rockstar.esq
Member
- Joined
- Dec 9, 2004
- Messages
- 1,475
I saw this thing in a Sinclair catalogue. http://www.sinclairintl.com/cgi-bin/category.cgi?category=RESDTCO&type=store
It looks like a 3/4" nut that has a hole drilled in each flat side. Each hole is supposed to correspond to the ogive of a specific bore dia. They refer to this thing in the same area as their OAL gauges to determine how long a specific rifles chamber is. They claim that the overall length of a bullet is not consistent but that the length to the ogive is. This confuses me because they say the optimum OAL of your loaded ammo should be .005" - .010" shorter than the OAL of the rifles chamber. So if the ogive is the major diameter of the bullet, does this gauge determine how long the bullet is from the base to the end of the ogive? I hope this makes sense.
It looks like a 3/4" nut that has a hole drilled in each flat side. Each hole is supposed to correspond to the ogive of a specific bore dia. They refer to this thing in the same area as their OAL gauges to determine how long a specific rifles chamber is. They claim that the overall length of a bullet is not consistent but that the length to the ogive is. This confuses me because they say the optimum OAL of your loaded ammo should be .005" - .010" shorter than the OAL of the rifles chamber. So if the ogive is the major diameter of the bullet, does this gauge determine how long the bullet is from the base to the end of the ogive? I hope this makes sense.