actually, even with the corrected value of 88,000 rpm, that value isn't too high. high speed medical and dental drills run at those speeds all the time, for hours on end, whereas a bullet RARELY has a full minute time of flight, and that would NEVER be a 9mm handgun.I don't believe the bullet is spinning that fast. If it could fly for a full minute it would rotate a total of 1400 times
Wish I had pix. Maybe get some done sometime. They look like they come out of water if impact veocity isn't too much for alloy.
Reload that blue one. The one stuck in the tree,again!!!!!
The bullet is only turning 1:9 as it leaves the barrel. As the velocity drops the rpm remains pretty much the same so when the velocity had dropped in half the bullet will be turning close to 1:4.5. (Crude example)
A top fuel dragster will cover the 1000 feet (no longer 1/4 mile for top fuel and funny cars) in about 3.8 seconds and average around 8000 rpm so they only turn about 500 revolutions not accounting for the time the clutch is slipping prior to lockup. That 500 revolutions costs somewhere around $6000.00 in tire wear, an engine rebuild, 18 gallons of nitromethane and labor costs.
Sometimes life taps you on the shoulder and reminds you it's a one way street. Jim Morris
Frozen trees, oh my!! In my misspent youth, I fired a .69 cal flintlock pistol at a target on a frozen oak tree. That ball came straight back between the eyes. My head is hard, no real damage but wow, what a headache for a week. That and explaining to your parents how you did it.….……………….
Don
Friend of mine was walking the woods with his kids. The kid shot at a frozen oak tree 40 yards out and the bullet came back and hit him in the zipper. They picked the bullet up off the crusted snow they were walking on. Yep don’t shoot trees in the winter, they make bad back stops.
BP | Bronze Point | IMR | Improved Military Rifle | PTD | Pointed |
BR | Bench Rest | M | Magnum | RN | Round Nose |
BT | Boat Tail | PL | Power-Lokt | SP | Soft Point |
C | Compressed Charge | PR | Primer | SPCL | Soft Point "Core-Lokt" |
HP | Hollow Point | PSPCL | Pointed Soft Point "Core Lokt" | C.O.L. | Cartridge Overall Length |
PSP | Pointed Soft Point | Spz | Spitzer Point | SBT | Spitzer Boat Tail |
LRN | Lead Round Nose | LWC | Lead Wad Cutter | LSWC | Lead Semi Wad Cutter |
GC | Gas Check |