Enfwago, I do believe the your Kel Tec should be able to handle the +p rounds of Triton. Check your owners manual to see if they state anything against it. For the P11 I would suggest using the Triton 115gr HiVel or the 115gr Quick Shok. I have contacted the owner of Triton and his first one to use is the Quick Shok as he is very impressed with the performance of this round. You wouldn't happen to be my brothers(smitty21) buddy from Virginia who has transferred to Florida?