Some wusses like me have become more recoil sensitive as we aged. My son-in-law laughed at me because I put a muzzle break and Limbsaver recoil pad on my Saiga in 308. Yes, muzzle breaks do work! My 308 Saiga has the recoil of a 22 magnum. It's not pleasent to shoot bolt action centerfire rifles for me anymore. A screw on muzzle break for the rifles mentioned would alter the rifle, taking away historical value and making them non C&R, so there's not much of a market for them. If you really want one, use a clamp on.
Alan is correct in saying that a properly made muzzle-brake will work. However, I have yet to find anyone who has put one of the "ebay-special" muzzle brakes on an M44 or M38 and have it function properly. I have, however seen one launched downrange.
I use a PAST strap-on recoil pad when I shoot my Mosins, as well. Besides, the muzzle blast is half the fun. Especially watching the jaws drop at the other shooting ports.