Optimum Velocity For JSB Redesign at 100 Yards??

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wajie316

Member
Aug 10, 2017
64
1
Sindh
I am interested to know if anyone tested jsb redesigned at 100 yards with impact stx barrel. 

Have tested these at 950-960 but the groups were not great (at 100 yards). I was wondering if i should increase the speed a lil more say around 990-1000 fps. 

I need to tune the gun for 100 yards as there is a local competition coming up. 

Any feedback will be highly appreciated. Cheers
 
As Laity says the 970's works really well with the RW .22HP and the ART barrel, we did two things as far as the original post goes.

1) IMPACT MKII STX 700mm pushing the 25RD's upto 1100FPS with the reg at 170 bar, this is too fast, 1000FPS with the STX is the best speed.

2) RW with a 600 & 700mm STX liner fitted in a custom barrel design, again just below 1000 FPS was the best, the slugs got better the faster we shot them.
 
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As Laity says the 970's works really well with the RW .22HP and the ART barrel, we did two things as far as the original post goes.

1) IMPACT MKII STX 700mm pushing the 25RD's upto 1100FPS with the reg at 170 bar, this is too fast, 1000FPS with the STX is the best speed.

2) RW with a 600 & 700mm STX liner fitted in a custom barrel design, again just below 1000 FPS was the best, the slugs got better the faster we shot them.
Click to expand...

Will try to shoot these at 1000fps at a 100 yard with MK2 STX A LINER BARREL. 
 
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