I apologize for not posting these photos, I had to dig to find them.
Replacing the cores on our American Whitetail target bales was actually quite easy, I think it took about 20 minutes for each bale.
Setting up a workspace makes it easy. Also, having a tractor really helps. Later on we dispensed with the X-tables and just laid the bale on top of a couple of cores on the ground.
Here you can see how shot out the center was after 7 years. Arrows in the 10-ring would be pass throughs.
Here you can see how torn up the center was, it pretty much fell out.
A Sawzall made quick work of cutting out the old core. The hardest part was keeping the blade at a consistent 90 degree angle to the old bale.
The last part was easy, jump up and down on the new core to seat it. We had some Liquid Nails on hand in case we'd cut the holes too large, but didn't need it
All in all, pretty easy and straightforward, and a
lot less expensive than new bales!
All the best, James