Can't speak for Victorylarry but the term straight rod means the rod is the same diameter it's full length allowing a greater portion of it to enter the yoke to eject the empties. The rods on two inch guns are shorter than the longer barreled guns and need the extra travel. If you look at the longer barreled Victories you will see they have an enlarged portion in the end that would severely limit the travel of a short rod as it would hit the yoke with very little movement.

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John. SWCA #1586