Today everything fell into line and after dropping off the rug-rat, I drove to Nick's to brave the mosquitoes and humidity. This would be my first range trip in several months and my first opportunity to not only shoot my new YHM Phantom 7.62 QD, but to test the Short Action Customs A4 stock work on my R700P .308.
The temperature started at 86 and then held at 90. The RH went from an initial 73.5% to 66.7%. DP stayed at 76 and BP stayed at 30.03. The wind swirled 2 o'clock to 5 o'clock, with an Avg 2 mph with Max being 6.6 mph.
I left the Chrono in the box and tried to focus on the basics. As expected, the bedding job that Mark did held true and his barrel work was flawless. I tried FGMM 168's, M118LR 175's, Hornady's 178 Superformance Match, Remington's 168 Match and a few handloads. Prior to the new stock and barrel reduction to 20", the rifle had shot the FGMM 168's the best. The best performer of the opening round was between 168 gr FGMM and the 178 gr Hornady round.
I eased on the QD YHM and introduced myself to the world of suppressed centerfire rifles. I had ordered a TAB SAS cover for the suppressor, even before I received my stamp. Was I ever glad that I picked up that piece of equipment. I had no idea how quickly the suppressor would go to that high of a temperature. With the TAB SAS, I was able to routinely verify tightness, without needing an Ove Glove or burn kit.
I had read countless threads on POI Shift with a suppressor, so I expected some vertical drop. I was surprised that the two top suppressed performers (168 FGMM & M118LR 175 gr) not only dropped, but moved POI to the right. As the picture indicates, I experienced a 2" drop and 3" right movement (POA was the orange dot in the center of the target) with both the 168 and the 175's. I checked tightness and verified no baffle strikes. All rounds that I tried suppressed had a down & to the right shift.
Some other POI Shift threads advise that any movement other than vertical is an indicator of a problem. Should I be concerned?
The temperature started at 86 and then held at 90. The RH went from an initial 73.5% to 66.7%. DP stayed at 76 and BP stayed at 30.03. The wind swirled 2 o'clock to 5 o'clock, with an Avg 2 mph with Max being 6.6 mph.
I left the Chrono in the box and tried to focus on the basics. As expected, the bedding job that Mark did held true and his barrel work was flawless. I tried FGMM 168's, M118LR 175's, Hornady's 178 Superformance Match, Remington's 168 Match and a few handloads. Prior to the new stock and barrel reduction to 20", the rifle had shot the FGMM 168's the best. The best performer of the opening round was between 168 gr FGMM and the 178 gr Hornady round.
I eased on the QD YHM and introduced myself to the world of suppressed centerfire rifles. I had ordered a TAB SAS cover for the suppressor, even before I received my stamp. Was I ever glad that I picked up that piece of equipment. I had no idea how quickly the suppressor would go to that high of a temperature. With the TAB SAS, I was able to routinely verify tightness, without needing an Ove Glove or burn kit.
I had read countless threads on POI Shift with a suppressor, so I expected some vertical drop. I was surprised that the two top suppressed performers (168 FGMM & M118LR 175 gr) not only dropped, but moved POI to the right. As the picture indicates, I experienced a 2" drop and 3" right movement (POA was the orange dot in the center of the target) with both the 168 and the 175's. I checked tightness and verified no baffle strikes. All rounds that I tried suppressed had a down & to the right shift.
Some other POI Shift threads advise that any movement other than vertical is an indicator of a problem. Should I be concerned?
