FX IMPACT .25 ?'s
- Thread starter coonslayer
- Start date
Not sure what the twist rate is, I would like to know that too, but I have the .30 caliber impact and the polymags do not fit in the magazine, so I feed them in one at a time single shot if I use them. Hope this helps
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50 yards can be not regular grouping,,,1.5 inches I would say
25 will be .30 inches or tighter
25 will be .30 inches or tighter
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Twist rate of the few inches of rifling in the end of the barrel is 1:16 The pellets skid through this part of the barrel and don't full engage with the rifling so it can vary. Can pick up as little as 1/3 of the twist rate. For ballistic calculators I use 1:30 Pellet weight and speed will give differing twist rates.
I think it's R/H twist. Someone else may know for sure.
I think it's R/H twist. Someone else may know for sure.
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That is what I was looking for, to see if it would make a difference in the ballistic calculator.
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It is left hand twist. Harry (yrrah) did some investigation about the twist rate, it is posted somewhere on this forum. Interesting stuff.
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I tried looking, but there is so much info kinda scattered around. I was hoping there would be sub chapters by manufacturer or gun.
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Thanks Gijs. Here is a link to Harry's post. http://www.airgunnation.com/topic/twist-rate-of-fx-smooth-twist-barrels/
Managed to post on that tread by accident... Now it back on page 1.
Got fat fingers.
Michael
Managed to post on that tread by accident... Now it back on page 1.
Got fat fingers.
Michael
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