Fx impact m3 .30 dope

[Kenzie.Dunn]

Hello guys ,
Sooo I'm having a dumb issue with dope and zeroing. So my impact is shooting 44.75 jsb pellets @865fps from utah air when they tuned it. I zero at 50yrds and try to type in dope on chairgun or anywhere else it says 100 yards will be 13.25 moa or whatever and the actual 100yrds on scope is showing 11moa. am I doing something wrong on dope or what's going on here ? I have 90moa available on my turret and it's useless cause I don't know what I'm doing lol. Can someone help me out with a dope table maybe ?

 

[18.13]

Probably scope height is wrong (guessing ) best way I have found is to get your gun dialed in at a distance 50yrds or what ever, measure exactly 10yrds and see where you are hitting then ajust scope height in Chairgun to match, just measuring the height is usually wrong

 

[weevil]

Also, if you’re at elevation, check that the conditions are shown correctly. Chairgun will get it wrong if I allow it to calculate density altitude by obtaining my weather info from the internet. Right now, it calculates my density altitude to be -3300ft when in fact it’s +8000ft. That’s a difference of 2moa in drop.

 

[850renxrs]

First thing is it doesn’t matter what speed your gun was shooting at Utah airguns. It only matters how fast it is shooting at present time. Temperature elevation some wear on parts. You may be shooting way slower or even fast right now. You need your own present fps readings.

Second thing is that if you are even a quarter to half inch high at 50yds and you call it zero you will be inches higher at 100yds than the calculations say you should be.

 

[Kenzie.Dunn]

OK awesome thankyou very much I ordered a chronograph it should be here tomorrow I will check these things and get back on here if any questions arise thanks for the quick feedback guys

 

[.20calguy]

First thing is it doesn’t matter what speed your gun was shooting at Utah airguns. It only matters how fast it is shooting at present time. Temperature elevation some wear on parts. You may be shooting way slower or even fast right now. You need your own present fps readings.

Second thing is that if you are even a quarter to half inch high at 50yds and you call it zero you will be inches higher at 100yds than the calculations say you should be.

Agreed on the speed. Utah Airguns set mine to 890 fps .30 cal 44.75 JSB. My average speed is 879 fps here in Louisiana.

Second thing is that 1/4" at 50 yards is 1/2 inch at 100. So any amount that he is off at 50 yards will be doubled at 100.

 

[Kenzie.Dunn]

@.20calguy Yeah that definitely makes sense thanks man.

 

[.20calguy]

@.20calguy Yeah that definitely makes sense thanks man.

I sure wish I was practicing scope doping, but my compresor died.
Lol, I enjoyed killing it.

 

[Kenzie.Dunn]

Aw man that's a bummer hope you get one soon!