My favorite barrel length is 20". I own 4 rifles with stubby barrels, they are a joy to pack. With your rifle I can't see how bobbing it to 22" would hurt anything. Make it a lot more handy for sure, and no critter is gonna know that torpedo bullet was going 75fps slower, or whatever it might come out to.
Let us know what you decide, I would be curious to see what actual velocity loss is if you do cut it back.
