The 3 choke tubes that came with it are notched
1 is .680
2 is .700
3 is .720
I know it only has the 12.5" barrel but I'm looking for something that could handle 00 buckshot with a decent pattern at 30 yards. I have the .720 in the shotgun right now and shot it the other day with a fairly decent pattern but when out weather improves I am going to try the .700 from my Googling it looks like a full choke is a no no as the pellets possibly get deformed passing through the choke?
Probably can't expect much from the shorter barrel, I Googled Carlsons and this is what I found, their Buckshot choke tube measures .695 which is close to my #2 @ .700 so that's why i will give my #2 a try.
Benelli Mobil (Flush choke is 2" with threads at top) - (click to see chokes for this system)
Interchanges with Carlson's Beretta/Benelli Mobil style threads (SBE I, Nova & Super Nova, M-4, Ethos, Legacy, Montefeltro made prior to 2007)
Beretta Benelli Mobil BuckShot Choke Tubes
Our NEW Ported Buckshot choke tube is designed to give you tight patterns downrange with 00 & 000 buckshot. This choke is ported to reduce recoil and muzzle jump that tend to go hand in hand with these large loads. This choke features a constriction designed specifically to optimize patterns with large and small loads alike. This choke will extended about 1” out of the barrel and has a black finish. Machined out of 17-4 heat treated material this choke can be used with Lead, Steel, and Hevi-Shot loads. This choke cannot be used with any Steel Shot larger than BB or with any Steel shot faster than 1550 FPS.
Beretta Benelli Mobil 12 Gauge BuckShot Choke Tubes
Item# Const. Dia. $54.50
15599