Hi all, first post here. Been lurking for a while and I've got some great help so far, so I'm hoping you all can help me with a problem I'm having. I recently bought a used HW97k in 177 from Krale. I've only shot a few dozen shots through it and it is really accurate, but had a little twang that I was hoping to dull. Also, since I didn't know how much it was used, I went ahead and started tearing it down figuring I'd give it a cleaning and re-lube.
My problem lies in the fact that I'd like the gun to do around 12 ft-lb, and I'd like to buy just a spring, not a full tuning kit. However, it seems harder than I figured it would be to find a drop-in 12 ft-lb spring, nor much information on what to do to a particular spring to make it around 12 ft-lb. I can cut, collapse, and grind spring ends if needed, just need guidance on what to shoot for (# coils, overall length, etc). I've emailed Vortek but haven't received a response, and ARH's short responses are leaving me with more questions than answers--hence leading me here.
What I do know is that the spring that came out of it has 32 active coils (not counting collapsed ends, so maybe that is 34 depending on how you're supposed to count them) and is 10.5" long, which sticks out 1.5" from the spring tube. This leads me to believe it was the "full power" 16 ft-lb version, because I've seen a lot of comments and videos that suggest the end of the 12 ft-lb spring sits about at the end of the spring tube.
My use is backyard target shooting, nothing formal, so I don't need exactly just under 12 for competition or whatever, nor do I have a chrono to check it. Simply looking for advice on others who may have done this and ended up closer to 12 than the "full power" 16 ft-lb. At this point I'm considering buying the Hornet spring from ARH and compression-setting it then cutting/collapsing/grinding ends to be just over 9" long. However, that really is just a guess so I'm hoping others may have some advice on how to get a spring-only tune in the 12 ft-lb range.
My problem lies in the fact that I'd like the gun to do around 12 ft-lb, and I'd like to buy just a spring, not a full tuning kit. However, it seems harder than I figured it would be to find a drop-in 12 ft-lb spring, nor much information on what to do to a particular spring to make it around 12 ft-lb. I can cut, collapse, and grind spring ends if needed, just need guidance on what to shoot for (# coils, overall length, etc). I've emailed Vortek but haven't received a response, and ARH's short responses are leaving me with more questions than answers--hence leading me here.
What I do know is that the spring that came out of it has 32 active coils (not counting collapsed ends, so maybe that is 34 depending on how you're supposed to count them) and is 10.5" long, which sticks out 1.5" from the spring tube. This leads me to believe it was the "full power" 16 ft-lb version, because I've seen a lot of comments and videos that suggest the end of the 12 ft-lb spring sits about at the end of the spring tube.
My use is backyard target shooting, nothing formal, so I don't need exactly just under 12 for competition or whatever, nor do I have a chrono to check it. Simply looking for advice on others who may have done this and ended up closer to 12 than the "full power" 16 ft-lb. At this point I'm considering buying the Hornet spring from ARH and compression-setting it then cutting/collapsing/grinding ends to be just over 9" long. However, that really is just a guess so I'm hoping others may have some advice on how to get a spring-only tune in the 12 ft-lb range.
