Delayed firing pin ignition, Huge SD and ES

[boltfluter]

I once ran into this problem years ago with a .17 Remington. With Fed 205m primers and H335 it was like a muzzle loader going off. 1 or 2 millisecond delay and then boom. Changing primers fixed the issue. Good luck!
Paul

 

[LVLAaron]

I had a 1k box of the beloved 7.5 Remington primers I picked up off the shelf at Cabelas back in the glory days that gave me absolute fits as well. Ended up spraying them all with WD-40 and tossing them out.

 

[DaveTooley]

Just a thought.
Once I had some Wolf LR primers that acted like a fuse rather than explosive. I wasn't seating them deep enough. I was getting a sizzle then boom. I couldn't tell it shooting the rifle but observers could.

 

[Dusty Stevens]

Just a thought.
Once I had some Wolf LR primers that acted like a fuse rather than explosive. I wasn't seating them deep enough. I was getting a sizzle then boom. I couldn't tell it shooting the rifle but observers could.

Flintlock ignition. Lets the vibrations from the firing pin drop dissipate before the bullet goes. Seems like a good idea you had there

 

[effendude]

As others have stated, try different primers. I had a similar experience with both Wolf SRM and and a particular lot of CCI BR4's a few years back. Slow ignition was weird and kinda creepy.
Scott

 

[Twdmar]

Is this the rifle that got all the solvent leaked into the bedding?

 

[Alex Wheeler]

Flintlock ignition. Lets the vibrations from the firing pin drop dissipate before the bullet goes. Seems like a good idea you had there

Now you may be on go something

 

[L.Sherm]

Alex have you ever noticed any difference in a factory 700 bolt having the bolt bushed vrs non bushed as far as improving ignition mainly accuracy improvement everything else being equal.
Or anybody else for that matter.

 

[Dusty Stevens]

Alex have you ever noticed any difference in a factory 700 bolt having the bolt bushed vrs non bushed as far as improving ignition mainly accuracy improvement everything else being equal.
Or anybody else for that matter.

I have. Anything that makes ignition more consistent is a bonus

 

[L.Sherm]

I have. Anything that makes ignition more consistent is a bonus

Thanks Dusty

 

[Alex Wheeler]

Alex have you ever noticed any difference in a factory 700 bolt having the bolt bushed vrs non bushed as far as improving ignition mainly accuracy improvement everything else being equal.
Or anybody else for that matter.

I stopped messing with rems a while ago. But much smaller things than that can transform a rifle. The action is everything. I have been harping on this for years. You will always get that guy that says he used an action out of the box and it broke records or won a Nats, but thats just dumb luck. The reason for consistent winning rifles (not one or two) is actions, actions, actions. A good action will always get good barrels.

 

[L.Sherm]

Its one of those deals were the gun is up and running and has been for awhile shoots pretty good for a hunting rifle. I'm just wondering if its one of those deals were the benefit vrs reward to have the bolt bushed typical 700 deal on it.

 

[Alex Wheeler]

Yes, theres no guidance in a 700. Bushing it guides the pin. But it has to be done right. Most are not bushed straight and bind the pin ime.

 

[boltfluter]

I just bushed the back of my factory 700 bolt to the action, and firing pin release and energy seems much better. Groove cut for bushing. Just seems like a cleaner release. Bushing the firing pin is up next. I would guesstimate the FP energy is up by at least 25 percent. Fun stuff!

Paul

 

[msalm]

out of curiosity, what chamber / barrel was this with? If with the 6 creed, are they SRP brass and do they have a .060” flash hole? I had delayed ignition with a 22 creed and solved it by using an internal flash hole debur tool with the .080” drill tip. Not enough flash for the powder I was using.

 

[XTR]

@Rtheurer , You aren't still shooting Tula primers are you?

They worked great for me till about 2 or three yrs ago I started getting hang fires, esp on cold mornings (e.g., some early mornings at Raton) Switched to 205m's and the problem went away.

 

[jelenko]

Russ - This is a great mystery - you gotta tell us what's going on.

 

[MGYSGT]

I am having trouble understanding why a trigger or firing pin would give you 500 fps or even 100 fps variance in muzzle velocity. I would think powder or primer would be the culprit. Change lot# lately?

 

[jelenko]

Just FYI. Russ used to be responsible for loading ammo for the AMU rifle team - this is far from his first rodeo.

 

[Rtheurer]

Just FYI. Russ used to be responsible for loading ammo for the AMU rifle team - this is far from his first rodeo.

US ARMY Reserve Service Rifle Team.