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My new (old) little .177 bullpup. |
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Pauly5
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Posted: 11 Aug 2023 at 1:25am |
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Why don't you put some glass behind your next test, or metal flashing to see how big the dent is.
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RangerPete
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Joined: 19 Apr 2023 Location: Cambridge. Status: Offline Posts: 1035 |
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Posted: 11 Aug 2023 at 12:10pm |
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Hummm… that’s not a bad idea.
Where can I get some scrap pieces of glass from? Here is a pic of a pigeon teasing me, and the glass roof up above it 😂😂😂
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Walk quietly, but carry a big stick.
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kruzaroad
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Joined: 03 Jul 2022 Location: Hastings 4 now Status: Offline Posts: 2685 |
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Posted: 11 Aug 2023 at 12:31pm |
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Should have popped it strait thru the breast. There's a lot of pellet slowing meat there. Breast bone, crop if it is full, feathers, then the heart etc, but they arn't that tough.
Personally I'd have thought indoor shooting would be for a pumper. I've shot sparrows in the.woolshed with. Mine at 5 pumps and not had them go right thru. Edited by kruzaroad - 11 Aug 2023 at 12:32pm |
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Pauly5
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Posted: 12 Aug 2023 at 3:08am |
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I used that same gun in a shopping centre for shooting sparrows. It had a big glass dome, so similar situation. I got a couple of small panes of off cuts from the local glass supplier for free.
But like you, I still didn't want to risk it so I only shot at something that had a good back ground. For that pigeon there could you have moved position so a metal frame was behind it?
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kruzaroad
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Posted: 12 Aug 2023 at 4:59am |
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Looks like it Pauly.
Shooting from the right of the picture and further back would put the center beam and two arms off it as back drop. I'll see if my mate on farm will let me pop a pidgeon and if so, I'll do a few shots into it and work out the fpe needed at target to not over penitrate which should put you in the ball park for trials. |
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RangerPete
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Posted: 12 Aug 2023 at 12:09pm |
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That beam behind it is smaller then it looks 😂😂😂
And any sort of pellet path deviation inside the pigeon is going to result in a small change of the exit pellets trajectory… hummm 🤔 I keep telling my self that glass should be able to withstand a good hail storm, so should be at least 5mm thick…??? But still safer to wait for another day when I’ll catch him in a better position. Be interested to know what your FPE findings are Kruza. |
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kruzaroad
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Posted: 12 Aug 2023 at 2:50pm |
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If I get pidgeon. Hopefully tomorrow or the one in tree falls out in overnight wind.
I'll be doing it in .22 out of 1322 so once I have the fpe and pellet at the distance, you'll have to do a reverse calculation for .177 using pellet weight and fpe at distance to get muzzle enerdy required I'll start low till get desired penitration then work up to pass through. Probly start at midrange of the required power for penitration to pass through as .177 tends to punch through better than .22 |
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RangerPete
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Posted: 12 Aug 2023 at 5:38pm |
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Ja, I think a .22 with its larger frontal area is able to transfer/dump more energy into the target, resulting in less penetration.
This would be an interesting test to do, side by side… If we compared two theoretical pellets, a .177 and a .22, both at the same power level, let’s say 5fpe, they would have stats something like this… .177 JSB exact weighing 8,44gr @ 517fps gives 5.01FPE A .22 JSB exact weighing 15.89gr @ 377fps gives 5.02FPE Different size pellets, huge difference in weight (basically double), and a difference in velocity, BUT both projectiles are carrying the same amount of kinetic energy. In theory the .177 with its smaller frontal surface area should “slip through” the pigeon easier, requiring less force to travel through the medium, taking longer to transfer its energy into the target, resulting in further penetration. The .22 on the other hand, with its larger frontal surface area is going to meet more resistance from the pigeon, find it harder to push through the tissue, use more of it’s available energy to keep forward momentum and there for transfer energy into the target quicker, resulting is less penetration then the .177… In theory. To express that theory in a different way, a .22 projectile should require more FPE to penetrate to the same depth with in a given target, then a .177 projectile would require to penetrate to the same depth. Hummm… 🤔 Maybe we should be using low powered .22’s for close range pigeon work (where over penetration is not desirable). 🤔 Definatly more testing to be done. |
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kruzaroad
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Posted: 13 Aug 2023 at 7:21am |
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Won't be no testing this weekend. I've had two hang in the trees, missed a couple of shots and they are spooky.
( Ive shot them for food a couple of times. They clue up fast nowadays) So unless one falls out of tree, I'm leaving them till next weekend. |
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RangerPete
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Posted: 15 Aug 2023 at 5:24pm |
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I happened to be out for a walk last night when I met a bunny.
I happened to also be carrying little Elly… Unlucky bunny…
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RangerPete
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Posted: 26 Aug 2023 at 7:42am |
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I’ve heard some good things about the Gamo 10X hollow point pellet, 7.56gr, so I thought I’d try some.
Put them through my little Elly with some other knows for comparison. I had her set on low power because I’ve been doing some pigeon work, so I just left it there as I could only test at 10m at home anyay. Shot 5 shot group of the Gamo 10X, 5 shot group of the Air Chief target flap point 8.18gr, and 5 JSB exacts 8,44gr as a control group.. They did all right, I’d call it one ragged hole, but as usual nothing compares with the exacts 😉 What I found interesting was even though there is almost 1gr weight difference over the 3, the poi is identical for all of them. Nice to know if I’m ever in a pinch anyone of them will still be dead on 👍🏻
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RangerPete
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Posted: 05 Sep 2023 at 6:57am |
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I’m trying to build a website at the moment, and I needed a “wow” photo to show the kind of pest control that can be achieved if the rabbits are around.
In the afternoon I checked the balistic calculator out to 60m, in a strong side wind 😡. I hate wind. Started with the nikko stirling 6-24x50 FFP, wanted to check it’s zero out at 60. Almost packed up before I had even started with that hard blowing side wind, then I thought to my self, use it as a training excersize, because I have very little experience shooting in strong wind, it just frustrates me so I usually go home 😂. First few shots were frustrating. At 30m I was aiming off by 6cm. Aiming for the middle swinger and hitting the one next to it! At 60m it was worse. Managed to work out the hold over and how far off to hold for the wind and got a decent 3 shot group at 60m Then switched to the Pard DS35. The balistic calculator worked out the drop correctly, and I had to hold off for the wind, but managed to get two shots on the spinners at 60m. Aim at the big one and hit the one next to it… 😂😂😂 ![]() ![]() I was actually quite chuffed with my self for beating the wind, so before it all went south I decided to call it on the spinners and go look for some rabbits. I had some work to do if I wanted to get that “wow” pic. Started at 2pm, walking slowly around and talking quietly to the horses, didnt see a rabbit for an hour! Eventually at around 3 they started slowly appearing and my shooting session started. The later it got the more rabbits came out. I managed to shoot a bunch, and then about another 8 that I couldn’t find. 5 hours later and sick and tired of climbing through electric paddock fences to retrieve dead rabbits, I finally got my photo.
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RangerPete
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Posted: 05 Sep 2023 at 6:59am |
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Check out this little cream puff!
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Pauly5
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Posted: 05 Sep 2023 at 7:09am |
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Gee, that's impressive Pete. Just goes to show you don't need high power, just placement.
I have a wind chart calculation I will try and dig up. You will find most FT or HFT shooters are excellent at this. Even using a bit of wool off the end of the gun, and using angle to judge the wind speed at the muzzle can help, especially if you don't have grass or trees to gauge off.
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Billbobnz
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Posted: 05 Sep 2023 at 8:05am |
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That's awesome Pete, nice work
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