I have a factory Pro-Hunter 25/06 Pistol barrel that I bought second hand from an Idaho Pawn Shop. My experience has been quite the opposite. The barrel appeared have been shot very little by its previous owner, if at all. I shoot primarily 115-120 gr Nosler bullets and Federal's 115 gr. blue box factory load in which I believe the bullet is made by Speer. My primary powders are Accurate 4350, RL-25, RL-19, and H-4831SC. All of these powders are excellent shooters, and extremely accurate in my pistol. The only problem that I had initially was high pressures with certain loads due to the extremely short chamber leade. SAAMI MAX OAL is-3.250. Max length that I can load is 3.238 with 115 gr. BT, which has quite a bit of taper. Once I shortened up the loads a bit accuracy improved. Another thing that keeps accuracy consistent is the Burris 3 x 12 Ballistic Plex scope clamped to a Warne 6 screw base by four Warne Maxima rings. Consistently solid from year to year.