303-25 Dry Patching Technique

[303Guy]

Someone ... [smilie=1: put me up to dry patching (even though I thought I was doing fine with wet ones).:roll:

Well, you can imagine trying to wet patch teensy 25 cal cores right? So, this is what I came up with (spent my whole relaxing Sunday doing it - great fun!)

http://i388.photobucket.com/albums/oo327/303Guy/MVC-415F.jpg
The patch and the core in a base deburring/sizing tool.

http://i388.photobucket.com/albums/oo327/303Guy/MVC-417F.jpg
The patch dry wrapped and the PPCBoo turned around using the deburring tool as a holder.
At this point the skirt gets 'twist crimped' - dry.

http://i388.photobucket.com/albums/oo327/303Guy/MVC-418F.jpg
Here the 'other bit' has been pressed over the boolit base. The punch thing is in front.
The punch thing gets a drop of water on the tip then gets inserted down the 'other bit' where the water soaks into the 'twist crimped' patch tail which then gets flattened.

http://i388.photobucket.com/albums/oo327/303Guy/MVC-419F.jpg
Here the boolit is about to be ejected with its tail flattened.

http://i388.photobucket.com/albums/oo327/303Guy/MVC-423F.jpg
And here it is, flattened and ready to be dried.

And the printer patch template. Arranged to minimize scizzor strokes.
http://i388.photobucket.com/albums/oo327/303Guy/303-25PaperPatchTemplate.jpg

[303Guy]

With quite a bit more practice and fine tuning the actual shape of the patch template, I no longer need to use the tools I made nor do I need to wet the fold over to keep it flat but it's probably better if I do. For that I still use the base flattening tool.

The patch itself no longer has straight sides - they are slightly curved and of slightly unequal length and this makes it real easy to wrap it on perfectly squarely and with the ends just meeting. I have also added a line (dotted) which shows me that it is square. This line also happens to be the seating depth line.

http://i388.photobucket.com/albums/oo327/303Guy/MVC-430F.jpg

http://i388.photobucket.com/albums/oo327/303Guy/MVC-431F.jpgWet flattened.

Different 'folding' technique.
http://i388.photobucket.com/albums/oo327/303Guy/MVC-412F.jpgPre-shaping of patch - see how the inner and outer wraps don't line up.

http://i388.photobucket.com/albums/oo327/303Guy/MVC-413F.jpgShaped patch. Nice and round and central.