Chair Gun Pro

[sureshot.177 49]

I'm having problems using chair gun pro is there anyone out there that could help me work it all out I've watched the videos on YouTube and I'm still lost (bit of a simpleton) I've got my fps weight in grains/grams and I know my foot poundage if I need to pay someone to have a look I wouldn't mind thanks again dan

[moxy 617]

What's up with zini's vid

[sureshot.177 49]

If that's VHTV nothing mate I'm just thick hahahahaha I don't really know what it means and it's pointless doing it if its gonna be a crap job as we say in bristol it's got to be a

PROPER JOB

[villaman 9,983]

Whats wrong ,what don't you under stand ?

[sureshot.177 49]

I do everything it says in the video but it doesn't come true to form at 61yards it's bang on 3 Mil-dots but on chair gun it says it 58 yards this is on 10x mag

[zini 1,939]

I do everything it says in the video but it doesn't come true to form at 61yards it's bang on 3 Mil-dots but on chair gun it says it 58 yards this is on 10x mag

Thats down to 2 things i would say mate.

 

1 the scope height.

 

2. The biggest difference though will be your pellets true BC. This makes a hell of a difference if not calibrated.

 

Si

[davyt63 1,845]

hi Dan

will agree with Si

you will have to do POA to POI Point Of Aim to Point Of Impact drop,then measure the distance of the drop.

this will give you your true BC Ballistic coefficient

enter this in with you scope height and the rest of the data

[secretagentmole 1,701]

The mag on the scope is not entirely accurate either! I know! Mine was supposed to give 5 metre steps at 8X mag, turns out it works at 10X on my scope!

[davyt63 1,845]

The mag on the scope is not entirely accurate either! I know! Mine was supposed to give 5 metre steps at 8X mag, turns out it works at 10X on my scope!

 

 

i may stand corrected,but this is because @ x10 mag its a true mildot

[sureshot.177 49]

What distance should I do the POI at

I think it's me not measuring my scope height correct and how can I sort the pellets

[davyt63 1,845]

What distance should I do the POI at

I think it's me not measuring my scope height correct and how can I sort the pellets

 

 

how far do you shoot out to?

 

you can weigh them on some digital scales

 

scope height how to measure,this is the way i do it.

measure the with of the barrle lets say 15mm then half it = 7.5mm then measure objective end lets say 52mm the half it = 26mm.now go back to the barrle and put a pencil mark at 7.5mm on the barrle,make sure its in line with the objective end,now go to objective end and put a pencil mark at 26mm.

 

once you have both pencil marks in place measure from A 7.5mm to B 26mm = your scope height

 

if you end up with say 52.05 then round it of = 52mm

 

 

 

Edited to say:for the newbies,found this image,it will give you more of an idea

 

Edited February 14, 2013 by davyt63

[zini 1,939]

Yes this is a spot on answer Davy and a very good illustration with the picture.

 

Sure Shoy scope height is important but pellet bc and correct power input is very very critical for accurate data.

 

If all done correctly your scope and actual POI will match to the yard as we have found out now many many times.

 

My HW97KT as been done this way and is meter accurate to 65 meters. Its just me who lets it down.

[davyt63 1,845]

thanks Si

 

see i do listen!

[sureshot.177 49]

Ok thanks chaps ill have a proper go Sunday and ill post the results I notice you use Rws is it worth me having ago with them I have a tin of 4.52 AA fields if anyone wants a swap

[sureshot.177 49]

And I've watched part 1 now that might of helped yesterday I would of given it a thumb up but I can't sorry