Unfortunately the xray cant tell the difference between lead and copper, so what we are looking at could be a mixture of both, however looking at the projectile i took from the animal, i would have to guess a fair amount of it is copper. the lead part of the core seems to be still relatively intact for the most part, where as the lead core has just mushroomed over. 143gr projectile and it now weighs 119gr so it has stayed relatively intact for this type of projectile.
On the lead core intact but mushroomed, i would agree. Thats what i have found, generally its only ever been bits of copper jacket i have found when butchering close to the wound channel. Come to think of it, not sure i have ever found lead seperate to the projectile, not that i can recall anyway.
Basically the whole point of this to see how far the projectile spreads in a realistic nz hunting situation with common nz projectiles/calibres, rather than going by the carnage that the internet would lead you to beleive. Wether thats copper or lead is hard to determine without more than an xray.
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