I'm wanting to build some replicas of early match and snaphaunce rifles. Ideally, I'd like to get a .75 cal, swamped, 50" bbl blank in the white. At this point, I'd settle for almost any cal in any length over 48". Most bbl manufactures seem to stop at 44". I was hoping to avoid spending a fortune having a custom blank made. I figured the 44" finished ones were being produced from original stock longer than that. Any suggestions?