I ended up making a double sided press tool. The one side slides snug over the male conector and the other slides over the slightly larger female conector. Then using a small hammer with a light tap I pressed each bullet into the plastic connector with the tool!

I used a short piece of aluminum bar stock & machined each side in a lathe to a few thousands over the male bullet on one side of the aluminum bar stock and then a few thousands over the female bullet on the other side. Then I shrink wrapped the tool to insulate it when pressing in a hot connection. It sure made pushing the bullets into the plug easy. Castle should of included something along the lines of this for the multi pack. Lol

http://i1098.photobucket.com/albums/...snf822shc.jpeg

http://i1098.photobucket.com/albums/...solhhivqu.jpeg

I'd recommend against bullets for frequent disconnect applications, the "banana spring" wears out and the connection becomes poor.

I'm a deans guy personally, if I need a battery connector I use deans, even on 12S helis. they don't even get warm, last nearly forever and are compact.