They are all I have used for the last eight or so years. I have LOTS-O-BRASS as the .357 is my primary CCW.
I do not add any weight. They will fit over an ll/32 field tip with a little help. Us e a small nail to pop the primer out to facilitate the centering of the case on the point. Lots of 'BONK" power. If you feel the need to glue them onto a wood shaft without a field point, use a bit of silicone. Makes a somewhat flexible joint that will stand up to some pretty good impacts with rocks and such. Again, knock the primer out so that the silicone can oooz out the primer hole while you seat the casing onto the shaft.
Have not had to go the route of bleader blades but would be very simple to do using old steel banding that you could probaly pick up at any freight yard.
A good friend will have an article coming out in one of the spring TBM's featuring their use (or my cheapness as the "case" may be)
Edited to add...One of the cheapest arrows you can make up for flinging at treetop grouse is a 3/8 Ramin dowel, tapered on the front to accept the brass, self knocked with a carbide tile saw blade, and fletched with the remnants of full lenghth feathers. Again, case glued on with silicone. About 75cents worth of FUN!
Emjoy them.
Scotty