JB101

Those that I have seen are very (or can be) very accurate rifles.

The bullet is 'it' with all BP (ML & BPCR) rifles. Pure lead or pretty soft alloy (say 30:1 lead/tin) Get the right mold and pretty much straight from the mold - after lubing.

Over powder wad either from gasket material or HDPE .060" thick is a good start.

Pick a starting point re. powder and work up - Swiss powders are very good their version of 2F (#3) wqould be my suggestion

Here is a link to some similar work on same cal. http://blog.davide-pedersoli.com/dev...i-gibbs-rifle/

T