I carried a 6906 for several years as an LE duty gun and we were forbidden to fire at +p ammo through ours. I know the concern from the range staff was how the hotter rounds would impact (no pun intended) the aluminum frames, especially those that had been in service for several years. I always adopted the philsophy (with most guns and the use of +p ammo) to shoot standard stuff and carry +p.
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