i had a military lee enfield carbine in .303 brit, 18" barrel, kicked like a mule. the .303 caliber is no longer a mainstream cartridge like .308win or .03-06. i've had a number of .30-06 and .308win rifles and yer cartridge choice should be dependent on yer needs and whether or not you'll handload. personally, i prefer the .308win for a .30 caliber rifle for both long range and hunting, and i handload for all my firearms. lotsa great choices out there. for long range, a marlin xs7vh with 26" heavy tube and adjustable trigger; and for hunting, a ruger american predator with 18" slightly hefty barrel and adjustable trigger ... or just go with the marlin and chop the barrel. both are in the under $400 dollar price tag range, and both are excellent choices, imho. good luck.