This was my first build from scratch, which I did by following Bill Raby's original 4-bore video series. Previously my experience was building a couple of guns from kits - a Pedersoli Harper's Ferry pistol, and the Sitting Fox 4-gauge blunderbuss. I ordered the barrel almost immediately after Bill started publishing the series, but it wasn't until just recently that I made a push to finish the rifle. My goal was simply to build a functional and ergonomic gun.
Notable differences from reference:
- Longer barrel - 33" vs 29"
- No advanced carving or finishing work
- No entry pipe, mostly because I didn't feel like fabricating one.
- Somewhat more drop, 2-3/4"
- Uses a pre-cast trigger guard
- Temporarily equipped with a delrin rammer - I eventually want to find a dark wood that's cheaper than ebony for this
The finished rifle comes in just a hair under 20 lbs, which is about the limit of what I can shoulder. I did a few test shots in the back yard with 300 grains of Fg under a .975 caliber ball. The fit is good (easily loaded with thumb pressure into the .981 bore) using a very thin (.007) patch, but gets noticeably tight after a shot or two. I'm leaning toward getting a smaller mould so that I can use a .015 patch. Recoil is not bad, and is much easier to handle than the blunderbuss despite a 50% heavier charge. It feels less likely to bruise your shoulder than a .30-cal nitro rifle, but has noticeably more 'shove' and muzzle rise. That said, 300 grains is probably not enough for good ballistic performance. I'll need to do some chronographing at the range to figure out what's best.
As you can imagine, the real challenges with this is accommodating the over-sized nature of the barrel. The lock wouldn't fit without removing metal, and long 10-32 screws are nearly impossible to find (the tang bolt is actually two screws welded end-to-end). The selection of off-the-shelf thimbles in 1/2" is extremely limited, and the barrel rib is disproportionally narrow. I also have no idea how to correctly clean the chambered breech, which has a 90 degree .7" deep vent (ideas on this would be welcome).
Overall, I'm very happy with how the rifle turned out. It's a good testament to the quality of Bill's build videos when even a novice like me can make something workable. I would highly recommend!