The Firing Line Forums - View Single Post - Lee Pro 1000 for .223...why no double disk kit?

1SOW · December 29, 2011, 12:09 AM

imq707s:

I have modified a number of holes successfully.

Warning, two things to be aware of:
1. Use a disc hole that is just smaller than needed for YOUR desired load.
2. Start enlarging the hole FROM the Bottom of the disc. This insures there is no "ledge" or obstruction that powder could rest on or stick to.
3. It only takes VERY LITTLE enlargement to get .2 grs of powder. GO SLOW and do a drop to test the weight.

My method is to use a jobber drill bit just a very small amount bigger than the hole you want to enlarge . Drill a very little from the bottom up, and check the drop. Where the bit stops leaves a very small "taper" (same as the bit shape) back to the original size hole. Repeat until you are almost where you want to be; then use a dowel with fine sandpaper wrapped around it to just fit the hole (from the bottom) Spin the dowel by hand until the inside is smooth and you almost can't see the place where you stopped drilling.

recheck the drop. Sand again if a a little more powder is needed..

This method has been accurate to 10 accumulated powder drops measuring within .1gr for me. It also leaves the original disc hole where it seats to the hopper unchanged.

Hope this makes sense.

Discs are $5 each.

December 29, 2011, 12:09 AM	#5
1SOW Senior Member Join Date: December 2, 2007 Location: South TX Posts: 269	imq707s: I have modified a number of holes successfully. Warning, two things to be aware of: 1. Use a disc hole that is just smaller than needed for YOUR desired load. 2. Start enlarging the hole FROM the Bottom of the disc. This insures there is no "ledge" or obstruction that powder could rest on or stick to. 3. It only takes VERY LITTLE enlargement to get .2 grs of powder. GO SLOW and do a drop to test the weight. My method is to use a jobber drill bit just a very small amount bigger than the hole you want to enlarge . Drill a very little from the bottom up, and check the drop. Where the bit stops leaves a very small "taper" (same as the bit shape) back to the original size hole. Repeat until you are almost where you want to be; then use a dowel with fine sandpaper wrapped around it to just fit the hole (from the bottom) Spin the dowel by hand until the inside is smooth and you almost can't see the place where you stopped drilling. recheck the drop. Sand again if a a little more powder is needed.. This method has been accurate to 10 accumulated powder drops measuring within .1gr for me. It also leaves the original disc hole where it seats to the hopper unchanged. Hope this makes sense. Discs are $5 each. Last edited by 1SOW; December 29, 2011 at 12:15 AM.