Somehow I didn't notice all these replies.
The rifle is for walking trail shoots, I hunt with a bow here. So boring it out isn't really a step in the right direction. Although a 54 definitely gets the targets swinging better.
I had my first range day with it in a while and some changes seemed to have helped.
First off I got some very tight weave cotton that mic'd at 0.011"
Second thing was getting a new nipple.
Third I ran just a little bit of green scrubby down near the breach end which seemed to make an improvement when I put the camera down after.
Last thing was going back to a basic water and soap lube which I kept the patches moist but not dripping with.
Straight off no hammer bounce, much easier loading but still took a shove which remained consistent for +20 shots. Clover leafs at 25yds.
At the suggestion of a range mate I went up into the 60gr area and things tightened up still. Went to 50yds and rang steel nonstop offhand.
I think 90% of that improvement was the nipple. Apparently when the get bad enough to bounce the hammer with even light loads it can also lead to fouling. The new nipple has such a small bore that capping it off won't blow a patch out.
-Grant