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PostPosted: Tue Oct 16, 2018 12:07 pm 
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Joined: Thu Feb 22, 2018 8:00 pm
Posts: 16
I have been playing with a sub pal diana 24 and have noticed something strange ... it does not shoot most pellets very well velocity wise, the best I have found are JSB exact match diabolo 8.4 grains at 460-480 fps with most other pellets in the 320- 400 range which is odd because they are all lighter pellets. I took a look at the pellets comparing one to the others and it appears the JSB pellets have a thinner skirt which I think seals the bore better in a low powered gun. I also tried seating the pellets into the bore as I suspect the steep leade into the rifling is allowing some blow by or at least not flaring the skirt properly. The first 2 seated Jsb pellets detonated and didn't read on the chrony after that velocities went between 490 and 509 fps. That was with the pellet pushed about 1/8" into the rifling with the pliers on my leatherman. I'm wondering if anyone else has had similar experiences. Also wondering if anyone can recommend quality pellets with thin skirts I should try in this gun? Crosman destroyers without seating went around 350 fps after seating they went as high as 480 fps is that much of a gain from seating the pellet common?


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PostPosted: Tue Oct 16, 2018 12:17 pm 
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Location: GTA, ON
I think you can try other sized JSB to get some comparison as we can find JSB's in 4.48 to 4.52 difference sizes...

For the 'thin skirt', what impressed me before was the RWS super point... I found the skirt of them is very easy to be bent. Just use your two fingers, much easier than squeeze a lemon slice, you can just bend it... So I have to handle them gently in order not putting a shape changed pellet into the breech.... To compare, the RWS Hobby is much harder...

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PostPosted: Tue Oct 16, 2018 1:58 pm 
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Joined: Wed Jan 05, 2011 12:35 pm
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Location: P.G. B.C.
Skirt thickness is important, but YepYep touched upon on another important trait - alloy.
Predator pellets as an example, are not as soft as other makes.
Colour is one way of distinguishing alloy, but is not concrete. the lighter the colour, generally the more antimony or
tin included in the pellet's compositon.
Using YepYep's squeeze method might be the best method of testing as it also addresses skirt thickness to some extent.
Head & skirt size seems to be the culprit in air-loss in your rifle RBForge.
Make a pellet seater to seat the pellets at exactly the same depth, each time and try for accuracy. Accuracy, afterall, is the final
test.

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PostPosted: Tue Oct 16, 2018 4:26 pm 
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Joined: Tue Sep 11, 2018 1:02 pm
Posts: 31
Location: Hamilton Ontario
For the pellet pusher try aaa battery, cheap and easy to find.
Try some more pellets and see what your rifle likes the best,
Each rifle will behave like a spoiled child at supper time, a picky eater is a picked eater.
Best of luck brother


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PostPosted: Tue Oct 16, 2018 6:54 pm 
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Joined: Fri Jan 22, 2010 1:17 pm
Posts: 1749
Location: Kingston, ON
I have found the best pellet in the majority of my (all non PAL) rifles is the JSB Exact RS. Probably on account of a combination of the soft alloy, skirt thickness and light weight and I have found this to be the case in .177 and .22. Of course a nicely shape leade and proper breach seal are also very important.

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PostPosted: Wed Oct 17, 2018 6:19 am 
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Location: GTA, ON
+1

The JSB RS is really a King for sub 500 air guns! I like them too!

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Izzy 46M
HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
P3+2x20 Kit Scope
HW40+Extender
HW45+Grip panels from Russia
P1322 with walnut forearm


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PostPosted: Wed Oct 17, 2018 10:18 am 
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Joined: Wed Jan 05, 2011 12:35 pm
Posts: 5878
Location: P.G. B.C.
I found RWS S10 Match to be extreemly accurate to 25 yards in my HWB 150.

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Daryl


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PostPosted: Wed Oct 17, 2018 10:25 am 
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Location: GTA, ON
Yep ~ RWS R10 is my love too ~ :D

+1

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_________________
Izzy 46M
HW30 Stainless Steel + Discovery 40mm Scope
HW35 Walnut + Hawke 40mm Scope
2240+14" barrel/Williams peep sight
Camo Chaser long barrel rifle kit
P3+2x20 Kit Scope
HW40+Extender
HW45+Grip panels from Russia
P1322 with walnut forearm


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