Two questions from the old newbie here. For the 25HGS match what is the aiming point, the mid or the top of the bottle (I assume it's the mid)? Please explain what is the "locking in" that isn't permitted in the 50 & 100RFR bench matches? BTW, regarding my previous questions about sighting shots, Bigsmoke was right -- my best shot of the five in the 24RFO match was the first cold bore shot! Looking forward to more of those postals!