I have the 4inch 41 mag ported tracker. I have put approx. 300 rounds through it most max loads and some factory. I have had ZERO problems, no copper or powder spit back in my face like some other TOP name gun and at 20 yds can get a 5 shot ragged hole group. I will say the gun either really likes a round or totally will not group with it. I have had great success with both 210gr XTP and 220gr Speer semijacket bullets using LilGun and H4227. I have only 1 load that works well with H110. The guns timing and lockup is excellent after the rounds I put through it. I like the porting for the reduced recoil but be aware porting gives a muzzle blast second to none WEAR GOOD ear protection, I actually use ear plugs and muffs when shooting this gun. I ordered this gun specifically for hiking and hunting and have not looked back. I own 3 taurus guns, the 41 tracker and 2 millinium pros, PROS is the secret as some of the earlier millenium models seemed to have problems that since then appear to have been ironed out. I think Taurus as other companies went through a reduced quality control period but since have really come to bat.