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.177 Pellet Gauge Head Size Checker |
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nunga 
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Joined: 09 Mar 2013 Location: Pukekohe Status: Offline Posts: 1082 |
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 Posted: 26 Sep 2024 at 4:03am |
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What size are you after? I make a lot of silver wire and i have a few drawplates for this. I have found that hole number 16 on my 3-6mm drawplate is perfect for 4.52 head size on my pellets. And im pretty sure i have used this for .22 as well.
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2nd place HP springer - WFTF World Championships 2014
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RangerPete
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Joined: 19 Apr 2023 Location: Cambridge. Status: Offline Posts: 1025 |
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Posted: 26 Sep 2024 at 6:17am |
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Nunga, 4.52mm is my preferred size in .177.
I’ve always thought it would be nice to have a guage like the pic at the beginning of this post to just drop a pellet through and know what size it is. Would you be able to make a piece of metal with a 4.52mm hole in it? |
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Walk quietly, but carry a big stick.
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nunga
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Posted: 26 Sep 2024 at 8:03am |
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I do not think i have the equipment to do that.
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2nd place HP springer - WFTF World Championships 2014
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ae25
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Joined: 12 Sep 2024 Location: franklin Status: Offline Posts: 20 |
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Posted: 07 Oct 2024 at 4:59am |
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Pete, I could help with that. Even do a range from say 4.47 - 4.57
holes if helps. Add a small lead in radius so they dont get shaved.
But question from a target noob.. the tail end are about 0.2mm larger
(on the slugs I have) than the head. Is the pellet being pushed through
to reduce the tail down to the head size or are you just checking the
heads?
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RangerPete
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Posted: 07 Oct 2024 at 7:07am |
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Hi ae25,
The first picture posted by Myson at the top of this thread is exactly what I'm looking for. It would be a devise intended simply to gauge the head size of a pellet, not to resize the head or the skirt. So the holes would be specific sizes, for example 4.52mm, and if the head is smaller than 4.52mm it would fall through the hole, but as you have correctly said the skirts are usually a bigger diameter than the heads, so the skirt would not be able to pass through the hole and the pellet would be left "hanging" in the hole by the skirt. The pellet would then need to be picked up and removed out of the hole, (not pushed through). You could then try the same pellet in the 4.51mm hole, if the head falls through it is smaller than 4.51mm, if it dosent fall through you know it is a 4.52mm This would make head sizing a tin of pellets so much faster then having to use vernia calipers and measure the diameter of every pellet, one by one. Any chance you have the expertise and tools to produce a gauge like in the first pic of this thread? |
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kruzaroad
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Posted: 07 Oct 2024 at 7:18am |
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Tillys gun stock has a pellet gauge he uses and it's basically a tapper slot in a block of metal with sizes marked of I between. I'll see if I can find the video.
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ae25
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Posted: 07 Oct 2024 at 9:40am |
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Gotcha. Yep can make. I run a 3axis cnc mill which cuts accurately. I'd suggest a narrower piece of stainless flat bar with the middle pocketed out to 2mm thick. then end plates screwed on to hold it off the table? I'll knock up a drawing and go from there.. see what you think
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RangerPete
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Posted: 07 Oct 2024 at 9:54am |
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Here is a good article about using the exact pellet gauge that Myson posted a picture of at the start of this thread.
https://www.pyramydair.com/blog/2015/05/testing-the-177-pelletgage-part-1/ And here is a picture of a different type of pellet gauge. This would be much quicker to use, but I’m not sure how the wider skirt would effect or not effect the head measurement 🤔 
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RangerPete
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Posted: 07 Oct 2024 at 10:01am |
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Ok, so this is supposedly how a pellet slides through this “drop in” type of gauge. The side view diagram shows that the skirt slides through a cut out area, so it’s only the head that gets measured.
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ae25
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Posted: 07 Oct 2024 at 10:51am |
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I'd think the hole gauge would be more accurate as it measures roundness rather than two points of contact. If the slug is out of round then the diameter measurement will be wrong on the slot gauge
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RangerPete
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Posted: 07 Oct 2024 at 11:42am |
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Agreed.
Any chance you could make something with holes in it like that? |
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ae25
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Posted: 07 Oct 2024 at 12:44pm |
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Yes. Found some 50x3 s/s flat bar at home so ill make something similar for ya. Pellet sits below the bottom with the 3mm stock thickness so can push it back up and grab pellet from the top. assuming that's how its done. though a pocket on the top would help stop dropped slugs rolling off too.   |
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RangerPete
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Posted: 07 Oct 2024 at 3:12pm |
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Awesome thanks,
Looks like it should be perfect 👍🏻 |
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ae25
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Posted: 08 Oct 2024 at 1:22pm |
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Could have both styles in one. But youd have to hold the pellet whilst sliding down the slot. Would that be practical?  |
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RangerPete
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Posted: 08 Oct 2024 at 3:02pm |
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Looking good so far 👍🏻👍🏻👍🏻
I think the holes would be easier to use as well as more accurate than the “slide”. Probably only need the holes. |
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