Full and unopened soda bottles are quite firm - it would take a fair bit to pierce (for an air rifle) - say 20 ft.lbs? or 10% of the muzzle energy at 1000 yards. The projectile will be at a crawl at that distance. Air gunners are known for talking bullshit but this takes the cake - speaking as a national level Air Rifle Field Target shooter.
When I was a kid I used to do this. I would pack diy blackpowder in the cavity behind the slug. It worked similar to a case less round and would punch a .22 cal slug through 12mm ply at 100m from a worn out BSA.Quote:
Originally Posted by AlexW
I would also fill a 1.5l drink bottle 3/4 with water and using a car valve under the bottle cap pump it to 100 psi. The resulting strike from the air rifle would fracture the bottle (all that was required) and the water would blow out instantly. It sounded like a 12 Guage.
Aye @Ingrid and @stretch
Almost lost my hand one time.
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"It's Airguns Jim,but not as we know it":O_O:Quote:
Originally Posted by AlexW
Two times that I can recall. Once when that coke bottle exploded at 200(?)psi, and once when someone inadvertently lit an entire packet of skyrockets in your bedroom and you tried to extinguish them by cupping your hands over the burny end. Painful chemistry lesson, that one - rockets don't need atmospheric oxygen to do their thing.Quote:
Originally Posted by Feral
Hook brother up, who wants to carry the air bottle for me??
92 grn .257 @ 1000 fps. Is 204 ft/lbs:o mine is 17
Another small paragraph I found.
Precharged pneumatic (PCP) airguns represent one of the oldest airgun powerplants of all time. They have been around since at least the early 1600s and most likely a bit longer. In the 1780s, the Austrians fielded over 500 riflemen, each armed with a breechloading .47 caliber 21-shot repeating air rifle and the capability to fire at least 42 shots before returning to the rear for more air. This was at a time when repeating firearms were just a glimmer on the technological horizon, and few armies used rifles in any quantity--most used smoothbore muskets. :cool: