M305 MIM bolt.

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noelb

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Has anyone had an MIM bolt not fail? What kind of round counts have people had until failure. Wondering if it’s worth keeping the MIM as a useful spare part.
 
M305 with MIM bolt must not be shot,that's it! Possible solution are to replace the MIM bolt with a chinese forged bolt or a USGI bolt and ofc having the headspace checked/corrected .
 
Since its a ticking time bomb, I would want to avoid it, and the collateral damage its failure might cause. Some guys have had them fail right away. What if it takes out an eye? Or the receiver?
 
These guns have been imported and available on the Canadian market for at least two years. I think it is safe to say that hundreds have been sold and used without incident. If the retailer has not issued a recall or even stopped selling them, I would guess the failure rate is under 1%. The attitude that they must not be shot is clearly hysteria.

That being said, they clearly must be approached with caution and attention to detail.
 
noelb said:
Has anyone had an MIM bolt not fail? What kind of round counts have people had until failure. Wondering if it’s worth keeping the MIM as a useful spare part.
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If you find a suitable replacement, especially a USGI part, it will likely be good for the life of the rifle, and you won’t need a back up part.

As for being hysteria, the related thread does outline some failures and frustrations of owners-but yes there are lots of rifles out working fine. My take would be given the potential consequences of a failure it’s a lesson I’d rather avoid learning the hard way. To keep things in context I don’t own a M305, but of all the rifles I do own of other makes, I don’t have a spare bolt for any.
 
I wonder if there are any precautionary measures that could be taken, or perhaps some telltale signs before a bolt lug shears off.
 
BattleRife said:
These guns have been imported and available on the Canadian market for at least two years. I think it is safe to say that hundreds have been sold and used without incident. If the retailer has not issued a recall or even stopped selling them, I would guess the failure rate is under 1%. The attitude that they must not be shot is clearly hysteria.

That being said, they clearly must be approached with caution and attention to detail.
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I have zero idea if 1% of bolts have failed or not, but to put things in context: Nobody shoots low-number Springfields and less than 0.01% of those receivers failed.

Do you feel lucky? Like having sight, teeth, a sense of smell, or your life? willing to spin the wheel every time you go shooting?

Personally, I am not.
 
I do not know how many rifles with MIM bolts have been imported and sold.
I do not know how many MIM bolts have had their locking lugs break off. Some have failed.
I am trying to recall cases of other modern production rifles shedding their locking lugs, and am drawing a blank.
These current 305s have little to recommend them.
 
Claven2 said:
OK, I'll play - what about your fingers, forearms, the people on the next bench over...?
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I agree all good points..I assumed a certain amount of due dillegance and best practises would enter into this..
Everything we do has a risk...and yes further protective gear should be worn while shooting a rifle with a MIM bolt..like shirt, pants, gloves others can fill in the rest
And don't have your buddy standing over your gun trying to get a vid of the lug tearing off
 
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