Whos talking about warshrikes? I think you meant lacerators and that was a typo so I'll go with that.
No.
360 ammunition of lacerators that do between 500 and 27000 effective damage? In a naive interpretation, with deadly strike, they would do 1250 exact HP on average. Thats what, 5 hits to kill a tank of a barbarian? With a 1/8 chance to hit them, thats 40 ammo out of my 360. In reality its actually much lower, but its not 12x that, which is what you'd need for that to be true. But lets do some exact math here for a second.
500-4500 damage'
50% deadly/critical
33% amp
Now remember that after you amp someone, the next few hits are amp for free without needing to proc. So I think its only fair to say that for perhaps 50% of my hits I'll have amp up, even if it only procs at 33%. This is very easy to see in a duel, because my damage will start low and ramp up dramatically often, because after amp lands I'm dealing ludicrous damage. So lets just change amp to be -100% DR with a 50% chance, for sake of making the calculation easier. I think this is a pretty fair number.
So:
2500 average damage becomes 3750 average damage after DS
3750 average damage has a 50% chance to be 312.5 HP, and a 50% chance to be 937.5 HP
= 625 HP, on average.
So my average axe hit would take about 625 HP away. Now, compare that to a 7000 HP barbarian. Thats 10 hits (open wounds rocks socks even at 50% ranged penalty, remember)
So 10 hits, and we said a 1/8 chance to hit on a 'hit' axe. Thats 80 axes. Lets say I miss half my throws just because of a moving target. Thats still only 160/360 axes
Its true, I'll often run out of lacerators dueling against barbs, but heck, I usually start those duels with 40-50 quantity on each axe, and thats because I've already dueled them a few times already. If I did a single duel starting at full ammo I'd never run out of axes. But hey, you're right that its a pain in the ass when you run low on axes because its BvB. But I keep 2x non-eth lacerators in my stash, too. hehehe

Problem *solved*