Did Parker actually make a 3 magnum gun? Im worried that somebody reamed out the chamber somewhere along the line.
Absolutely they did make 3" chambered 12 ga. guns. This is copied from a post by Researcher:
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." But ........ that doesn't mean the gun you are referencing was originally chambered that way. Up to you to determine that.
Best, SRH
