Sorry if my post was unclear. The maximum OAL in the cartridge spec is 1.275" That is there so rounds will chamber reliably in all guns. If you are over maximum, the rounds may not fit your magazine or chamber.
Each specific load receipe has an OAL associated with it. That spec is a MINIMUM OAL. It says, if you use this receipe and don't seat the bullet any deeper than this minimum OAL, you will be OK pressure wise.
Most people find the above minimum OAL is usually shorter than a preferred OAL and load their rounds longer than the minimum OAL in the load spec (but not longer than 1.275", as then they might not fit in their magazine).
For instance, Hodgdon specifies 1.200" as the MINIMUM OAL for their load for 230gr round nose bullets using their W231 powder up to 5.3grs maximum. I load my 230gr RN bullets to 1.260-1.265" so I am OK as I am above their minimum OAL and not at or above the cartridge maximum.
Make sense?
Each specific load receipe has an OAL associated with it. That spec is a MINIMUM OAL. It says, if you use this receipe and don't seat the bullet any deeper than this minimum OAL, you will be OK pressure wise.
Most people find the above minimum OAL is usually shorter than a preferred OAL and load their rounds longer than the minimum OAL in the load spec (but not longer than 1.275", as then they might not fit in their magazine).
For instance, Hodgdon specifies 1.200" as the MINIMUM OAL for their load for 230gr round nose bullets using their W231 powder up to 5.3grs maximum. I load my 230gr RN bullets to 1.260-1.265" so I am OK as I am above their minimum OAL and not at or above the cartridge maximum.
Make sense?

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