16'' is what i have and does good for me but if you have FB or on their MSR forum they could probably answer the advantages of barrel length better than i can but im pretty sure that is a velocity thing. Now to my knowledge they only offer two rate of twist for the wolverine 1:7 (super and subs) or 1:11 (super only). I will say the barrel on the one in the picture is 1:7 and i just bought another one that is 1:11 (i don't do subsonic rounds for anything) so i am curious to see the difference between the two with my pet load for the 100 gr HP. I will say this if you are looking at getting a barrel they have something going on on their FB page that you might find very interesting. Bunch of good guys on their pages and much more knowledgeable than I so just hit them up. Also can find used barrels at good prices on their forum as well.


https://www.facebook.com/Mad-Dog-Wea...ref=nf&__xts__[0]=68.ARDXhaaNu03O6Vk9O3YUUXnnEAFuNZen1Gj_6k59uaiCUI 1a3whk1hK2ieHxx3Q8jki0Why6KEHFUuqcu-VXNFjxhiuFyOVcE1T8EEUS4Suk6fud7_2LsPJMF5NO9m_8xTkQ TknPFy4qFZTECzwWRWBlpMK2GZBWEmroyKBGZWFoPQ_ZrqzrbN xJxS8qZg9mI5aF4wzl6BFznOJaGtZ4R6C8o9q0Qpq6Kyky8TTk sROMQNhQv1y5iZKmZi1E9YQwyVHn0zbEj46mCMaTuJVcWWWLn-pxWKYaC8pruW-WFCyK14FiFSBvO4SXHHSxfZC7hrIEuQpg0NBBSj1k-zMW