Hi, I have two target models, one a H&R and the other a Wesson and Harrington. Accuracy at best was mediocre, until I talked to a factory rep at H&R and found out the barrels are supposed to be .379. I changed to Laser Cast 260 gr gas checked at .380 diameter and groups shrunk down to 1" at 100 yards. The H&R chambers tight with the .380 bullets, but the Wesson and Harrington is fine. I regularly shoot steel targets at 100, 200 and 300 yards. One you get your target model shooting right, you will want to shoot it all the time!