4140 steel hollow bar

[powder und ball]

I posted a topic about 2 weeks ago on this page that i was in the procces of building a matchlock musket.  I posted that i was planning on having a bore of 5/8'' or 3/4'' but when i went to the local junkyard i stubled along a steel hollow bar.  This has a 3/8'' id or .40 caliber and a 3/8'' wall.  Now i was not going to buy it because of the small bore but then i found that it was not bored the rest of the way thorugh there is still about 2 inches of steel unbored.  This means i will not have to breach plug.  Now i just have to drill a vent hole the total length of hollow space is 42''.  Im thinking 30 grains of fffg.

[Double D]

Hey kool!!   Make sure you take pictures!

[powder und ball]

ill try to get some pics in i steel have to machine a lock and inlet the wood stock for the tube im planning on proofe testing it at 80 grs fffg

[Cat Whisperer]

Im thinking 30 grains of fffg.

triple fg might well be good for small bore long barrel.  Consider Double fg as well - lower pressure, slower/longer burning.