chrony readings

[fry 209]

if you say put a 177 pellet that is lighter say 7.9gr through the same rifle and then with a heavier 8.4 pellrt will the readings very a lot thanks

[barrywhite 282]

yes and no

[zini 1,939]

Yes normally but not by loads.

[Buster321c 1,010]

Have a play .........

 

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

[fry 209]

welll i got daystates 7.9s doin 10,56 ish qn aa fields 8.4

doin 11.20 retty consistant is thatg right??

Edited May 22, 2012 by fry

[fry 209]

sorry bout the retard spelling

[robwelsh 354]

The heavier pellet in a pcp tends to up ft lbs , and lighter pellet in a spring ups ft lbs

[fry 209]

The heavier pellet in a pcp tends to up ft lbs , and lighter pellet in a spring ups ft lbs

ah great mine is oposite

[robwelsh 354]

Ye but it doesn't always work that way lol is it a spring gun? Aa pellets are softer so probably expand better in the bore

[fry 209]

put another lod washer in it brung it up to 11

[Phantom 631]

Hiya Frank,

 

Pellets can either up or down the power a fair whack. Chronoed my S200 the other day. This is the average data that it returned:

 

Bisley Magnums 21grain @ 11.50 ft/lbs (max was 11.76)

Crosman Premier Ultra Magnums 14.30grain @ 10.25 ft/lbs

RWS SuperFields 15.9 grain @ 10.87 ft/lbs

RWS Hobbies 11.90 grain @ 9.50 ft/lbs

 

Now the really interesting thing was that Air Arms Fields at 15.9 grain used to give me 10.50 ft/lbs, despite being the same weight as the RWS SF's. Thus proving that it's not just the weight of the pellet but the combination of weight and shape of the pellet that makes up the count

 

I shall; before I go out run the same pellets through my springer for you and add the data later

 

Tony

[Phantom 631]

Hi again Frank,

 

Just put the following through my springer XS19

 

Hobbies 11.9 grain running @ 9.92 ft/lbs

Crosman Prem Ultra Mags14:3 grain @ 10.08

Superfields 15.9 grain @ 10.29

Bisley Magnums 21 grain @ 8.54

 

Tony

[Skot Ruthless Teale 1,701]

tony what chrono do you use? i have a combro 425 thingy whatever ya call it.. but to be honest its too fiddly and a pain in the backside lol.

also on the springer will the recoil affect the readings slightly..

 

i was thinking about an F1 chrony or something similar but read a few revies online about poor lighting not giving readings and the muzzle blast affecting it also, so having to hold muzzle a few inches further away.. and the sensors only having a 3inch window for the pellet to travel through for a decent reading. if you understand that lol

 

dont really want to spend another 100-130quid but needs must and its quite an important bit of kit to have.. and i seriously dont trust my combro

 

last thing i want is an over-the-limit rifle if i get hassled by the police.

[fry 209]

mmmmmm very interteresting had my first i77 w=and wind experience last night doesnot make for easy zeroing

[fry 209]

interesting stuff had my firsrt 177 and wind experiences not easy to zero shot nothing