Hey Guys,
Went out to the range (outdoor) for the first time this year to shoot my .22 caliber RAW HM1000x LRT. The gun was tuned last year to shoot 18.13 JSB's at 100 yards. During the Winter months I had increased my regulator's set-point from 122 bar to about 130 bar as I was going to start testing/tuning for 25.39 grain, redesigned JSB (FX). I also reinstalled the OEM hammer spring which was stiffer vs. the one I had been using to get the 18.13 grain pellets to 950 fps.
On this gun I have changed out the regulator seats to peek, the hammer tip to peek, added an addition 20 cc plenum, a SSG and have incorporated a barrel harmonic tuning device.
Before shooting the 25.39 JSB's I wanted to shoot a few clips of the 18.13 JSB's to see how they'd group at 100 yards moving faster. With the lowest hammer spring setting, the 18.13's were moving at 1050 fps (higher set-point and stronger hammer spring). I was happy to get 7 of 12 shots under 1", and 10 of 12 under 1.2", 11 of 12 under 1.5" and the last one must of been a wild flyer or I screwed up.
All pellets were taken straight from the tin without measuring in any way.
My question is: How much better could this group be by weighing, head/skirt testing pellets for consistency before hand?
I almost think this is about as good as I can do without ruling out pellet inconsistencies or somehow improving my (shooting eye) eyesight? I've also got the Element Helix 6x24x50 SFP scope - which is pretty good. My eyesight in my shooting eye is only 20-30, which gets very tired trying to focus over a long period.
Lastly, because the tune was made for shooting 18.13 pellets last year, I only was able to get 935 fps out of the 25.39 JSB's which resulted in groups that were worse than above. It's amazing how much individualizing each tune needs to be for each new pellet. The 25.39 likely needs an even higher set-point (maybe 135 bar) and different hammer spring because with the spring maxed out, I was only able to get 935 fps.
Went out to the range (outdoor) for the first time this year to shoot my .22 caliber RAW HM1000x LRT. The gun was tuned last year to shoot 18.13 JSB's at 100 yards. During the Winter months I had increased my regulator's set-point from 122 bar to about 130 bar as I was going to start testing/tuning for 25.39 grain, redesigned JSB (FX). I also reinstalled the OEM hammer spring which was stiffer vs. the one I had been using to get the 18.13 grain pellets to 950 fps.
On this gun I have changed out the regulator seats to peek, the hammer tip to peek, added an addition 20 cc plenum, a SSG and have incorporated a barrel harmonic tuning device.
Before shooting the 25.39 JSB's I wanted to shoot a few clips of the 18.13 JSB's to see how they'd group at 100 yards moving faster. With the lowest hammer spring setting, the 18.13's were moving at 1050 fps (higher set-point and stronger hammer spring). I was happy to get 7 of 12 shots under 1", and 10 of 12 under 1.2", 11 of 12 under 1.5" and the last one must of been a wild flyer or I screwed up.
All pellets were taken straight from the tin without measuring in any way.
My question is: How much better could this group be by weighing, head/skirt testing pellets for consistency before hand?
I almost think this is about as good as I can do without ruling out pellet inconsistencies or somehow improving my (shooting eye) eyesight? I've also got the Element Helix 6x24x50 SFP scope - which is pretty good. My eyesight in my shooting eye is only 20-30, which gets very tired trying to focus over a long period.
Lastly, because the tune was made for shooting 18.13 pellets last year, I only was able to get 935 fps out of the 25.39 JSB's which resulted in groups that were worse than above. It's amazing how much individualizing each tune needs to be for each new pellet. The 25.39 likely needs an even higher set-point (maybe 135 bar) and different hammer spring because with the spring maxed out, I was only able to get 935 fps.
