Rapaire, you're treading on some of my more dangerous memories. When I was 15 I was the school expert on explosives; I (and all my assistants) still have both our eyes and all our fingers so I must have been doing something right. I was also in the local archery club and you remind me of various exploits. I tipped some of my arrows with dead .22 cartidges when dealing with feral cats and rabbits and I experimented with Mg ribbon to make arrow-borne flares. My most successful arrowhead required a used carbon dioxide bomb of the sort used in soda fountains, some cartridge powder from a shotgun shell and a primer from the same shell. In the interests of not drawing the attention of ASIO and the CIA to Mudcat I'll give no further details but that it made a very satisfactory hole in a hardwood (redgum; 72lbs/cubic foot) stump at 100 yards.

But, again, I'm older now.

Cheers, Rowan