Parker Long Range -- In the 1929 "Flying Geese" catalogue the Brothers P had this to say -- "Magnum, Super, and variously named guns about which so much is now being written are not a new development in the gun makers' art.
For the past twenty years Parker Brothers have made guns to handle heavy charges of powder and shot, giving good patterns at long range. Recent improvements in powder and by shell manufacturers have served to make the Parker Long Range gun even more effective, so that today the Parker built and bored to secure the full power of modern loads with which one may confidently expect to bring down game at distances a few years ago considered impossible, is up to date but not new.
Parker Long Range guns are built to guard the user against abnormal recoil. The weight of the barrels is so distributed that the gun handles the heaviest loads with comfort. The purchaser of a Parker Long Range can rest assured that he will receive a gun, easy to handle, sufficiently heavy and properly bored to shoot the heaviest loads for the killing of wild fowl at extreme ranges."
The 1937 Remington era catalogue adds -- "Ordinarily Parker 12 gauge guns are chambered for shells up to and including 2 3/4 inches. These guns can be furnished with special long range choke boring to give more effective results at extreme ranges. 12 gauge double barrel guns, with the exception of the "Trojan" are also available with 3 inch chambers for use with maximum long range heavy loaded shells. So chambered, Parker guns are guaranteed to handle these shells properly."
"Parker 10 gauge guns are regularly chambered for 2 7/8 inch loads, but are also available with 3 1/2 inch chambers for use with maximum loads. No extra charge for a Parker Long Range Gun. Guns should never be used with shells longer than those for which they are chambered. See table of complete specifications on page 34."