I have a decent Webley Mark I. it dates to 1889. It has been converted to .45 ACP w/ clips. The bore is mint as well as the chambers. I use 200 gr .452" bullets with 3.5 gr Bullseye. I slugged the barrel and chamber throats. Both are .4515"/ The usual is .455" bore and .450" throats. They used a hollow base bullet in the old service loadings. At 25 yards off the sandbags it will shoot 2" to 2,5" with 6 shots.
Doug
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