Originally Posted by Engineering101
You guys with the new Magnetospeed chronos. How does it correct for the recoil of the rilfe? A 9 lb 30-06 will be moving backward (and taking the Magnetospeed with it) as the bullet is leaving the barrel. The velocity of the rifle at that point in time (just before the velocity of the bullet is measured) will be about 9 feet per second and the rifle will have moved backward about 0.060 of an inch (basically in free recoil since it hasn't compressed the recoild pad or the flesh of your shoulder). This velocity will get added to the velocity that the Magnetospeed is reading. Does the unit allow you to tell it the velocity of the rifle so it can be automatically corrected?
As an engineer, I would figure you would be aware of velocity vs disance traveled. You might ask how that plays into this scenario? Here we go...
The bullet actually leaves the barrel WAY before you even feel the first hint of recoil. If a bullet is traveling 3,000 fps, and your barrel is only 26" long (2.17 feet), then it takes your bullet approximately 0.0007233 seconds to travel the full length of your bore and out of the muzzle, after ignition. Felt recoil will not happen until after the bullet has left the muzzle expelling all of it's gasses and energy into the atmosphere causing a rearward force (recoil).
I've waved my MSv2 bayonet around (while plugged in) to see if it would pickup anything, and I think they've got it set to where it has to have something solid traveling VERY close to it, for it to read anything, so I'd assume you'll be ok. Mine reads perfectly, and is very close to book load velocities on several of my loads, so I would guess it is pretty accurate.
"I'm just a peckerwood who lives in the hills with too many guns..." - Bob Lee Swagger
"Give me a minute...I'm good. Give me an hour...I'm great. Give me 6 months...And I'm unbeatable." - Col. Hannibal Smith
Originally Posted by WildRose
The 284 is to the STW what a tricycle is to a Ninja.