What settings are you using to shoot 25.39gn .22 caliber JSB's with your Impact? 700mm or 600mm?
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FX IMPACT .22 CAL. JSB 25.39GN SETTINGS
- Thread starter mantech30
- Start date
Following...mine are spiraling like a B no matter what settings I try out of my 600mm pellet and slug liner.
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Slug liner, 700mm 965ft/s on my MK2. Just did 300/300 with 22 x's on 50 meters Bench Rest competition. They like speed.
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What's your reg pressure at that speed? Raised mine to 150b and was only able to get it around 870 with those pellets.
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Mine is at 155bar but I have elongated TP and Pellet probe. and 700mm barrel / slug liner.
I never saw such low speed on the impact unless you didn't adjust the hammer spring so on the MAX you nave NO play on the block.
Mine out of the box, just adjusting the spring was doing 930 ft/s with my 600mm barrel
I never saw such low speed on the impact unless you didn't adjust the hammer spring so on the MAX you nave NO play on the block.
Mine out of the box, just adjusting the spring was doing 930 ft/s with my 600mm barrel
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170 bar on the reg, hammer maxxed out, will have to check the valve setting.
I get over 1000FPS with the 700 B pellet liner, accuraccy is superb at 100 as long as you are going over 950 with the 25's.
I get over 1000FPS with the 700 B pellet liner, accuraccy is superb at 100 as long as you are going over 950 with the 25's.
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What is too high on the reg pressure of an unmodified MKII? Looking like a 600mm barrel is mostly suited to the 18gr or lower pellets/slugs.
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Any MKII should be able to handle 160-170 on the reg, the liner type defines the pellet not the length.
'A' liner in .22 would be for the 18g, 'B' liner for the 25g.
'A' liner in .22 would be for the 18g, 'B' liner for the 25g.
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i have my impact MK2 with 700mm barrel tuned for 18.13gr jsb´s @895fps....my rifle is burning 0.66bar per shot.... reg pressur is 105bar..... from 250 all the way down to 105bar, i have 145bar to play (145/0.66=219 shots aprox.)
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Don't see why you wouldnt use a 500mm barrel to do that TBH, okay I know that you use less air with a longer barrel per shot but you miss one point, the higher you set your reg pressure the lower the ES will be.
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