.177 Pellet Gauge Head Size Checker

kruzaroad wrote:

Like the principle of keeping the skirt larger. So how much did it tighten up your groups. Does it actual remove the lead or does it compress it into size.

I think the idea is consistency, so same head size into the bore for close enough to same friction - less velocity drop from tighter fitting pellets etc. really just trying to eliminate every 1% of possible inconsistency.

I dont know how the Robb one works but I have a small one that you drop a pellet into and push it through - it will basically just shave the soft lead if its oversized, or squish it a little..

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Too many..

well after head sizing 1800 odd AA .177 pellets today, with a vernier, I'm over it.

How did that pellet sizer work you were getting in from the UK work out Myson?

I find sizing makes a difference in the sig. May be because it's unchoked. 4.50mm, 4.49mm definitely shoot better groups than 4.52mm and 4.51mm.

Will try 4.48mm and 4.47mm now I have an abundance of them measured. Have a enough 4.46mm and 4.45mm to see if it's getting far enough off spec to affect groups now too.

But God I don't want go thru that again. Thankful hades 22 only come in 250 pieces tins. That will be the next mission, 400 odd. Gaakk.

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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I do not think i have the equipment to do that.

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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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