It works on the long recoil design.
Taking that much weight off the barrel is going to increase the velocity of the barrel in recoil enough to eventually cause damage to the gun. How soon/how much I can't say, but you might consider talking to a 'smith who knows the Browning design well before you break out the hacksaw.
Mindset - Skillset - Toolset. In that order!
Attitude and skill will get you through times of no gear, better than gear will get you through times of no attitude and no skill.