I shoot 175gr. so I took a 200 gr field point and ground it down to the flat and then cut a notch in it with a dremmel. This one came out exactly 175,but I guess it doesn't matter if the next ones do or not. Do you think this will get under the grass or pop up like they are supposed to do. I guess I'm not out much if it doesn't work. It just seems like the commercial heads are so expensive. (http://i1254.photobucket.com/albums/hh619/_9alex/100_1989.jpg)
Only one way to find out.
That's not going to "pop up". It's going to fill with dirt and then do just what a blunt normally does.
Then again, I've never had a Judo or any other head "pop up" except when carp shooting with blunts and wood shafts.