What's a good starting point for .30 caliber 44 grain pellets? Currently shooting about 840 fps.
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Good.30 pellet speed
- Thread starter Martin3528
- Start date
I'm the odd one out. I have had the best results at 900-910 from the 44.75's in the 1:40 twist FX 700mm liner.
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FX Wildcat MK3 Sniper shooting @ 850 FPS, Vulcan 3 (700mm) @ 986 FPS and Uragan 2 (700mm) @ 984 FPS. Wildcat has best accuracy followed by Uragan 2, Vulcan 3, not so much. (U2 and V3 have unchoked slug barrels.) WM
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Odd is being polite to yourself Lewis ..
I did not know you had .30 guns.. We will talk later today ..
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Twist rate on my MK2 is 37:1. I'm shooting around 910. I does really well but maybe I should experiment in the 860 -910 range just to make sure it's doing it's best. BTW, this barrel does not shoot slugs well at all.
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Can I get better groups with 44.75 going 875-900 fps than 1050 fps? Yes.
Is the difference enough for me to turn down the power? Not usually.
Is the difference enough for me to turn down the power? Not usually.
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My FX Boss (Original Smooth Twist barrel) is slinging JSB 44.75 & Hades at 885 to 895fps since I installed a Huma reg set at 160 bar. It's never been more accurate. It didn't have enough power before to shoot Hades with appreciable accuracy. The difference between shooting at 840-850fps & now at 885-895 has been amazing.
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