I just received a 550 IC from a fella on here...anyone had any luck shooting that tight of a constriction? If so what loads?
It's going to used in a Franchi Affinity with Mobil threads....
Thanks in advance....
Yep, used an Indian Creek .555 with my Weatherby xtra Green SA459. Best pattern ever, with APEX #9. Longest shot 44 yards, but it patterned at much longer yardage.