Poll

Cock on open or close ?

Cam striker back on open
1 (12.5%)
Hold striker back on close
3 (37.5%)
No preference
4 (50%)

Total Members Voted: 8

Voting closed: August 08, 2017, 03:06:50 PM


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Author Topic: Bolt action  (Read 3663 times)

tombogan03884

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Bolt action
« on: July 25, 2017, 03:06:50 PM »
Cock on open, or cock on close ?
Justify your choice .
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alfsauve

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Re: Bolt action
« Reply #1 on: July 25, 2017, 04:34:16 PM »
Or it could be like those  Chipmunk rifles where cocking is independent of the bolt action.   You have to pull the striker back manually after you've closed the bolt.

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Will work for ammo
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PegLeg45

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Re: Bolt action
« Reply #2 on: July 25, 2017, 05:11:10 PM »
My Brownings cock on open.
Speaking from a hunting perspective, I do think it makes for a smoother bolt cycle when shooting rapidly (just my opinion). I think it just works better for follow-up shots to power the bolt open and then cycle smoothly to close than having to power it closed.
I've seen guys at the range trying to shoot rapidly and end up fumbling to close bolts on rifles that cock when closing (springs may have been really stiff).

That being said, I might add that I only think it is a very minor difference.
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Big Frank

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Re: Bolt action
« Reply #3 on: July 25, 2017, 07:03:07 PM »
I don't even own a bolt action and haven't in many years, but what I read makes me think cock on closing would be better. Opening the bolt works to unlock it and cam the case back a little. If the case is sticking that makes it even more work and you don't need to add more work (cocking) to it. Closing the bolt on a new round is so easy that cocking it then shouldn't be any trouble.
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DanPatWork

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Re: Bolt action
« Reply #4 on: July 27, 2017, 06:20:47 AM »
I prefer the bolt to be unsprung. Store open for free air flow, and spring at rest.
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Re: Bolt action
« Reply #5 on: Today at 06:38:18 AM »
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tombogan03884

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Re: Bolt action
« Reply #5 on: July 27, 2017, 07:17:15 AM »
Being still isn't what puts wear on springs, it's the movement, compressing, or releasing, not BEING compressed or released.
But I agree about leaving them uncompressed since you might want to take it apart and all springs at rest makes that a bit more convenient.
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TAB

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Re: Bolt action
« Reply #6 on: July 27, 2017, 10:50:01 AM »
On standard pressure stuff it does not matter, on the really high pressure stuff cock on close.   I don't want any extra effort for extraction. 
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DanPatWork

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Re: Bolt action
« Reply #7 on: July 27, 2017, 05:40:24 PM »
Quote from: tombogan03884 on July 27, 2017, 07:17:15 AM
Being still isn't what puts wear on springs, it's the movement, compressing, or releasing, not BEING compressed or released.
But I agree about leaving them uncompressed since you might want to take it apart and all springs at rest makes that a bit more convenient.


thanks .. my limited knowledge of springs is from auto/truck work. Rarely do they just sit, so I have only considered the spring length lost after years of compression.
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"The laws that forbid the carrying of arms are laws of such a nature. They disarm only those who are neither inclined nor determined to commit crimes.... Such laws make things worse for the assaulted and better for the assailants; they serve rather to encourage than to prevent homicides, for an unarmed man may be attacked with greater confidence than an armed man."
- Thomas Jefferson, Commonplace Book (quoting 18th century criminologist Cesare Beccaria), 1774-1776

tombogan03884

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Re: Bolt action
« Reply #8 on: July 28, 2017, 06:04:11 AM »
There was a debate a while back about leaving mags loaded or not and the final word was that leaving them was fine either way, it was loading and unloaded that caused wear.
Then in one of the rifle video's on CandRsenal Othias made the same point in relation to rifle strikers.
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billt

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Re: Bolt action
« Reply #9 on: July 28, 2017, 07:26:04 AM »
The only cock on closing rifle I have is my Enfield. If you take modern cock on opening rifles like the Remington 700, and the Winchester Model 70, it really doesn't take any added effort in lifting the bolt handle to cock it. You can easily do it with just your thumb. There is plenty of camming action to do both cock the firing pin, and extract the case. Even with hot loads. I never cared for cock on closing. It just seems awkward. Especially if you have a scope mounted with not a lot of bolt handle clearance. With cock on opening, closing the action on a live round is effortless. Even with controlled round feed.
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