Is this thinking wrong?

300winguy · August 26, 2002, 09:27 PM

Since I have't bought a Chronograhp yet, I don't know how fast my handloads are flying out of my .223. I have noticed that a particular handload groups 2 inches high of the bulleyes eye, the same as remington factory ammo I have shot. Both bullets handload and factory are 55gr. Can I conclude that the velocities must be very similar? Or am I drawing the wrong conclusion?

HSMITH · August 26, 2002, 09:49 PM

Impact points are only a small part of it. I would not use it for velocity comparisons.

If it is the same bullet (exactly the same) you could use the drop at extended range to form some idea, but 100 yard info tells you little to nothing about velocity.

labgrade · August 26, 2002, 11:00 PM

Yup. You need at least two data points - more's better. & that's for same-same bullet shape.

August 26, 2002, 09:27 PM	#1
300winguy Member Join Date: August 27, 2001 Location: Indiana Posts: 70	Is this thinking wrong? Since I have't bought a Chronograhp yet, I don't know how fast my handloads are flying out of my .223. I have noticed that a particular handload groups 2 inches high of the bulleyes eye, the same as remington factory ammo I have shot. Both bullets handload and factory are 55gr. Can I conclude that the velocities must be very similar? Or am I drawing the wrong conclusion?

August 26, 2002, 09:49 PM	#2
HSMITH Senior Member Join Date: June 22, 2002 Posts: 2,019	Impact points are only a small part of it. I would not use it for velocity comparisons. If it is the same bullet (exactly the same) you could use the drop at extended range to form some idea, but 100 yard info tells you little to nothing about velocity.

August 26, 2002, 11:00 PM	#3
labgrade Member In Memoriam Join Date: November 29, 1999 Location: west of a small town, CO Posts: 4,346	Yup. You need at least two data points - more's better. & that's for same-same bullet shape.