My barrel is 1 1/8" octagonal, 32" long w/breech - .690" bore with a 66" twist and .012" deep, grooves barely wider than the lands.

I am MOST excited to hear about a 4140 barrel.

If I were to do another .69, it would have a 1 3/16" bl. tapered to 1 1/16", .690" bore with an 80" twist and rifling .006" deep rifling, grooves double the width of the lands & it would be a stress relieved 4140 barrel.

If I ever replace my current .69 barrel and I might, it will be with a 1 1/8" tapered octagonal to 1 1/6" muzzle. Ed Rayle's 16 bore, ie: actually a 15 bore with .575" bore and with the above noted rifling characteristics - again, a stress relieved 4140 barrel.

The reason I hang on to my old .69, is it will still put 5 consecutive shots into 1" to 1 1/2" at 100meters off bags, & 2 to 2 1/2" at 200 yards. It's hard to discard a barrel that beats many modern guns that are using scopes.

$740.00 if compsed of good parts is INEXPENSIVE - note the capital letters.

I would estimate that most good guns today, have roughly $1,000 to 1,200 in parts depending on the wood.

My brother's rifles and smoothbores run those figures in parts alone.