62 usable blocks with 2 usable 2X crossways and double shot as well as one unused block. That's X8 boost witch is worth round 13.25 usuable blocks and the unused slot is worth around .31 blocks. That equates to around 75.56 usable blocks with no multiplers. That being said it lacks any blank blocks. The most common builds I see are 78 block long with 1 unused block and have a -66.7% multiplier. This gives them an effective ≈71.31 blocks making your build better than that build. However there are an abundance of 75 block length build with 3 unused blocks giving the an effective ≈76 blocks making your build bad. The current build I'm using (witch I'm sure isn't fully optimized) is 73 blocks long with a minimum of a X2 multiplier and 1 unused block making it an effective 77.81 block long build. All of this is not even mentioning you have to turn your bullets like a pleb.