Fx Bobcat on JSB King Heavy mk 1

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Patrick

Patrick

Member
Apr 28, 2015
390
10
Burgenland
hy guys!

today i got out my Bobcat and shooting a Little bit, from the truing capability on strelok it says that it shoots the JSB Kings at around 1000 fps. Then i go to the King Heavy mk1 and they were only at around 738 fps fast.

so my question: are the mk2 a Little Bit smaller in diameter ore the same as the mk1s?

cause i could Not unterstand the big difference in fps between the Kings and King Heavy mk1s, normal the King heavy are around 80fps slower then de Kings or am i completely wrong?
 
well maybe im missing something but.. if 25 cal the kings are 25 grains and the king heavies (both types) are about 34 grains. So you should definately expect slower velocities. Also did you actually chronograph your gun with these pellets or just go with what the app said?

when you say kings do you mean king heavy? because kings are really only 25 grains. King heavies are 33.95 grains. and king heavies mk11 are also 33.95 gr

Sorry if im not getting it. Im a little slow lately. lol
 
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crittahitta with Kings i mean the 25grains. No chronographing yet. I just Go with what the app Said, and its correct with the scope Setting at different distances. (25grains) Zeroing at 57meters and for 74 meters i have to Go 4.6 MOA up and it works. (34grains) Zeroing 47meters and for 74meters i have to Go 9.1 MOA up (34grains). So i really dont know Whats Up.

sonny yeah ive heard about that, and that makes me Not understanding what the app says.

i really have to take the Chrony and measure the correct Speed!

can anyone Tell me whats BCs are correct for the FX ST Barrels?

for the 25grain Kings i have 0.038

for the 34grain Kings i have 0.043
 
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So guys! ;)



In the last few days i‘ve testet a lot and chronographed each shot string!

my Bobcat doesnt really like the King heavys, so i changed back to the 25 grain Kings an tuned it back to shoot at 910 fps.

and the best thing ever, accuracy was back , i‘ve shot a 10 Shot group from 81yards at .63“ctc.

I got 88 good shots with a high at 915 fps and low at 906 fps.



ps: Sorry for my horrible english, but i Hope you guys Unterstand what i mean! ;)

greets Patrick!
 
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1538588584_3181899405bb4ffa8a6a130.67520159_fx_bobcat_mk1_22_c.jpg

 
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