I buy or make a RR tip. Some have threaded ends so you can attach a button jag on it if ya want.
Clean it out the tip by rolling up a piece of 320 emery paper, put it in the tip & rotate & roughen it up inside. Rasp or turn down the end to go into the tip glue it in with Devcon 2000 epoxy or Accraglas. After it sets up dry, I drill a 1/16" hole thru the tip about 1/4" from the wood, slight countersink the hole on each side, put a #3 finish nail thru it & cut it off with about 1/32" sticking out each side. Lay it on the back of the vice & peen the ends very slightly over & file it flush.
On the horn handle, I like a piece that is curved, so it doesn't hurt your hand when pushing or hitting it. I take a piece of hickory RR, take a round file & cut a lil spiral on about 1/2" of the end of the rod to go in the antler. Drill a hole in the antler & taking care Not to drill clear thru it. (I use a drill press with a vice & a stop on the down handle) Then put some Devcon or Accraglas the rod into the antler & push in hard & squeeze out the excess. Clean off the excess glue with a couple Q'tips & let it sit 24 hrs.
I probably made these two starters 25 yrs ago. They will last my lifetime unless I lose one. I seldom carry one hunting now, as most of my hunting rifles have coned barrels & I don't need a short starter. But when I do carry one, it is on the strap as such, with a patch knife above it & a powder measures made from antler tip & a pan brush.
Carry the bag under left arm as want the right clear of everything when I am shooting. Also taught myself at the range to find things in the bag with my Left hand & get them out, so when hunting I don't have to take my eye off the game.
Keith Lisle