I will ultimately need a cast bullet to practice, and potentially hunt, as my stash of RWS 193gr bullets is limited and shared with a 9.3x72r double. This is a shame, as they are super easy to reload since they have a mid-bullet band that stands proud of the base. I've been able to expand the case mouths enough to accept the smaller base diameter and then press and tap the bullets home, finishing with a pass through the seater with the central plug removed to smooth things out. These worked consistently at 50 yards and shorter. I haven't tried them further out.

I also tried 2 loads with purchased swaged lead bullets.

The first were naked 0.361" 145gr LRN bullets from Buffalo Arms that I got for my Alex Henry single($24.59 for 50). They weren't great in the Henry beyond 50 yard (likely too small), so I tried them in the Watson. They performed well enough at 35yds so I tried further out. We don't have steel at 100yrds so I tried the 200yd plates and was pleased to hit them 50% of the time for 6 shots. I'm happy with that given I am finding elevation to be the big issue I'm having with the Watson's iron sights. Not blaming the gun - I just need to practice with that wide shallow V and tiny front bead. I have only 8 loaded rounds left using the 50 bullets I bought and I won't replace them as I had much better luck with paper patched 0.358" 170gr LRN bullets from Bear Creek Supply. I bought a box of 500 of those for $50. They are terrible unpatched in the Watson and AH, but great patched in the Watson. I'll try them next in the AH. I'm hopeful about using these patched in all 3 of my 360EX rifles (there's also a GE Lewis hammer gun from the 1870s) after I get the Watson ready for next month's hunt. Bear Creek also offers a 180gr option at .358 and say they have a .361" 200gr coming soon, which sounds even better.

The patched bullets still reflect my newbie status as a patcher, but I'm getting better. Overall I need smaller finished bullet diameters, so I'll need shorter patches, and I have to make them stop further from the nose of the bullet as none of these rifles have long leades and I had some trouble closing the action on some rounds unless I peeled off some patch material.

It was a pleasant surprise that even rounds where the patch was cut off above the case neck by their final die pass performed OK. For patching paper I used gas station credit card receipt paper from refueling on our summer road trip. I will also try 9lb onion skin from Buffalo Arms.

So I'm planning on hunting next month with the jacketed flat nose RWS bullets, but I'll be exploring ways to make the 170gr LRN Bear Creek Supply bullets work via patching for use going forward.

All that said, I am very grateful for the advice on moulds above. So far, I have only tried casting for my 300 Sherwood and that worked fine. I may explore that further for these 360 rifles.

Pictures below -- first target shows the first pair of 170gr LRN patched 0.358" bullets at 35yds. The second shows the longer rifle range with a zoom to the 200yd plates.