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Hi,I shoot a Ferguson a lot and have built 3. All mine are the historically correct caliber 0.65". I have no idea how your rifling will work compared with mine but I have no need to use a ball the same size as the bore. I have used several combinations. A 0.648" ball worked fine but did not allow much powder behind it in the chamber.. I settled on 0.626" balls and these shoot very accurately out to 100 yards (the furthest I've used it) and I can get a bit more powder behind it. The original guns were meant to shoot 0.615" ball which was standard British carbine ammunition. I have very poor accuracy using that sized ball. I have no idea why anyone would build a Ferguson action in 0.80" caliber. I hope he did a good job on the threads of the screw plug so they seal and can take that a 160 grain load or you are going to get a face blast of hot air. Even with the historically accurate TRS action I get a little puff on my face. FYI, the originals used 0.615" balls and about 70 grains of double strength superfine powder similar to our Swiss 3F. I suspect you are going to have real fouling problems because of the blast and using 2F powder. dave
Hi,
I shoot a Ferguson a lot and have built 3. All mine are the historically correct caliber 0.65". I have no idea how your rifling will work compared with mine but I have no need to use a ball the same size as the bore. I have used several combinations. A 0.648" ball worked fine but did not allow much powder behind it in the chamber.. I settled on 0.626" balls and these shoot very accurately out to 100 yards (the furthest I've used it) and I can get a bit more powder behind it. The original guns were meant to shoot 0.615" ball which was standard British carbine ammunition. I have very poor accuracy using that sized ball. I have no idea why anyone would build a Ferguson action in 0.80" caliber. I hope he did a good job on the threads of the screw plug so they seal and can take that a 160 grain load or you are going to get a face blast of hot air. Even with the historically accurate TRS action I get a little puff on my face. FYI, the originals used 0.615" balls and about 70 grains of double strength superfine powder similar to our Swiss 3F. I suspect you are going to have real fouling problems because of the blast and using 2F powder.
dave
