A Guide to Jsb pellet tin label meanings and what to look for

[Monkeypaws]

I use JSB Heavies through my HFT500. I size by head and then by weight in increments of 0.1gn. In a recent batch of 4.52's, out of 6 tins I only had 126 at 4.51, 18 at 4.52 - everything else was 4.50 or smaller.JSB heavies however, in my experince, are superbly made in terms of conformation. Currently don't have a gauge to measure below 4.51 but have a 4.50 on order. I find that shooting a single head size/weight combo at a time is much more important than trying to isolate the single combo that works best. . I might have to adjust my POI slightly but once set a differnt combo will be just as accurate as the next. So one day I will shoot 4.52 at 13.40-13.50gn and the next 4.50 at 13.30 - 13.40gn.
Worth throwning concentricity in to the ring. I find that weeding out asymmetric pellets has much more significant effect on fliers than weight or head size.

 

[Monkeypaws]

Did some QC this moring and found 3 distinct calyx shapes in the JSB Heavies. Tested the largest and smallest at the range and with the same head size and weight, there was no appreciable difference in accuracy or POI.

 

[Elvis305]

This post was originally written by @GantonGunner on airgunforum.co.uk

here is a quick explanation to hopefully help

below the label reads 46560015 7 4.52
always work from the right on the main code
1. the last 2 numbers indicate the year in this case 15 indicating 2015
2. the 2 prior numbers indicate the quality control employee number 00 in this case
3. the 2 numbers before that is the production line employee number 56 in this case
4. the 2 before are the all important die number which on this tin is 46
please note you always work from the right cos if you get to step 4 and only 1 number then that's the die number IE dies 1-9
the 7 below would indicate the batch number
and then finally the 4.52 is the claimed size which is a load of rubbish.

in general the number that matters on JSB exacts it the Die number (please note there was some bad batches in 2015 on various dies)

View attachment 1621

 

[Elvis305]

Great info, I always thought it was just a product code. There always seems to be a discrepancy with the pellet weight/size etc, even the more expensive pellets like QYS when weighed & measured are all over the place.

 

[mike_r1971]

Great post, lots to digest here, thank you.

 

[Flash-MARK]

This post was originally written by @GantonGunner on airgunforum.co.uk

here is a quick explanation to hopefully help

below the label reads 46560015 7 4.52
always work from the right on the main code
1. the last 2 numbers indicate the year in this case 15 indicating 2015
2. the 2 prior numbers indicate the quality control employee number 00 in this case
3. the 2 numbers before that is the production line employee number 56 in this case
4. the 2 before are the all important die number which on this tin is 46
please note you always work from the right cos if you get to step 4 and only 1 number then that's the die number IE dies 1-9
the 7 below would indicate the batch number
and then finally the 4.52 is the claimed size which is a load of rubbish.

in general the number that matters on JSB exacts it the Die number (please note there was some bad batches in 2015 on various dies)

View attachment 1621

So simple once some one explains it.
Thank you very much.

 

[Greg105]

Great explanation thank you

 

[Martin May]

Finally I know what all this means... Thanks alot

 

[Yesrow]

Really interesting, but I just know I will always just grab any tin to hand and moan if they are crap. However I am going to make a point of looking up the info when I have a good tin

 

[Lee S]

This post was originally written by @GantonGunner on airgunforum.co.uk

here is a quick explanation to hopefully help

below the label reads 46560015 7 4.52
always work from the right on the main code
1. the last 2 numbers indicate the year in this case 15 indicating 2015
2. the 2 prior numbers indicate the quality control employee number 00 in this case
3. the 2 numbers before that is the production line employee number 56 in this case
4. the 2 before are the all important die number which on this tin is 46
please note you always work from the right cos if you get to step 4 and only 1 number then that's the die number IE dies 1-9
the 7 below would indicate the batch number
and then finally the 4.52 is the claimed size which is a load of rubbish.

in general the number that matters on JSB exacts it the Die number (please note there was some bad batches in 2015 on various dies)

View attachment 1621

Great info thank you!

 

[SteveT91]

Any decent batches of JSB Exacts out at the moment?

 

[Dan79]

Am I right in saying that the Air Arms pellets are exactly the same?
Spot the difference side by side…..

 

[brightside]

Never knew any of this before. Thanks for the info.

 

[SteveT91]

Die 51 and 50 are ok this year

 

[Ali S]

JSB and AA explained

 

[Damy89]

understood perfectly

 

[Steves100uk]

Thats some interesting information.

 

[hawnet]

This is a topic i would like to know more about, what exactly all these numbers mean, and weight of pellets and dome size and pellet length, and why different guns perform differently with different slugs, what causes the inconsistencies'.

 

[Icedtiger]

Thanks for the info, off to check my tins.

 

[hawnet]

I have watched so many you tube videos now I am beginning to realise that gun barrells like different pellets and thats that really. I have watched bench shooters getting 4 shors within a 5 pence coin then for no reason the 5th pellet goes awry..wind..weight..shooter error..who knows.
I know i will have much fun sorting out my grouping and look forward to it. Starting with Air arms targets.