ndav8r
New Member
Hey Guys:
Just completed a "skeleton in my closet" project, that I started a long time ago. It is a Bullet Concentricity Tool, that long range shooter uses to align a bullet with it's case, so it makes perfect ornear perfect contact with the rifle lands when fired. It eliminates unwanted harmonics in the rifle barrel. There are ones out there, but they have their flaws. I designed this one in AutoCAD. Why buy one for $100 when you can make one for a thousand!
It accommodates rifle bullets up to 50 Cal.
Here are Bullet tip Pilot Dies mounted on the base and on the plunger.
I mounted a more sensitive gage and a SPI micrometer push base to adjust bullet.
The frame is extra heavy frame that is adjustable to the bullet seating area.
The Bullet Case base seat into a 60 Degree pilot I can turn end for end for different case sizes.
How I use this tool, is that I place a bullet into the appropriate sized dies. I then push the left tail stock die with the bullet towards the right until the spring plunger protrudes about a 1/8 to 1/4". I then lock all levers. I adjust the pusher frame to the bullet seating area. I rotate the bullet by hand and find the high spot and mark bullet with a sharpie. I push the bullet with the micrometer noting the reading in case it needs a little more push. Other Manufactures of Concentricity Tools settle for about .003". This tool can get to about .0002", but it does take a little time.
Well, off to my next Skeleton of my Closet!
NDAV8R
Just completed a "skeleton in my closet" project, that I started a long time ago. It is a Bullet Concentricity Tool, that long range shooter uses to align a bullet with it's case, so it makes perfect ornear perfect contact with the rifle lands when fired. It eliminates unwanted harmonics in the rifle barrel. There are ones out there, but they have their flaws. I designed this one in AutoCAD. Why buy one for $100 when you can make one for a thousand!
It accommodates rifle bullets up to 50 Cal.
Here are Bullet tip Pilot Dies mounted on the base and on the plunger.
I mounted a more sensitive gage and a SPI micrometer push base to adjust bullet.
The frame is extra heavy frame that is adjustable to the bullet seating area.
The Bullet Case base seat into a 60 Degree pilot I can turn end for end for different case sizes.
How I use this tool, is that I place a bullet into the appropriate sized dies. I then push the left tail stock die with the bullet towards the right until the spring plunger protrudes about a 1/8 to 1/4". I then lock all levers. I adjust the pusher frame to the bullet seating area. I rotate the bullet by hand and find the high spot and mark bullet with a sharpie. I push the bullet with the micrometer noting the reading in case it needs a little more push. Other Manufactures of Concentricity Tools settle for about .003". This tool can get to about .0002", but it does take a little time.
Well, off to my next Skeleton of my Closet!
NDAV8R
