Tumbling pellets?

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bouddha
Posts: 13
Joined: Mon Oct 03, 2016 4:00 pm

Tumbling pellets?

Tue Nov 01, 2016 10:15 pm

Image

H&N 19.09 grain pellets, thru a GAMO .22 Hunter. Is this normal?
Lotsa .22LRs, KIDD, CZ, Keystone & XP100 .223 by John Beanland. 3 Sigs, 522, 556xi, P-220

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Raj
Posts: 2005
Joined: Sun Feb 15, 2015 9:36 pm
Location: Rugby

Re: Tumbling pellets?

Tue Nov 01, 2016 10:38 pm

No - not normal at the optimum power setting. What power is your Gamo putting out? I can see from your location that you are Stateside ... where you dont have the same restrictions like we do here in the UK. :)
“It's the Indian, not the arrow"

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bouddha
Posts: 13
Joined: Mon Oct 03, 2016 4:00 pm

Re: Tumbling pellets?

Tue Nov 01, 2016 10:51 pm

.22 cal Hunter is rated 975 FPS. It shot lighter weight pellets fairly well (half inch @ 20 yards occasionally. I'll probably give this to my neighbor, just curious. My TX200 is much better in all areas, of course, and I swapped spring & parts to lower it to 11 FPE.
Lotsa .22LRs, KIDD, CZ, Keystone & XP100 .223 by John Beanland. 3 Sigs, 522, 556xi, P-220

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TenMetrePeter
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Joined: Wed Jun 29, 2016 5:40 pm
Location: Luton Beds UK

Re: Tumbling pellets?

Tue Nov 01, 2016 11:43 pm

if the pellets really were tumbling and going through the paper sideways they would be flattened against the backstop sideways. check the lead waste and I bet they are normal and circular. It just looks like low speed and not the best short fibre target paper.

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bouddha
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Joined: Mon Oct 03, 2016 4:00 pm

Re: Tumbling pellets?

Tue Nov 01, 2016 11:52 pm

Target was hung in front of backstop by 6 inches or so. Targets are also regulation benchrest targets, chosen for their ability to showcase accurately bullet strikes.

Image

Not the best picture, but this is the TX200 in .177 taken the same day.
Lotsa .22LRs, KIDD, CZ, Keystone & XP100 .223 by John Beanland. 3 Sigs, 522, 556xi, P-220

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Raj
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Joined: Sun Feb 15, 2015 9:36 pm
Location: Rugby

Re: Tumbling pellets?

Wed Nov 02, 2016 7:35 am

And what is the crown looking like? Better still, if you could catch a discharged pellet with a cloth sheet at distance and inspect the rifling marks, there might be a story there.
“It's the Indian, not the arrow"

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TenMetrePeter
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Joined: Wed Jun 29, 2016 5:40 pm
Location: Luton Beds UK

Re: Tumbling pellets?

Wed Nov 02, 2016 8:04 am

Try to catch pellets to check rifling etc like Raj says but also check the ones hitting a steel plate at that distance. If they are round and flat they are not tumbling. If like mushrooms they are low power.
The chances of every pellet hitting the paper exactly sideways is pretty small. If I saw that last night at our 10m club I would say well down on power and needing new seals. Slow pellets dont cut they tear, Are you sure it is putting out 975 fps? Could kill a raccoon with that at full rated power!

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Axelrod
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Joined: Sun Feb 15, 2015 3:44 pm
Location: Almeria Spain.

Re: Tumbling pellets?

Fri Nov 04, 2016 2:16 pm

Fps given by gamo are with the lighest pellet possible in order to sell the gun. I live in Spain and am surrounded by gammo. I have yet to see one that produces the figures quoted on the box. The pellets you are using will be at least twice the weight of the pellets the gun was tested with and may be more than that. Low velocity and lower spin rate all lead to what you are seeing on your target. dave

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bouddha
Posts: 13
Joined: Mon Oct 03, 2016 4:00 pm

Re: Tumbling pellets?

Sun Nov 06, 2016 5:27 pm

Thanks, Dave. That was my suspicion.
Lotsa .22LRs, KIDD, CZ, Keystone & XP100 .223 by John Beanland. 3 Sigs, 522, 556xi, P-220

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