22 Creed just keeps gettin faster

[Shootin25]

Not sure why, but my barrel keeps speeding up. At 265 rounds now and I find myself backing down the charge to stay in the node. Same powder, primer, and bullet lots. Same brass and brass prep.

How normal is this? And when should I expect it to settle down?

Thanks

 

[gman47564]

From what little i know it seems their all different.. I've had them settle down after 50 or so rounds and had others take close to 300 rounds.. i know this isnt much help to ya but your probably getting close..

 

[Shootin25]

From what little i know it seems their all different.. I've had them settle down after 50 or so rounds and had others take close to 300 rounds.. i know this isnt much help to ya but your probably getting close..

I hope I’m getting close, feel like I’ve already burned 1/4 the barrel life...

 

[Ranger188]

Most of my barrels settled in at about 120 or so.
My 22 creed took a full 200+ before it did.
Is this your 6.5 twist with the 95 SMKs?

 

[Matt_3479]

My 6mm creed is doing the same thing. After about 120 rounds I worked up a fantastic load shooting in the .2’s low .3’s at 3130fps and shot a match and for 100-400 yards it was lighting it up and then my pressure started building a bit, my groups were opening, my drops weren’t the same!

 

[Park ranger]

Are you leaving you powder in the hopper, not sealing it back in the original jug?

 

[mike a]

Are you leaving you powder in the hopper, not sealing it back in the original jug?

I am. How long is to long?

 

[LeeA]

Not sure why, but my barrel keeps speeding up. At 265 rounds now and I find myself backing down the charge to stay in the node. Same powder, primer, and bullet lots. Same brass and brass prep.

How normal is this? And when should I expect it to settle down?

Thanks

One thing worth checking is to see if you have a donut built up inside the base of the neck at the neck/shoulder junction. It is quite common with necked down wildcats. Very much constriction at this location can definitely raise pressures.
A way to check how much, is with a series of numbered drill shanks.

Lee

 

[Shootin25]

Most of my barrels settled in at about 120 or so.
My 22 creed took a full 200+ before it did.
Is this your 6.5 twist with the 95 SMKs?

It is the 6.5 with the 95’s. I’m not getting any pressure signs, just having a hard time keeping them at a consistent speed.

 

[Shootin25]

Are you leaving you powder in the hopper, not sealing it back in the original jug?

Yup. I leave the powder in the hopper and just add as required.

 

[Nightraider]

Until the bore is hardened, the velocity can and will increase. This is the real break in period, not 30rds. Most barrels are between 200-300rds until the surface of the bore is normalized and hard. After that it's all down hill.

 

[Mark W]

Are you leaving you powder in the hopper, not sealing it back in the original jug?

I do this as well. What is the significance?

 

[Shootin25]

Another question: this “carbon ring” that can develop in the bore, would that cause increased speeds? If so, how can one identify this problem without a bore scope?

Barrel has been cleaned after every 50-100 shots, and it cleans very easy. I’ve been using the same cleaners as with any other barrel.

 

[gman47564]

one thing I found after buying a bore scope was even though I thought I was getting my barrels clean I wasn't... a bore scope is invaluable in my opinion...nothing better than knowing what is really going on in your pipe...

 

[Wooten]

Another question: this “carbon ring” that can develop in the bore, would that cause increased speeds? If so, how can one identify this problem without a bore scope?

Barrel has been cleaned after every 50-100 shots, and it cleans very easy. I’ve been using the same cleaners as with any other barrel.

Iosso Paste on a patch and work the first few inches of the barrel. Make sure to concentrate on the throat. Then patch out until clean. (You will ne to recheck your "touch" measurement after this). If its a carbon ring, you should see speed come down after this.

 

[sawcarver]

I do this as well. What is the significance?

If its not sealed it can be picking up moisture depending on how humid of a climate you live in

 

[Shootin25]

If its not sealed it can be picking up moisture depending on how humid of a climate you live in

Humidity has been in the single digits lately.

 

[Capt. Oblivious]

Powder will also dry out and will then "speed up", powder needs to be stored around 40% humidity to maintain its "normal" characteristics. Best is to not leave it in a hopper but back in the original container

 

[Shootin25]

Powder will also dry out and will then "speed up", powder needs to be stored around 40% humidity to maintain its "normal" characteristics. Best is to not leave it in a hopper but back in the original container

Got it. Thanks.

I’ll be returning powder back to its original container moving forward.

 

[urbanrifleman]

You can add descicate packets to the jug.