6br issues

[Sleepyhollow]

Sunday I loaded up 25 rounds and set down to shoot. Gun shot in the low .3's as usual with my load. Shot 3 rounds of 5 when all of sudden groups open up to like 1". When inside clean the rifle still Nothing small then 3/4". What has happen ? Everything tight

 

[HTSmith]

Not smart enough to diagnose but I'll share a couple of experiences of mine in a similar situation. In the first one what I thought was a clean barrel was not--not even close. The carbon had accumulated heavy in the first few inches of the barrel. Took a couple of Iosso cleanings to get back shooting.

In the second case with several hundred rounds down the pipe I had lost tune. Took a few tenths more powder and lil longer seating depth to get it back shooting decent.

Couple of things to think about.

 

[AlNyhus]

If everything externally is fine, it's time to plop another scope on it. -Al

 

[docmusk19]

Also not smart enough to diagnose but will share an experience. The chamber needs to be clean clean - no left over solvent or case lube. Use a shotgun swab with brake cleaner to get that area clean and then let dry. Make sure your cases are clean as well - again no left over case lube etc

 

[docmusk19]

Also not smart enough to diagnose but will share an experience. The chamber needs to be clean clean - no left over solvent or case lube. Use a shotgun swab with brake cleaner to get that area clean and then let dry. Make sure your cases are clean as well - again no left over case lube etc

I will also add that my loads are noticeably different with temp and humidity variances. My summer load may require a bump in juice. Not quite as bad as what you explained, but it could easily be a combination of things.

How long has it sat in the safe is another question. I would check my bedding to be sure I didn’t have any solvent soften up a couple spots.

 

[Charlie-NY]

Also not smart enough to diagnose but will share an experience. The chamber needs to be clean clean - no left over solvent or case lube. Use a shotgun swab with brake cleaner to get that area clean and then let dry. Make sure your cases are clean as well - again no left over case lube etc

I'm having a hard time getting ALL the Imperial sizing wax off of my brass. I've tried cleaning with a dry towel, cleaning with a little alcohol and even SS pin tumbling. None of these methods seems to remove all the wax. Cases still feel slippery, especially the cases cleaned with 91% alcohol.

Any recommendations?

 

[Sleepyhollow]

I will also add that my loads are noticeably different with temp and humidity variances. My summer load may require a bump in juice. Not quite as bad as what you explained, but it could easily be a combination of things.

How long has it sat in the safe is another question. I would check my bedding to be sure I didn’t have any solvent soften up a couple spots.

Shot every day. One thing since mentioned was temps different. It's been hot and humid here in Missouri. Been loading 30.3 N150. may need to back off a couple ticks. Thanks everyone for the responses

 

[docmusk19]

I'm having a hard time getting ALL the Imperial sizing wax off of my brass. I've tried cleaning with a dry towel, cleaning with a little alcohol and even SS pin tumbling. None of these methods seems to remove all the wax. Cases still feel slippery, especially the cases cleaned with 91% alcohol.

Any recommendations?

I use brake cleaner. I spray some on a rag, wipe after resizing and then wipe each loaded round before heading out. That paired with a clean chamber make a significant difference for me.

 

[Jet]

Double check your action screws and scope mount. Check your rest for loose hardware.

 

[Lance21]

I'm having a hard time getting ALL the Imperial sizing wax off of my brass. I've tried cleaning with a dry towel, cleaning with a little alcohol and even SS pin tumbling. None of these methods seems to remove all the wax. Cases still feel slippery, especially the cases cleaned with 91% alcohol.

Any recommendations?

Tumble in white rice. Will clean the outside well while leaving carbon in the necks, which you want.

 

[Kracken McGraw]

I'm having a hard time getting ALL the Imperial sizing wax off of my brass. I've tried cleaning with a dry towel, cleaning with a little alcohol and even SS pin tumbling. None of these methods seems to remove all the wax. Cases still feel slippery, especially the cases cleaned with 91% alcohol.

Any recommendations?

If your cleaning the Imperial off good with a towel, I bet that’s not your problem.

 

[Charlie-NY]

Tumble in white rice. Will clean the outside well while leaving carbon in the necks, which you want.

This has been recommended as a general cleaner in-lieu-of using SS pins which affect the case mouths. I think I'll give it a try.

But .... wouldn't that make the rice taste funny?

 

[Charlie-NY]

If your cleaning the Imperial off good with a towel, I bet that’s not your problem.

I had been using a dry towel for some time not but it didn't get it all off, so I tried the other ideas which were less effective. I was hoping that there was a simple solution that I overlooked.

I was very surprised that the SS pin tumbler and plenty of Dawn dish soap did not work that well after a 25-30 min tumble.

 

[Lone Hunter]

I had been using a dry towel for some time not but it didn't get it all off, so I tried the other ideas which were less effective. I was hoping that there was a simple solution that I overlooked.

I was very surprised that the SS pin tumbler and plenty of Dawn dish soap did not work that well after a 25-30 min tumble.

Was your water HOT when you tumbled? I found it makes a difference with hot water on tumbling and then rinse well with cold water.

 

[Charlie-NY]

Was your water HOT when you tumbled? I found it makes a difference with hot water on tumbling and then rinse well with cold water.

No - I generally tumble in luke warm water.

 

[TerryPohl]

Hope this is not your problem but I have been in a match doing well and everything went to crap, after the match bore scoped and had a porchen of a rifling pealed out, like I said hope this is not your problem.
Terry

 

[Sleepyhollow]

Hope this is not your problem but I have been in a match doing well and everything went to crap, after the match bore scoped and had a porchen of a rifling pealed out, like I said hope this is not your problem.
Terry

Terry I'm going to bore scope it here in a few mins. I hope thats not it either

 

[X-Caveman]

Another vote for a broken scope. A 6BR shooting consistently 3/4-1 MOA is just grossly out of whack - assuming you are at 100 yards and not horrendous conditions.

 

[Sleepyhollow]

Issue found I believe. It appears my throat has grew by about .008 so I chased my seating depth by 0.008 and back to bug holes !! Well do alittle more testing tomorrow.

 

[creedfan]

firing pen spring when was it last replaced? when they go they go fast.