Idea for you sabotless shooters...

[skin290]

I am not a sabotless shooter, but read your posts every once in a while, and the thing that gets me on it is that there seems (to me) to be an issue of repeatability when you start knurling with files and hand pressure. Obviously you do pretty well with it, but I was wondering if it would benefit you to have 2 sizing dies--one for the initial sizing (before knurl) and then a larger one for after you knurl...this would be to ensure the same diameter every time (or do you already do this and I missed it, since I don't actually do it?)

Just one of those things I see and don't understand, since I (usually) want everything to be repeatable, and I don't see a "fairly" repeatable method that ensures that the "knurling" is done to the same pressure and depth every single time...IF you are using the method of rubbing the bullet between 2 files. It had been churning in my mind as to what kind of tool "may" do repeatable knurling for you guys on every shot, but its a tough workholding issue with just a little bullet that doesn't have much surface to grip to (and therefore can't use a standard type of hand/lathe turning tool I am used to...)

Anyway, do you guys do this already? Or is it something that sounds plausible? just curious, once in a while an idea gets in my head...

[edge]

At least one person here does as you suggest, and it would seem to ensure consistency

I modified a hand knurler, although I haven't shot sabotless in a long time:



edge.

[skin290]

edge, that is conceptually similar to the idea working in my head.
(I was thinking along the centerless cylindrical grinder concept like that)

angled or straight knurl? Just curious...

would assume that is fairly repeatable, as long as you do the same # of turns for pressure...

[edge]

Mar 30, 2009 8:33:04 GMT -5 skin290 said:

edge, that is conceptually similar to the idea working in my head.
(I was thinking along the centerless cylindrical grinder concept like that)

angled or straight knurl? Just curious...

would assume that is fairly repeatable, as long as you do the same # of turns for pressure...

The knurler came with junky straight knurls but I switched them out for diamond knurls and added the "crank".

I also added a jam nut ( after this picture ), as a stop, to ensure sizing was consistent.

edge.

[bigmoose]

Having used Edge's knurler, I can say it works very well, Would you expect less.

As for consistency, I mic each bullet, .450.5 is my perfect size[for my barrel]

[chuck41]

XTP 200s .400" work great with a wide difference in degree of knurling. I never separate them, or resize them after knurling and they consistently will plant well under 1" at 100yd. With most loads they do considerably better than that if I do my part, but my rest and scope are the limiting factors. Fancy special knurlers or resizing are to me a total waste of time, money and energy.

[Harley]

I tried using a resizing die after knurling; but, the .449 was too small and the .450 was too large.

Harley