Pellet testing

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Posted: 24 Jan 2024 at 3:16pm

Had a crack at 80m but wind is just too temperamental.
Had a thigh bone on top of breast bone, pellets kept hitting to side of thigh bone try again later if wind dies down.
Jsb/cometa exact heavy 10.34gr
80m.
Sig. 177
data per AA test.
Bone it went through is really thin like two playing cards thick.
Deformation not worth mentioning.
2 pellets caught in 4th layer one in 5th.
20m for comparison.
The grooves are filling out nicely with the skirt and the lands are just marking the heads so that's all good.

kruzaroad

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Posted: 24 Jan 2024 at 1:30pm

Jsb/cometa exact heavy 10.34gr
20m
Sig .177
Muzzle energy and stuff on AA test. Same weight pellet.
Stuff on pellet head bone it carried into gel.
Stopped 6 layers in.
Two shots fired, one just nicked bone and passed all way through gel.2nd hit square on and shattered it. Chicken thigh bone.
Try 80m when wind and heat have died down.

Edited by kruzaroad - 24 Jan 2024 at 3:35pm

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Posted: 26 Dec 2023 at 11:06pm

https://youtu.be/Ibc6STL52wo?si=CQW51nb4ecqZSRvh

Using plumbers putty for pellet trap.
Good trap too. Could suit those into testing for expansion.

Edited by kruzaroad - 26 Dec 2023 at 11:14pm

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Posted: 23 Dec 2023 at 9:32am

well I had written a blurb with facts and figures, but got lost between changing screens. So f it cant be bothered rewriting.

Basic out line. I think air rifles will like a type of pellet by a supplier more than others. Probly others of that weight and style. But my guns have a definite prefrance. (hence where facts and figures were)

I'll keep testing slowly. Would really like to see other ppl doing it as well.

I'm not going to cover a lot, more the better data set we have.

CHICKEN BONES ARNT HARD TO GET! You'll find them at the end of every roast chicken dinner.

Don't have gel? Try a couple of milk bottles filled with water tapped together. But really I could do the help, and I'd like to see other results from differnt pellets at differnt fpe.

Have been toying with idea of hollowing out a alloy and replacing with lead. I have a sneaking suspicion that the lead will turn into a shower of fragments as it punches through the alloy on contact with the target.

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Posted: 22 Dec 2023 at 9:38am

You’re doing great work testing pellets. Keep it up.

Pellets and airguns are strange bedfellows. I’ve seen airguns that like one particular brand but when the batch changes they hate them. A good example is my FWB Sport. It absolutely hated JSB then this year I got a batch manufactured in 2022 and it just loves them.
My HW97 loved JSB dated 2018 but with the 2022 batch I couldn’t hit a barn door at 10 paces.
I know guys who swear by AA. More likely it’s just a particular batch their gun likes rather than the brand.

Edited by Declan - 22 Dec 2023 at 12:35pm

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Posted: 22 Dec 2023 at 7:05am

or as they change dies for runs of differnt pellets brands , they just adjust the metal mixtures for the lead wire for that run.

I cant see some one like fx or air arms developing a pellet/slug to expand or deform a certain way, then going to jbs who say, yep not a problem but you can't have that deformation as you have to use our mix of lead, even though we can mix it to your specs as we produce our lead wire.

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Posted: 21 Dec 2023 at 10:20pm

I do t think the exact will be any softer then the AA.
I know JSB claim they use separate and different dies for the AA pellets, so they MIGHT be ever so slightly different head or skirt size, but I don’t believe JSB melt up different batches lead with different ratios of tin and Antiminny for different customers. I recon they use a standard recipe, melted in huge caldrons and make hundereds of tons of lead wire which is used for any and all pellets they produce.

Walk quietly, but carry a big stick.

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Posted: 15 Dec 2023 at 1:18pm

did 80m with a chicken breast bone taped to gel . Which in turn was taped to 11mm thick pine skirting length. Blew thew skirting.

2 shots passed strait threw, where the layers weren't full near the edges.

Anything labeled B is the pellet that hit bone . Others caught in gel only.

The other 4 of the gel pads were facing gel towards shooter.

These pellets in my view are simply a hole punch. I've not seen any expansion results that impress me.

Doesn't impart any energy dumping in soft bone or tissue.

I still find it a good pellet in this gun. But would seem a bit harder mix of metal than I thought.

Got a tin of exact, wonder if they are softer.

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Posted: 14 Dec 2023 at 8:25pm

same set up as above.

Made another 4 layer gel pad taped one either side of milk bottle full of water,10m, passed strait through.

Made a 8 layer gel target. 124 grams, 50.40mm thick.

37m just sitting on a fence post, was still passing strait through.. Gel was bouncing a foot back but not with any force.

So got a chicken thigh bone taped it horizontal in center of gel block, thinking it would deflect up or down.

Target: 15m / 16.4yards

Velocity at target: 890. 27fps / 271.35 m/s

Energy at target: 18.13ft.lb / 24.58j

Pellet stopped 6 layers in

Edited by kruzaroad - 15 Dec 2023 at 8:56am

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