does make a difference but there's still a ton of experimentation to do. With such a small case capacity I think the barrel stabilisers are still needed in addition to load development, but I tend to just buy off the shelf 147gn Winchester BEB because I find it hard to find the time to reload and this factory ammo shoots very good anyway.
