I have several .44 Magnum rifles that do not shoot accurately with boolits over 240 grains due to their 1 in 38" rifling twist rates. I have wanted a nice single shot .44 Magnum rifle with a faster twist barrel for 280 and 310 grain boolits. I have considered finding an old rolling block action and rebarreling it for .44 Magnum to fill this niche, but costs of well over $1000 for action, barrel and gunsmithing have kept me from acting. Pedersoli makes replica rollers for pistol caliber cartridges for around $1250 but no .44 magnum.
A friend turned me on to the Tippmann Armory rolling block rifles. Made entirely in the U.S.A, they offer Rolling block rifles in .357 Magnum, .44 Magnum, and .45-70 Government chambering for around $900. I called and talked to their representative and they do rifle their .44 Magnum barrels with a 1 in 20 twist rate. I missed my chance to order one when Lone Star was still making their rolling block rifles since I couldn't come up with the $1500 down payment (and a one-year waiting period) on a $3000+ rifle.
At $899, the Tippmann roller seems like a real bargain especially if made here in the U.S. so I bought it. I realize I should have posted questions about Tippmann Armory rolling block rifles on this forum for feed-back before ordering, but he who hesitates is lost. Anyone on this forum have any experience with their rifles?