Rick,
Looks like it's getting close for sure.
You might work with different thickness of patch materials and lubes. It makes a lot of difference. especially for the flat bottom grooved barrels. I find the round bottom grooved barrels are a little more forgiving what you use for patch thickness. I been reading some are using Teflon coated patches at friendship and setting records using them. A friend send me some precut Teflon coated patches to try that look like Twill fabric with a green Teflon coating on it and a bottle of liquid to use to moisten the patch with. It's a little to thick for my rifles and I need to palm the ball starter pretty hard to get it started but the accuracy is good.
I have 100% .013" Twill and Trill fabric I like better then pillow ticking. The Twill is a little softer but very tough that holds up good from getting blown patches.
I like using straight Vaseline on my patches I use in my reproduction flint that J. Henry was building for trade with the American Fur Company around 1831. This .54 has a Rice round bottom grooved 44" barrel that likes the .013" thick Twill patch with the Vaseline lube. I cut 2" wide strips and take a putty knife and spread the Vaseline on thin on one side and scrape most off with the knife then roll it up for loading. This lets me shoot a 25 or 30 round match with out having to clean the barrel. Accuracy is great.
My sights are set for dead on at 50 yards using a 65 gr load and it's on at 100 using 90 grains.
Hunting load I use 110 in the .58 Hawken.
I hope you keep liking the front stuffer. I get a lot of enjoyment shooting mine. Just don't expect .308 performance out of it past 100 yards
Kurt