i just bought a brand new stevens 200 in .223, i would really like to put a heavier barrel on this gun along with a few extras, but here is my question, in the midwayusa catolog there are some factory drop-in barrels that are made by savage for $135 these barrels are 24" with 1-14 twist,are these barrels of good quality i am not a competition shooter but do enjoy hitting what i shoot at, can i expect good thing from this barrel or should i save more and go custom? Also i really want a 20" instead of 24 can i get a barrel cut off to that lenght without destroying the accuracy?

thanks j