Now that I'm finally home......I found the bullet that I recovered from the neck of the young bull moose I shot back in 08(with my 358 Winchester). As I've stated before.....the bullet was doing fine until it hit the shoulder bone of the exit side of the young bull. Upon hiting that shoulder.....the bullet fragmented into pieces, the copper jacket seperated from the core......and the lead core tumbled up the front quarter and exited. The copper jacket was found against the hide in the neck (near that front quarter). The wound channel was so extensive that I lost at least 30-40% of one front quarter because of this violent bullet upset. I will never use this bullet on moose again. The word "interlock" to me......is false advertisement. My opinion of a true bonded core is the 250 grain speer hot-cor. When you pour moulten lead into a surprisingly thick copper jacket.....good things happen in the field. I depend on bullets that won't break the bank.......so I hope this field report of the interlock will help others choose affordable bullets for which to hunt big game in Alaska.
In the picture I've included (from left to right) the failed bullet (with moose hair still attached), the unloaded bullet, the spent case, the fully loaded cartridge, and a 308 winchster for a visual comparison.