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The_Dunedan · 11-23-2006, 12:22 AM

http://www.thegunzone.com/stop.html
http://www.thegunzone.com/m1akb.html
http://www.thegunzone.com/m1akb/762d19.html

Please note that in none of the burst barrels above have the splits/tears in the steel followed the rifling in the barrel. A catastrophic barrel failure is -much- too fast an event for the >1/16" grooves in a barrel to cause enough stress differential to make a difference. This is part of why nobody uses/manufactures the old-fashioned "pineapple" grenades anymore: in order for the scoring on the casing to produce the fragmenting effect which was intended, the casing had to be so thick (and the cuts so deep) that it made the grenade needlessly heavy and limited its's range. For cuts or grooves to play a significant part in an explosive failure such as this, they have to be pretty damned deep, and the object in question as to hold together long enough for the pressure to have time to "flow" against and rupture the weaker portions. A barrel failure simply happens too fast for that.

11-23-2006, 12:22 AM	#15 (permalink)
The_Dunedan Junkie	http://www.thegunzone.com/stop.html http://www.thegunzone.com/m1akb.html http://www.thegunzone.com/m1akb/762d19.html Please note that in none of the burst barrels above have the splits/tears in the steel followed the rifling in the barrel. A catastrophic barrel failure is -much- too fast an event for the >1/16" grooves in a barrel to cause enough stress differential to make a difference. This is part of why nobody uses/manufactures the old-fashioned "pineapple" grenades anymore: in order for the scoring on the casing to produce the fragmenting effect which was intended, the casing had to be so thick (and the cuts so deep) that it made the grenade needlessly heavy and limited its's range. For cuts or grooves to play a significant part in an explosive failure such as this, they have to be pretty damned deep, and the object in question as to hold together long enough for the pressure to have time to "flow" against and rupture the weaker portions. A barrel failure simply happens too fast for that.