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Not necessary. I'll get some barrel lapping compound and lap those corners with a pencil eraser in a 1/4" drill. That will make it smoother. Thanks for the advice. I was afraid to do that, with your advice I am more comfortable. I am certainly seeing a difference and intend to continue using the device. My observations agree with Mr. Peacock's. There is a "dip" on the CtC graphs I make which shows there is some "windage" allowable."Pelletgage"Oldspook said:
The problem with the gauge is that the edges of the holes in the gauge are LASER cut. They are very precise and they are very square. Depending upon the pellet, it can be a nightmare to figure out how much pressure is enough and how much is too much. The lead, even hard lead like in the CPHP, tends to snag on the corner of the hole. It would be nice if the engineer could find a way to radius edges of the holes or even to somehow make them into a bit more of a funnel so that round nosed pellets could more easily find the center and either fall through or fail
You are quite right, the cut edges of the apertures in the gage plate are sharp. I use a case edge chamfer tool to reduce this, by hand (every aperture, both sides). If you like, I will send you one with more chamfer. You are also right in that it requires some technique. I hope you see an improvement with practice.
Your data look pretty interesting. Joe Peacock (who makes the plastic parts for Pelletgage) has an indoor range, and shoots sorted pellets with a Thomas benchrest setup. He told me last week that "4.53 shoots best but the 4.54’s and 4.52’s shoot nearly as well, maybe off 2x’s out of 75 shots compared to the 4.53’s. I have 1,149 targets I have kept and recorded data on".
I believe that if you have consistency of +/- 0.01 mm in your pellets, the benefit of sorting is small, but that you often see more than that in a tin, and that it is a good practice to take a sample of 40 pellets from a new tin, and measure to see if you have the consistency and mean diameter that will work well with your barrel. If so, that could be all you need to do. If you are shooting in a match, you might go as far as sorting all the pellets needed for the shoot.
I've been thinking some about your results and the idea that head size being too large isn't as significant as being too small. The reason I've been thinking on it is that my graphs are mostly coming up looking more or less like the one I linked at the top of the page. I am working with springers also. We know that the pellet gets pushed into the leade about the time that the temperature spikes during piston travel. It seems to me that temperature would spike higher and therefor working pressure would spike higher as well if the piston encountered more resistance while forcing the pellet to engrave on the rifling. The opposite is true of pellets which are loose in the leade. That (or something else I suppose"nced"There may be an issue with the old Beeman sizers (I did own a couple) in the sense that when I used the sizers the pellets were "full sized" (both head and skirt reduced to the same dimension). My home made sizer does swage the head a bit but also expands the skirt a bit as it "rounds out" the skirt.
I'm planning to be at the March 25 match at Mt Pleasant and hope to see you there!"LIVIT"This is some of the knowledge I have been trying to find. I am going to be shooting FT with the THAGC, starting the next meet. As a lot of subjects there seems to be very mixed opinions on what is correct in sizing. I have seen; don't bother its a waste of time, size just the head, shape and size just the skirt, or shape and size both. It would make sense to me, if the skirt was sized larger than the head. Less contact on rifling, maybe a bit more speed along with accuracy. Or is the skirt to soft, which would cause inconsistency due to blowouts. I am a bit confused, appreciate some help here.... Dale
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15 out of 20 CPLs through a 3/4" killzone at 50 yards......
the washing solvent and was delighted to see that the excess "parting compound" was absent and here is the solvent after soaking and stirring the pellets.........
That case of CPLs was clean so I ordered several more cases and here was my stash in June 2015......
Sketch of my sizing die...........
Sizing die........
I have not opened the picture. Climbs any unnecessary ads instead of a photo.
Thank you. Now you can see the first pictures.This is the bottom of the saizer. On the stump there will be a bullet, and on top of the bullet the second part of the sizer will drop.<font style=vertical-align: inherit;><font style=vertical-align: inherit;>nced</font></font>I'm a victim of the PhotoBucket charge where my posted pic links were blocked unless i paid a $400 fee for the privilege of posting pics as 3rd party on web sites. After that I canceled my PhotoBucket account and opened up a couple new photo hosting accounts. I've been able to recover about 600 pics that were connected to PhotoBucket from backups and I'll try to replace the deleted pics as i find them.![]()