First the back ground. Chronographed rifle with multiple different pellets. Never exceeded 21.85 ft/lbs (and that was with H&N sniper Lights at 14.94 gr). I contacted SIG customer service (CS) to see how I should proceed. CS spent lots of time with me and with acting as the go between with SIG ASP20 engineering staff. SIG finally advised that I should send the rifle to them. SIG took it apart, inspected it, inserted a new gas ram and ram seal, replaced all stock screws, and test fired the rifle. They found that it met factory specifications.
SIG advised that they did not find anything wrong with the rifle and still believe that any differences between factory spec and my earlier results were caused by elevation differences (approximately 1000 feet).
I received the rifle yesterday and unboxed it. I mounted the scope today and proceeded to chronograph another string of ten pellets. Summarized results with JSB Jumbo Express (14.35 gr) pellets at 1419 feet elevation with a temperature of 63 degrees F follow.
Max 858 FPS
Min 833 FPS
Avg 844 FPS
SD 9.7
ft/lbs 22.7
My findings are interesting. Energy increased by 1.27 ft/lbs while velocity picked up by an average of 24 fps when comparing results using the same pellet brand, type and weight.
SIG stood behind their rifle to the extent that they paid shipping both ways, worked on the gun, and replaced parts within it; in spite of their stated belief that elevation was the issue. The gun now shoots at almost 23 ft/lbs so something must have changed. Perhaps a nicked seal caused the issue, but who knows for sure.
The bottom line is that I'm very satisfied with efforts SIG took to investigate my concerns and efforts they took to rectify them. In my opinion, SIG has demonstrated that they are serious about the APS20. I would assume they will continue to be aggressive as long as the market supports the time, effort and money invested in the product.
Best wishes.
The other Mark B.
SIG advised that they did not find anything wrong with the rifle and still believe that any differences between factory spec and my earlier results were caused by elevation differences (approximately 1000 feet).
I received the rifle yesterday and unboxed it. I mounted the scope today and proceeded to chronograph another string of ten pellets. Summarized results with JSB Jumbo Express (14.35 gr) pellets at 1419 feet elevation with a temperature of 63 degrees F follow.
Max 858 FPS
Min 833 FPS
Avg 844 FPS
SD 9.7
ft/lbs 22.7
My findings are interesting. Energy increased by 1.27 ft/lbs while velocity picked up by an average of 24 fps when comparing results using the same pellet brand, type and weight.
SIG stood behind their rifle to the extent that they paid shipping both ways, worked on the gun, and replaced parts within it; in spite of their stated belief that elevation was the issue. The gun now shoots at almost 23 ft/lbs so something must have changed. Perhaps a nicked seal caused the issue, but who knows for sure.
The bottom line is that I'm very satisfied with efforts SIG took to investigate my concerns and efforts they took to rectify them. In my opinion, SIG has demonstrated that they are serious about the APS20. I would assume they will continue to be aggressive as long as the market supports the time, effort and money invested in the product.
Best wishes.
The other Mark B.
