Improving the striker ramp in a bolt action

adamg

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Ruger Precision Rimfire. Here's a photo of it:

Txd96OH.jpg


I've found that the bolt close action requires more force than I prefer.

My understanding of the mechanism: To close the bolt, I have to compress the striker spring enough to get it out of the 'half cocked' ramp trough, clearing the peak in the ramp. This is done by a combination of pushing forward and turning the bolt handle.

After firing, the striker goes to the depth of the 'not cocked' ramp trough, and lifting the bolt handle compresses the spring enough to get it over the peak, but then it falls back into the 'half cocked' trough as I finish lifting the handle.

My thinking is that it's a waste to go through all the mechanical effort of re-cocking the striker spring during the bolt open process, only to then let it fall half way back down in the 'half cocked' trough.

So why not fill in that trough, to keep the striker more compressed, reducing the amount of force required to close the bolt on the next cycle? Something like filling in the trough like this:

FZDkvf2.jpg


I would still want a tiny trough, to ensure the ramp doesn't spin and drop the striker right to the bottom. Also that tiny trough would have to be in the correct spot (left-right, aka handle open-close), so the bolt handle is in the correct position to enter the bolt handle raceway in the action.

Anything wrong with my thinking? Is Devcon the right material to fill in the trough? Lots of grease on the striker assembly to prevent it from gluing the striker together when it is applied?
 
I am sure this can be altered to give a smoother bolt operation... but I have never seen or handled this model of rifle... I think what you are describing is the "notch" that keeps the rear of the bolt from rotating out of position when the bolt is fully retracted. Good luck with what ever you do... Usually this is a very small notch.. (Remington 700 for instance) and usually removing material is how it is done... very little material or you will require some new parts. I did a lot of 700's.
 
OP,
Before you start modifying/blending/polishing-
Check striker to sear hand off-FIRST.
or
you may need to replace some pieces/parts.

by the appearance-
Typical Ruger screw machine technology-FUGLY!!
 
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