New JSB Simply Airgun Pellets for Practice & Plinking

[kevinweiho]

The RWS Basics may have a real contender...


https://hardairmagazine.com/news/new-js ... -plinking/

[william]

Of course: YOUR RESULTS MAY DIFFER.

Several years ago (the things one does when young and foolish) I did extensive chrono measurements using the pistol I was shooting at the time, a Benelli Kite. I can't prove it, but I think it's reasonable to believe that consistency of velocity is relatable to group size. I shot multiple 10-shot series, and JSBs delivered the best stats every time - no exceptions. One series had an extreme spread of under 6 fps and a standard deviation under 2!

So impressed was I that I bought a lifetime supply (really - multiple cases, not sleeves) from Bori at TGAG. My only regret since then is that my performance hasn't lived up to the pellets.

[Rover]

Too bad they are not offering lightweights in this series.

The thing that appeals to me is that they put the foam pad in the pellets. For my shooting, I count the pellets into the lid (with foam) and then shoot a string. The pellets don't roll around, are easy to pick up, and are protected as well.

[Gwelo]

Kevin, agree these might make an interesting comparison to the RWS Basics. I would probably buy a tin or two but they don't seem to be available in the US yet, no pricing either. Can you get them in Costa Rica? Agree with Rover that the lightweight 7.33 and 7.72 grains need to be added to the lineup.

Interesting test results with my new to me EVO 10 full size comparing RWS Basic 7.0, RWS Meisterk 7.0 & 8.2 and JSB Match 7.72 (Green Tin), all 10 shot groups:

Basic 7.0, avg speed: 514.5, ES: 10, SD: 3.95, Ft #'s: 4.12
Meisterk 7.0, avg speed: 535.5, ES: 5, SD: 1.5, Ft #'s: 4.48
JSB Match 7.72, avg speed: 518.1, ES: 4, SD: 1.49. Ft #'s: 4.62
Meisterk 8.2, avg speed: 479.5, ES: 8, SD: 2.29, Ft #'s: 4.2

What stands out to me is the Meisterk's 21 fps speed increase over the Basics, even though they weigh the same.
Also the JSB's speed being slightly faster than the the Basics but weigh 10% more.

I can't equate any of this to accuracy but, like william, feel that consistent velocity is a good thing. I shoot all of these with about the same results.
I do shoot more of the Basics than anything else. For the $$ they have to be a great choice!

[Rover]

"What stands out to me is the Meisterk's 21 fps speed increase over the Basics, even though they weigh the same."


I find that interesting, too. Maybe they would work well in the somewhat feeble FAS 6004. I never noticed that in my somewhat limited chronographing, but I may not have tested them. In any case, I did test the lightweight JSBs for accuracy and they were the most accurate pellet in my tests every time.

[Gwelo]

Not surprised the JSBs were the most accurate given their consistent specs. Do you recall which Lightweight was most accurate, 7.33 or 7.72?
I weighed 20 pcs of the 7.72s, 10 ea from two different tins, collectively they avg'd 7.725g. Pretty much as advertised.

Weighing the same sample of the Basics 7.0s revealed 7.197 avg weight which somewhat explains the velocity discrepancy. Seems they should be marked as Basic 7.2!

The Meisterk 7.0s were also very consistent at 6.973 avg for the same sample size.
Rover, did you test these also? How did they fare?

I need to buy some more of the JSB lightweight 7.33s to test in my new pistol!

[Rover]

I don't remember for sure, but I think the JSBs I tested were 7gr. I don't see that weight anywhere, though.

Anyway, I once tested Basic, Meister, and R10 (all 7gr) against one another. The thirty shot groups got smaller as the price increased, but the difference between best and worst was almost unnoticeable. I continued using Basics, and I still do.


Oops! I did a little snooping and found that the pellets were 7.3 gr. (nominally), but I said they were 7.5. I must have weighed them.

[william]

"...groups got smaller as the price increased"

I've never tested group size with an AP because I never felt confident in being able to clamp the barrel or cylinder properly. However, my velocity testing yielded the opposite result - lowest spreads from the cheapest (JSB, and boy were they cheap) and the greatest variations RWS R10. Other brands / grades fell somewhere in between. H&N performed very well, but not as well and not as cheap as the Czechs. I found no difference whether the H&N had their label or were private-labeled for somebody else.

[Gwelo]

Interesting that JSB Match has two Light Weights.

I have no way to test accuracy either. Think it's apparent that weight has a significant effect on velocity. I will test today to compare.

JSB Lightweight.7.72.jpg (11.1 KiB) Viewed 4607 times

JSB Lightweight.7.33.jpg (9.15 KiB) Viewed 4607 times

[Gwelo]

Velocity/Weight for RWS Basic 7.0, RWS Meisterk 7.0 and JSB Match Light Weight 7.72. Shot thru Steyr EVO 10 long Barrel

Basic 7.0
Wt Vel
7.20 515.3
7.22 519.5
7.19 518.1
7.22 516.7
7.20 520.3
7.26 519.5
7.46 504.8
7.42 510.3
7.26 510.4
7.31 517.9
Avg 515.3
ES 15.45
SD 5.09

Meisterk 7.0
7.06 540.0
7.00 541.9
6.89 551.7
6.97 549.8
6.97 545.9
6.94 544.6
6.97 546.5
6.99 543.3
6.97 548.3
7.00 551.4
Avg 545.8
ES 11.69
SD 3.60

JSB Match 7.72
7.73 524.5
7.82 518.4
7.70 523.9
7.70 522.9
7.77 519.5
7.79 520.2
7.63 528.8
7.73 521.1
7.74 523.2
7.80 516.8
Avg 521.9
ES 11.99
SD 3.31

[kevinweiho]

Kevin, agree these might make an interesting comparison to the RWS Basics. I would probably buy a tin or two but they don't seem to be available in the US yet, no pricing either. Can you get them in Costa Rica? Agree with Rover that the lightweight 7.33 and 7.72 grains need to be added to the lineup.

Gwelo, there are no JSB retailers here in Costa Rica. There is a Cometa airgun representative who also sells “Cometa” pellets (rebranded JSB). I don’t see them here neither, in Europe and parts of Asia they’re already selling them.

JSB virtually makes more pellets for rifles than for pistols, that might be the reason for the Simply offerings in “heavy” weight. The Basics are my favorites as well, having a very good cost-performance ratio.

It’ll be interesting to do a test when they hit the shelves in the U.S.!

[Azmodan]

a while ago i tested some brands for weight consistency:
https://youtu.be/C4KeVMzyuh0

[Gwelo]

Testing weight sorted pellets showed the specs tightening up as one would expect. Looking for JSB Light Weight 7.33s here in the US turned up nothing, plenty of 7.72s though. Did find some 7.33s, should be here in a couple days. Still no sign of the JSB Simply Pellets.

RWS Basic 7.0 (15 shots)
7.15-7.19g
513-522 fps
ES: 9
SD: 2.5
MV: 521

RWS Meisterk 7.0 (14 shots)
6.95-6.99g
522-532fps
ES: 11
SD: 3.2
MV: 533

JSB Light Weight 7.72 (16 shots)
7.70-7.74g
508-516fps
ES: 8
SD: 2.1
MV: 516

[Rover]

Gwelo, I got some 7.33 JSBs from Airguns of Arizona. There WAS some confusion due to the two different weights. I would call.

[Gwelo]

Thanks Rover, AofA website shows the 7.72's in stock at $16.99/500 (buy 4, get one "free") but no 7.33's. No choice as to head size, you get what you get. I found the 7.33's at $9.40/500 in Europe, choice of 4.49 or 4.50 so ordered some of each from there. Needed some other stuff so combined shipping wasn't bad at all. Should be here Tue.

[Rover]

I told you to call.

[Gwelo]

I may not have been clear. I placed my order last Wed, shipped Thur, due tomorrow, so no reason to call.

[william]

I may not have been clear. I placed my order last Wed, shipped Thur, due tomorrow, so no reason to call.

Reason or not, Rover TOLD you to call. Watsamatta you?

[Gwelo]

I may not have been clear. I placed my order last Wed, shipped Thur, due tomorrow, so no reason to call.

Reason or not, Rover TOLD you to call. Watsamatta you?

Well, it was Sunday, they were closed. Yet another excuse. What IS the matter with me?

[Gwelo]

Ok, I called AofAz and they do have the 7.33g Light Weight JSBs even though their website only listed the 7.72s.
Guess Rover has an “I told you so” coming.