riggins_83 + 1
I would be more apt to agree with you if you had an existing barrel length in excess of 20". I'm sure there is more documentation out there on what the optimum length might be but I don't see you having a problem at this time. I would refer you to the
NRA "Fact Book, 3rd. edition, page 200, under .22 barrel lengths. Basically it states that a .22 will develope it's max. velocity at in a barel lenght of 20" or less. However, they don't list how much less. Might want to think about installing a Timney trigger that will cost you less.
I fully understand that this is your new pet and you are free to do whatever you wish. As Riggins posted; take it our and shoot it and at least you can use this as a base line to see where you might want to go. ... JMHO .....
Be Safe !!!