You say it didnt exit. How far did that deer travel?

Powerbelts perform best when using 80-100 grains powder.

Not sure if you've paid attention on the board but there have been many posts on here advising people not to use 150 grains with powerbelts. Powerbelts come with recommended loads and 90 grains is one of the max loads.

As for a 348 grain powerbelt blowing up on a deer, I honestly dont see that happening. Ive shot many of the 348's at rocks, railroad ties, stumps, and they've expanded to the size of a silver half dollar with little to no weight loss.

Used a 225 grain powerbelt and it did an amazing job.

Guess i should try one of these bullets on a bullet proof whitetail?