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View Full Version : Centerfire Bolt hard to open and close when chambering on 340D



jbo225
01-01-2017, 09:25 PM
Can anyone tell me why my bolt my my 340D is hard to cycle only when a round is being chambered opening and closing

jbo225
01-01-2017, 09:35 PM
Also it's a 222

short round
01-01-2017, 10:06 PM
I'd start with cleaning the chamber. If reloads, the shoulder may need shoulder bumped back on the brass.

Gene L
01-01-2017, 10:08 PM
I had a 340 in .22 Hornet that wouldn't extract one brand of factory ammo. I can't remember which one, but it shot other brands just fine. Is it difficult with other brands and are you using new ammo or reloads?

jbo225
01-01-2017, 10:20 PM
It ejects the rounds fine it's just the bolt is really hard to open and close when chambering a round

Big Al1
01-01-2017, 11:06 PM
I'll second cleaning the chamber, make sure there's no pits!

jbo225
01-02-2017, 12:21 AM
I did clean the chamber good

The Old Coach
01-02-2017, 06:04 PM
Odd that this should happen with a 340. Hardly ever does anybody swap barrels on one, so the headspace should be as from the factory. Dittos on cleaning the chamber, then look to the ammo. Is it factory or reloads? If it won't chamber a factory round easily, beg, borrow, rent or steal some headspace gages and reset it.

The Machinist
01-21-2017, 12:41 AM
After looking the above responses & those don't help, look at the gas shield key #3325-541. This is a pivoted part in the front of the gas shield (bolt guide to many). It is supposed to lock the gas shield into the bolt body to keep it from rotating during the retraction. If it gets worn on the front or rear, it usually will not unlock from it's mating notch in the top of the bolt body without putting a lot of force on the bolt handle.

To check it, just temporarily remove it & see if that helps.

roootie3
02-02-2017, 10:55 PM
The machinest nailed it!!! My 340e problem was addressed by his information and fixed.

Larry