Running 455 bolt too hard?

[chadrp]

Can you run the 455 bolt too hard like if youre used to running a centerfire?

I've had my 455 for 8 months and for 6 months I've been running it with the DIP sear and 3rd lightest spring, 2lb pull, with no issues. I started doing some competitions with it in the last couple weeks and while practicing yesterday, the bolt stop started letting the bolt past it if I hit it hard. I know there can be issues if the trigger spring is too light. Can there be bolt stop
issues if there isn't enough sear engagement with the adjustable sear?

I noticed some wear on the back of the bolt where the bolt stop stops it that looks like it may be starting to make it ramp over it. I didn't think I was running it that hard but idk.

 

[Rolltide]

I've had that happen with my 455 PT as well as a few other rimfires. I'm looking forward to other poster's experiences.

 

[chadrp]

Here is a pic of the bolt, haven't gotten the sear out yet.

 

[chadrp]

 

[PabloM]

My 455’s bolt will come out once in a while if you’re too aggressive. At a match recently others commented that it’s not uncommon and just to take it easy on the bolt. It’s a short throw so it’s easy to yank on it too hard. It happened to me maybe 3 times out of 300 rounds but then never again once I started to ease up on it. I have a Timney trigger in mine so I’m not sure it’s the fault of any of the trigger parts, stock or 3rd party.

 

[accurate obsession]

That's exactly whats happening, the impact of cycling is rounding over the stop on the bolt. Bolt isn't hardened and the sear is so it's a no brainer, hammer-hammer-hammer. We all just have to be aware and not cycle the .22 trainers like our center fire rifles.

 

[chadrp]

That's what I figured. I guess being new to competing with it, I'm sure I'm harder on it than I realize trying to be quick with it.

Hopefully a little filing can save it or I guess I'll chalk it up to "experience "