I do believe I am ready to do more testing with the MKIIs. I set the Impact up with a good bit of range using the power wheel.
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Resized JSB King heavy mkI for my .25 Bobcat
- Thread starter Patrick
- Start date
I do believe I am ready to do more testing with the MKIIs. I set the Impact up with a good bit of range using the power wheel.
Yep, that looks really good!!
a lot of Potential!
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It's still fairly windy but wanted to get some groups in with the Impact 2 and sized MKIIs. .251" on the left and .252" on the right with PW settings. Tune can be found above. I am liking the PW 5, 905 to 915 FPS results with the .252s. That's 64 FPE drilling those holes in .25 cal. At least they aren't any worse than the slower speeds. However, the average MOA for the .251 were 0.946" while the .252 were 1.05".
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I ran just these MKIIs sized to 6.375mm (.251") today to get the gun settled down more from all of the adjusting and different head sizes lately.
Here are five 5-shot groups at 52 yards. Also, the chronograph numbers for each shot. The 34.66 grain sorted pellets are +/- 10 grains.
For not having a sturdy rest, 59 and gusts of wind, they are not to bad.
Here are five 5-shot groups at 52 yards. Also, the chronograph numbers for each shot. The 34.66 grain sorted pellets are +/- 10 grains.
For not having a sturdy rest, 59 and gusts of wind, they are not to bad.
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I ran just these MKIIs sized to 6.375mm (.251") today to get the gun settled down more from all of the adjusting and different head sizes lately.
Here are five 5-shot groups at 52 yards. Also, the chronograph numbers for each shot. The 34.66 grain sorted pellets are +/- 10 grains.
For not having a sturdy rest, 59 and gusts of wind, they are not to bad.
That’s really great, seems to like the .251 the best! A lot of work what u do respect my friend! U can try a greater distance, on my test the groups are closing further away. Don’t know why but it works on my Bobcat.
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Thanks! It is becoming clear that the MKIIs like it between 896 to 900 FPS when sized to 6.375mm (0.251"). Sub MOA many times there.
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Thanks! It is becoming clear that the MKIIs like it between 896 to 900 FPS when sized to 6.375mm (0.251"). Sub MOA many times there.
Absolutely, and that’s the work of trail and error till it works.
have u tried at a further distance?
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