Combro cb-625 MArk 4

[secretagentmole 1,701]

Well as some of you may have read Mole has got a Chrono (about time too shout the masses). The machine I am using is the Combro cb-625 mark 4. This is a tiny gadget, encased in plastic, that goes on the barrel end. The method of ensuring alignment is crude but effective. You hold it on with a couple of rubber bands. It is large enough to cope with silencers up to 32mm diameter. Press the top button of the 3 on the Chrono and it is ready to go. The source of illumination is built into the machine, it does come with a sun shade, or do as I do, shoot in the shadows!

 

This keeps a tally of all the shots passed through it and can calculate the average fps from a string of shots! Combines with a handy little web page, you can then work out your fpe!

 

Foot Pound Energy Calculator

 

This is a compact handy gadget, well worth getting and a useful addition to a shooters inventory!

[SEAN3513 7]

if you have an air rifle....you should have one of these !!!!!

 

they are a fraction of the cost of your gun, and if you change pellets etc.....it keeps you legal

[RiffRaff 5]

Well as some of you may have read Mole has got a Chrono (about time too shout the masses). The machine I am using is the Combro cb-625 mark 4. This is a tiny gadget, encased in plastic, that goes on the barrel end. The method of ensuring alignment is crude but effective. You hold it on with a couple of rubber bands. It is large enough to cope with silencers up to 32mm diameter. Press the top button of the 3 on the Chrono and it is ready to go. The source of illumination is built into the machine, it does come with a sun shade, or do as I do, shoot in the shadows!

 

This keeps a tally of all the shots passed through it and can calculate the average fps from a string of shots! Combines with a handy little web page, you can then work out your fpe!

 

Foot Pound Energy Calculator

 

This is a compact handy gadget, well worth getting and a useful addition to a shooters inventory!

hey moley

you could try this way of holding the combro on your gun use a fishing coaster,its a plastic band thats threaded bit like a hose clip if you get the drift, bit more solid than the good ole mk1 rubber band

 

 

 

http://i46.photobucket.com/albums/f124/RiffRaff-KuH/combro2.jpg

 

stay lucky shoot safe

 

Niel

[secretagentmole 1,701]

Thanks for the tip neil, I will look for one of those! The rubber band works, but this looks a lot better.

[Alex Arrigone 24]

hey mole, i would get a chronograph mate. we have got one and its worth it. its only about £30 too

 

atb alex

[secretagentmole 1,701]

I got one Alex, I reviewed it, it was Neil's tip about holding it on that impressed me, better than rubber bands!

[19powell90 89]

we got the same one as you moley, mine displays both ft/lb and fps so should yours.

 

atb

 

scott

[secretagentmole 1,701]

It would do if I entered the pellet weight, I just get the average FPS reading and do the conversion online. Works for me! Damned nice little unit those Mark 4s! Doing a full run down test on the X2 tomorrow, too windy to shoot! Gusts about 40-45mph round here forecast!

Edited May 2, 2011 by secretagentmole

[matt_hooks 188]

The Combro is ok, but the very short measuring distance means there is a pretty large margin for error, a very fast sampling rate is needed to get an accurate reading for fps. I use a Chrony shooting chrono, which set me back only slightly more than the Combro, and has a 12 inch base length, so a similar sampling rate to the combro gives far better accuracy (the base line on the combro is about 2" iirc?)

 

I'd agree that a chronograph is an essential item in the kit of a shooter, especially an air rifle shooter, and the combro does the job ok.

[secretagentmole 1,701]

The base is 60mm on the Mark 4, which is good enough!

[markha 99]

I have one and also had an F1 in the past, the Combro is just as good, and in essence they tend to give results a little on the high side when compared to high end chrono's, so there is a bit of a margin when wishing to keep your output below the legal limit.

 

Moley, why dont you just find out your pellet weight and enter it into the Combro?, there is no need for an extra website or anything else.... There is a pellet weight data chart on this site somewhere, with the actual pellet weights from different brands.

[secretagentmole 1,701]

I know, I did, the fpe worked out at about 11.36, which I am happy with! Lovely little device! Recommend it to anyone!

[davyt63 1,845]

hi mole

i have the MK4 and a great little tool,had it for about 4years now.

have you seen this link?

 

http://www.chronoscopes.info/manual/index.html

 

regards

 

Davy

[Sweeney-Todd 208]

hi mole

i have the MK4 and a great little tool,had it for about 4years now.

have you seen this link?

 

http://www.chronoscopes.info/manual/index.html

 

regards

 

Davy

 

 

 

Davy, Davy, Davy .......I have the mark 4.....and a great little tool :icon_eek:

 

We dont need to know about your little tool.........but if it makes you feel better to talk about it.................