knurling device

[dougedwards]

I am discovering that shooting sabotless is a completely different operation from shooting with sabots especially in smaller bores. The relationship between the bore and the bullet fit is critical to attaining precision type of accuracy. I have been knurling with two sharp files and that has worked well for knurling bullets for sabots but now I would like to be able to give a more consistent knurl.

I know that some knurling devices exist but I am wondering if anyone knows very much about these devices and if there is any way to gauge the amount of knurl that would be delivered to the bullet?

Doug

[sw]

I use 3 different methods. I use 2 bastard files and roll the bullet under a certain amt of pressure(gauged only by felt pressure - so I guess, it's not too "certain" . I also use a single bastard file and then a coarse circular file to roll the bullet with - this knurls the bullet for a tighter fit than the first way. This is what I use for 195B in my 40, and the 1st for 200SSTs in the 40. The third way is to use the Martindale 3-wheel knurler which will knurl all the way to 0.010". It is very easy to over-knurl with the 3-wheel knurler! The 1st two ways are all I use now. They are adequate for both my 40 and 45. Hope this helps.

[dougedwards]

Thanks Steve.......I think I will try the round file and see how consistent I can be with the knurl. No need to buy another item when I might be able to get this knurling thing down by hand.

Doug

[boarhog]

When I was trying to shoot my .50 sabotless, I was able to knurl a .500 bullet up to just about .504. I didn't get very far with the two flat bastard files(.001-2), so I tried a half-round wood rasp, then a rat-tail style wood rasp. It wasn't enough! Maybe I need one of those 3 wheel knurlers?

[sw]

Aug 7, 2009 22:33:52 GMT -5 boarhog said:

Maybe I need one of those 3 wheel knurlers?

It will go up the entire 0.01", after which going between the 2 bastard files helps even it out. Martindale is the company.