It's definietly being narrowed down. My only doubts are that no extraction problems were identified in the Trials report which was quite specific about documenting every little detail.

Although the .526-.528" rim diameter was a an improvement over the .45 Colt .510" and Schofield .522" rim diameters. But still however Frankford did see a need to go to the .536-.540 rim in their .45 1909 cartridge for reliable ejection in the Colt New Service.

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Jim
S&WCA #819