I have found some things to consider when using a 135gr load.
In the past the FBI has tested and found this load failing to penitrate and did not pass it in testing.
Bullet design using copper and bonded bullets have improved since this testing.
The velocity increase using a 135gr (Corbon) was impressive in vewing ballistics by the inch charts. The increase in velocity in a longer carbine barrel improves the sectional density numbers and possibly could improve penitration. Increased velocity also may degrade accuracy if the bullet starts jumping the barrel rifling due to the twist rate for the barrel in your carbine possibly resulting in a loss in accuracy at a distance.

I can only test by shooting targets at a range and hearing how loud the gong sounds. If you have hunting or real life experience with a carbine I would be interested in hearing from you.

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