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short action & long action
- Thread starter sks
- Start date
In very general terms short actions are made to the scale of the .308 family of cartridges and the long actions for the .30-06 and magnum cartridges.
Sometimes the actions are larger than necessary for the cartridge -- a .223 in a Remington action that will take a .308 for example.
Most rifle companies have at least two sizes. Sako has 5 different sizes ranging from the .17/.223 right up to the large magnums.
Sometimes the actions are larger than necessary for the cartridge -- a .223 in a Remington action that will take a .308 for example.
Most rifle companies have at least two sizes. Sako has 5 different sizes ranging from the .17/.223 right up to the large magnums.
sks
The action is definitely longer to fit the longer cartridge. Therefore the bolt throw in a short action is less than a long action.
In those cases where the action is longer than it needs to be (e.g. .223 in a .308 action) the bolt throw is also longer than it needs to be. The other point is that the magazine usually needs to be altered to feed the shorter cartridge. I have owned a Remington and Tikka .223 and in both the magazines are the same length as the .308 cartridges and each has an insert in the rear of the mag to permit proper feeding of the shorter cartridge.
The action is definitely longer to fit the longer cartridge. Therefore the bolt throw in a short action is less than a long action.
In those cases where the action is longer than it needs to be (e.g. .223 in a .308 action) the bolt throw is also longer than it needs to be. The other point is that the magazine usually needs to be altered to feed the shorter cartridge. I have owned a Remington and Tikka .223 and in both the magazines are the same length as the .308 cartridges and each has an insert in the rear of the mag to permit proper feeding of the shorter cartridge.
9mmepiphany
New member
action lenght refers to the size of the action rather than the lenght of the bolt travel. it is about how long a cartridge can be "worked" through the action.
a true "magnum" action is sized for the .375 H&H + lenght cartridges
ultralight arms, before colt bought them, made their short action (ul-20) with a longer bolt throw, and mag size, so that shooters could load their bullets out further (.284 so the bullet base could be level with the base of the neck)
a true "magnum" action is sized for the .375 H&H + lenght cartridges
ultralight arms, before colt bought them, made their short action (ul-20) with a longer bolt throw, and mag size, so that shooters could load their bullets out further (.284 so the bullet base could be level with the base of the neck)