K98 type action is NOT a true ####-on-open

####-A-Doodle-Dooooooooooooooooooooooooooooooooooooooo!

x2

Excellent technical and informative post. Any one researching the operation of the M98 and Mosin cocking systems would do well to read CU's post carefully from beginning to end.



On a more serious note, I'd say the M98 is more of a 90% #### on opening. Half #### is a bit of an exaggeration.
 
x2

Excellent technical and informative post. Any one researching the operation of the M98 and Mosin cocking systems would do well to read CU's post carefully from beginning to end.



On a more serious note, I'd say the M98 is more of a 90% #### on opening. Half #### is a bit of an exaggeration.

I just did a rough measurement and it is about a 3/4 ####-on-open.
 
Interesting. I would not have thought the cocking piece moved back that much after contact with the sear on closing. I've never measured it for a percentage.

9mm on opening, 13mm when closing. 69% ####-on-open. So not even close to a true ####-on-open.
 
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9mm on opening, 13mm when closing. 69% ####-on-open. So not even close to a true ####-on-open.

I'm not sure what you're after here? Is this a good thing or a bad thing in your opinion? Or is this because the M98 is widely considered to be a #### on opening action?

I don't know if there's any advantage to a "true" #### on opening action. #### on close, #### on open, and increments in between all work just fine.

Personally I prefer a 69% #### on opening action. That's the ideal percentage.
 
x2

Excellent technical and informative post. Any one researching the operation of the M98 and Mosin cocking systems would do well to read CU's post carefully from beginning to end.

On a more serious note, I'd say the M98 is more of a 90% #### on opening. Half #### is a bit of an exaggeration.

I think I'll just stare at the avatar instead. The longer you stare, the less you think.
 
9mm on opening, 13mm when closing. 69% ####-on-open. So not even close to a true ####-on-open.
So I measured a bunch of my M98's ranging from small ring, to intermediate, to regular large ring actions and came up with an average of 75% #### on opening. These were all military actions and I didn't measure any commercial actions since this is the milsurp forum but I'd imagine they would fall in that range as well. There wasn't a big difference between any country or style of M98.

Any way, just posted to confirm your findings. I wasn't sure how big of a M98 selection you have.
 
So I measured a bunch of my M98's ranging from small ring, to intermediate, to regular large ring actions and came up with an average of 75% #### on opening. These were all military actions and I didn't measure any commercial actions since this is the milsurp forum but I'd imagine they would fall in that range as well. There wasn't a big difference between any country or style of M98.

Any way, just posted to confirm your findings. I wasn't sure how big of a M98 selection you have.

I just found it interesting that the mauser moved forward on closing. I have only 1 Mauser. It is a Chilean 1912-61. I guess not a true M98, but close enough.
 
I just found it interesting that the mauser moved forward on closing. I have only 1 Mauser. It is a Chilean 1912-61. I guess not a true M98, but close enough.

The Chilean 1912 is a true M98 action. The Steyr made actions are top quality and I wish I had a mint matching Chilean 1912. They must have been a beautiful rifle when they came out of the factory.

It is interesting for sure. I knew there was some cocking on closing but never really paid much attention to it or measured it to get a percentage.
 
The cocking-piece is moved backward by the opening action.

Then it is HELD back as the bolt is closed and locked.

The CAMMING ACTION, which is there to assure Primary Extraction, makes the bolt appear to only #### the thing 69% or 71% or whatever.

The FINAL bit of cocking is obtained when the bolt is CAMMED closed.

98 Mauser? I would call it ####-on-open.

Damned stiff old things......

Lee action is far slicker.
 
9mm on opening, 13mm when closing. 69% ####-on-open. So not even close to a true ####-on-open.

The soldiers from all sides pondered this tidbit (not a timbit) day and night in the trenches, unable to shoot, as the crumpled pages of ####-on calculations on the battle field rose higher that the rocky mountains...
 
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