I have a couple of 3-d mckenzie's that have held up real well....as has my block...I have had them all a little over 5 years and have shot them a lot....The 3-d's are hard to get the arrow's out of but they have lasted...I am just about in need of a new block but I shoot it the most....
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I've got the Morrell YellowJacket and it is multiple times better than my original Block target. I haven't shot the new 4x4 however, so I can't comment on that one.
i don't know if i just shoot a lot (i really don't), but i have had the block almost two seasons now and it is all torn up...and that is 90% practice tips. I am not saying it is not a good target, cause it is, but i think there are other targets that last longer than that shooting as little as i did for $100.
The rinehart 18:1 holds up very well. It is actually guaranteed. I have pounded mine with field points and broadheads so much that it kind of broke in half. It still works.
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Nature does nothing uselessly.
- Aristotle -