Hello all, Just joined the forum. Have owned a S510 thumbhole .177 for a couple of years now and been extremely happy/impressed (also have HW 77k , gamo and shoot Sako TRG 22 0.308, Winchester 1873 .357 , .22 various at Bisley 25-1200 yds , well not the .22, .357 beyond 200 right !). Reason for post...