You want "context of professional use?" Check out the Barrett REC10. Barrett understands military/LEO needs as reflected by the history of .50BMG M82/M107 and recent MK22 MRAD Advanced Sniper Rifle contracts to the military. They make proven weapons. Ronnie and Chris "don't make no junk.....don't put their name on no junk."
They make the real deal stuff that "Protects the Protectors of Freedom." Barrett understands cans in service also. ASR MK22 Deployment Kit, although bolt, comes with barrel adapter installed on the 3 barrels in .308Win, 300Norma Magnum, and 338 Norma Magnum for their suppressor......as chosen by USSOCOM. Although your application ranges will be typically much shorter than the ASR MK22, be aware that the semi-auto M82/M107 50BMG is being phased out in favor of the 338NM MRAD bolt gun for material interdiction. Lighter weapon and ammo....carry more rounds afield......less issue prone. USSOCOM finds a shooter, at long range, can send it, run the bolt, get back on target to spot own hits within flight time of modern military rounds at long range. ASR MRAD is change barrel.....under 2 minutes....for caliber conversion and barrel replacement by operators in the field. See GARAND THUMB and DEAD POET SOCIETY YouTube videos shooting the MK22 with Ryan Kleckner (retired Special Forces) and Kevin Owens (retired Special Forces and member of USSOCOM ASR specification/selection/.evauluation team )for an in depth perspective of MRAD MK22 criteria. In 308Win, how many rounds do you really think you are going to send in any operation?