I talked to David Tubb, he is getting a new run of these out. The existing ones are exploding in flight, if using for paper punching and running multiple rounds.
He felt they would be okay to varmint shoot if only using for a few shots and cooling.
He just called me last week and said the new run is getting close, slightly thicker jacket to help with the exploding in flight problem. They may not be the 117 weight, but still very similar BC and performance as the 115 DTAC.
Hope this helps. I am waiting for his call and order the new lot.
Lightforce Lights Dealer