about all I can say about the Remington ultimate muzzleloader they're good guns to build on. If the gun you have is shooting good I wouldn't recommend buying a Remington ultimate.I have been getting these guns replacing the barrels with my breech system and put my 45 caliber Barrel on them. My gun uses no savage and it doesn't use shotgun primers who uses large rifle primers which are more accurate The Savage are the biggest accuracy loss in your muzzle the sa if you get a gun that will shoot them they're about impossible to load.my guns aren't lightweights I use a sendero size barrel with a 5-inch breach in order to stand the pressure they're shooting a 270 grain bullet at 3000 fps. Here is two groups fired out of two different guns they were both bad dog muzzle loaders I put Brux barrels on them