chinese midget chrony vs. green f1

Forums Other Parts, Accessories, & Equipment chinese midget chrony vs. green f1

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    ranedouglas
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     –  john wayne's thread was getting long , but that was an excellent video review of these $30 little plastic cubes that require no special lighting.  after seeing that post here , mine took about 3 weeks to arrive.  i didnt realize it was so small , but i needed something for the workbench that would work indoors.  before this, i had to have daylight for the used green f1 that was given to me.       ……………………….   it was 66 degrees, light wind at 750 ft above sea level , and 4:30 pm dst.   here's how things went :  ( all using .22 caliber walmart crosman premier hollow points – 14.3 grains and 6" from chrony and 3 shot averages. )   ……  this webley valuemax xs (extra silent) with striker 1000 wood stock generally shoots a consistent 775 fps, it's lightweight, and it's accurate. it was one of a dozen that i got when i found the sold off, wholesaled .20 vmx's webley liquidated to a georgia outfit.  i had never seen this variation of vmx rifles (they had brittish tags saying 3 yr warranty hanging from trigger guards, so i have no idea what market they were intended for, and they all shot hot).  once in a while, a cheap, mass produced gun shoots perfectly.  this one has never been opened up.  they were $55 each.  today, it averaged 775 over the f1 and 239 m/s over the cube (239 x 3.281 = 784 fps).     ……….  this old school bsa supersport magnum i found on gunbroker recently.  it had a cocking issue, so we agreed upon $170 shipped.  i love it.  it's in very good, beautiful condition.  ive always wanted one, but .177 bsa break barrels are not accurate for me (my hold).  it usually averages 680 fps , but seems to like the heavier bsa storm pellets best.  ive always heard that .22 cal is a tad bigger than 5.5 mm – but this one is opposite.  breech is too tight for most of my other pellets and have to be seated with probe, but not the bsa storm pellets which i can manually snug in fully.   today it averaged 675 fps over the f1 and 199 m/s over the midget cube (652 fps)   ……..    not in photos is the marksman model 70 i have recently put a shortened barrel onto.  i understood that these hw/bsf rifles were comparable to an r9 or hw95 , but idk.  i am considering to just put the 19" .177 barrel back onto it and leave it alone.  it's too slow with this barrel which could even a .22 lr barrel.   it usually averages 630 fps, as it did today over the green f1 and 192 m/s over the cubelett (629 fps).     —-  conclusion – john was right.  it's close enough. —-    i wish these findings were a predictable pattern of mis-calibration , but even that is bent.  as compared to the f1 , the com.chi.cube relates higher reads in the 775 fps area , lower reads in the 675 fps area , and nearly the same around the 630 fps area.  wtf am i supposed to do with that ?   i quit meteorology school because i couldnt grasp the math (trig and calculus).   also of mention is the fact that my control, the f1 chrony, had been shot and has trouble turning on unless one dicks around with the switch (which is why tommy wade gave it to me), and daily bounces around in the back of my jeep.  further mention is that i was multiplying by 3 , instead of the more correct 3.3 , to get my fps estimates.   (my bad.)   i had mentioned that i could do this comparison this weekend – and i had fun !   it's airgunning !   – rane on !  – sincerely, redballer.              ………………..                    …      …   .   ………………………………                      ……………………..                 – ps :  it is what it is…..$30…..it is what it is.   if it were any cheaper, we might never have considered it.  but who knows.    please tell us more about your comparisons using the midget cube thingy….. 

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    Scotchmo
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    I bought a mini chrono a while back, intending to use it when traveling. Nice that it can work well in low light. I also have an F-1 and an Alpha that match each other's readings closely. The mini supposedly reads in m/s but actually needs to be multiplied by 3.4 to 3.5 (it's not all that consistent) to match the F-1 and Alpha.

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    VETTNUT
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    I checked my two at 65 deg. with my Sig ASP and AA 16rg, using 3.28 conversion for the meter to feet. My Crony was 820 and my mini crony after conversion was 831. Within about 1% difference. Close enough for me. Also did it using a Daisy 777 and it was almost the same at 375 fps. Thanks to JoeWR or I might have never had a mini.

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