Anyone seen this before? I've had issues with Nosler brass and loose primer pockets. This safe or ok?
https://i.ibb.co/2gt0C3H/456.jpg
https://i.ibb.co/x5sZmk1/123.jpghttps://ibb.co/Fgwky4C
https://ibb.co/q1n60SN
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Anyone seen this before? I've had issues with Nosler brass and loose primer pockets. This safe or ok?
https://i.ibb.co/2gt0C3H/456.jpg
https://i.ibb.co/x5sZmk1/123.jpghttps://ibb.co/Fgwky4C
https://ibb.co/q1n60SN
it is safe but really sucks
loads to hot for the brass and chamber
the loose primer leaks gas and burns the face.
it may simply be that the chamber is too large for the lads you want to shoot.
the brass too soft load too hot
Nosler brass appears to be garbage. I do starting to mid loads and primer pockets become loose after 2-3 firings. Some pieces get a little more.
i have shot nosler and not had that issue.
load data is not a bible..it is a guideline...if you are losing primer pockets and your boltface looks like that.
you are most likely TOO HOT
Quote:
Originally Posted by savman12
WHAT IS YOUR LOAD....all data bbl length oal bullet etc
30-06, 22" barrel
53-55gr of IMR 4350 with Accubond 180gr
It's been through the ringer with different powders and load testing.
Can I replace just the bolt face?
Why does the bolt face have end mill machine marks on it??
Yes you can easily replace the bolt face, but, you need to check headspace just to be on the safe side.
You need to find out the cause. By some new cases. Take 5 and load as normal to see how long they last. Take another 5 and reduce the load a bit and see how long they last.
what is your OAL, WHAT IS CASE VOL ?
Quote:
Originally Posted by savman12
I've been .20 - .100 off the lands which makes OAL vary depending on my bullet. Recently I've been using 3.330" w/ Nosler Accubond since I have two rifles with same catridge.Quote:
Originally Posted by mikeinco
I got Remington and Winchester brass with multiple loads of similar charges and the primer pockets are still very tight.
I've never measured case volume.
the pressure can easily be 59kpsi. almost max
my guess is a large chamber at the base.
what is the dia of once fired brass up 0.2 from the base
manufactures case volume DIFFERS BIG TIME.
YOU CANNOT ASSUME A LOAD IN WIN BRASS IS SAFE IN NORMA BRASS
Quote:
Originally Posted by savman12
After you mentioned that, I captured the first pic and enhanced it. It's swipe marksQuote:
Originally Posted by Kev1Doggy
from opening and closing the bolt. Savage probably could have done a better heat
treat. I've seen this on Argentine mil surplus Mauser bolts.
I know this and what best practice is. I'm just saying that I had bad experiences with Nosler brass. Primer pockets become bad quickly regardless of load. This has been reported on numerous sites. Even some brand new pieces of Nosler brass don't feel as tight as Win, Rem, etc with primer pockets. I had a few that were questionable without any firings.Quote:
Originally Posted by mikeinco
Also, just recently, I had 5 rounds not sized correctly in my last box causing a tight bolt close. Resized them and it was all good. I would assume the shoulder had issues.
The weird swirl marks on the outer edge is odd. My 300 Win 116 doesn't have that at all.Quote:
Originally Posted by Fuj'
They are endmill tracks......that's the way they were cut way back in the dark days. Most probably that rifle has an E or F prefix serial #.
very poor quality machine work.
i have used an end mill to resurface a savage bolt head....no marks like that...nice even flat surface.
Quote:
Originally Posted by sharpshooter
It's a 111 with an H serial number. Got it back around 2014.
Nosler brass can be crap. I had some 260 that did this. Mild loads. I will never buy Nosler brass again.
Quote:
Originally Posted by mikeinco
Smartest thing you have said this whole thread.
Sharpshooter. Was Savage attempting to remove the dish in the boltface? Why else would they use such relatively expensive extra operation.
You think it has a large chamber at base?
for the brass to move there has to be some where to go.
primer pockets enlarge in high pressure and or large chamber base.
I stand corrected. Looking again does show that a cutter about 1/3rdQuote:
Originally Posted by sharpshooter
the diameter size of the face was walked around the perimeter.
Erosion from leaking primers aside, it looks like a poor machining job, possibly while using a broken end mill. Before I'd chuck that bolt head, I take a brass case and stick some 400 grit wet/dry paper on the head using double stick tape, and chuck it into a drill press, or hand held drill. Then remove the extractor and ejector from the bolt head and polish the bolt head with progressively finer grits. You probably won't get all the defects out, but it'll look a whole lot better.
And just opened the headspace up somemore!
which when adjusted will reduce the bolt to bbl clearence
Quote:
Originally Posted by Kev1Doggy
It could be that the bolt head was left over old stock, I've seen this in several rifles that had 20 yr old parts in current production receivers. Most parts are mechanically the same, but cosmetically different. Savage currently uses 3 different vendors for bolt heads and can be identified by a dimple or 2 dimples machined into the tail. If it's an older version, it most likely has the larger clearance hole for the old fat firing pin......but it sure looks like an old version to me.
I'll just get another bolt face.... they are cheap. I would need to check headspace, correct?
Yes on check the head space. I haven't rented the gauges but there are sources to do so. I've only purchased them.
Quote:
Originally Posted by mikeinco
Unless you sand some of the material off the forward face......
There is nothing wrong with the functionality of a bolt head that has these endmill marks or a few leaky primer holes as long as it did not affect the firing pin or the firing pin hole. It is a cosmetic issue.
I agree. My .223 bolt head has a pretty good 'ring' on it when I had primer pockets enlarge on me. Still shoots 1/2MOA or better.