On occasion I use to slip in a long mag tube for ten rounds of 45 Colt prior to fitting the 45 Special lifter.
In the old days of SASS 7 was enough generally.
Barrel was a Shilen .45 match pistol blank. We cut and turned it to, 23", medium heavy, tapered, recessed crown. Just barely fits into the forearm cap. Receiver, side plates, crescent butt plate, forearm tip are nickel. Side plates are engraved. Sights are set far back and far forward to maximize sight radius. My pards call it the "sniper '73" Swings better than a 20" short rifle. Just a bit lighter. But better balance IMO. Shoots better and easier to hit with than a 24."