Please Read Before Reloading!

[NoslerInfo]

Please Read Before Reloading!

WARNING

RELOADING METALLIC CENTERFIRE
CARTRIDGES CAN BE DANGEROUS!

Careless or incorrect handloading procedures can result in serious
personal injury. Handloading should only be done after thorough
and complete instruction. Since individual handloading procedures,
operations and safety practices are beyond our control, we disclaim
all liability for any damages which may result.
Reloading any cartridge requires a familiarity with safe, conservative
reloading practices. When combined with personal discipline and
attention to detail, such practices can help create a margin of safety for
both the reloader and the shooter.

1. NEVER BEGIN LOADING WITH THE MAXIMUM POWDER
CHARGE SHOWN IN THESE RELOADING DATATABLES,
REGARDLESS OF YOUR EXPERIENCE.

2. NEVER EXCEED MAXIMUM LOADS BECAUSE EXCESSIVE
CHAMBER PRESSURE WILL RESULT.

3. DISCONTINUE FIRING AT THE FIRST SIGN OF EXCESSIVE
PRESSURE OR UPON NOTICING A CHANGE IN THE REPORT
OF THE FIREARM.

Lot-to-lot variations, design changes, or specification changes that are
beyond our control may occur in certain components mentioned in this
website. To safely use this or any other guide or manual, you must keep yourself well informed on the technical progress of reloading. It is our belief that the information offered will result in safe operation if the proper equipment and components are employed in a reasonable manner. Because Nosler, Inc. has no control over the actual components selected, the manner in which the components are assembled, or the condition or quality of firearms used, no responsibility, either expressed or implied is assumed for the use of this guide or for any other Nosler product. In no event shall Nosler, Inc. be liable for any damages resulting from the use of this website, whether in contract, tort or otherwise, Including consequential damages.

Please Click the Link Below for Nosler Load Data

Nosler Load Data

 

[Herman Botha 63]

Good day.
Not sure if I am on the correct forum. I own a .270 Musgrave. I am reloading with Peregrine 132gr points PMP(52.5gr S365 powder) cases for plus minus 3 years . Used CCI 200 primers. All went well until last year. CCI primers were not available and I use Winchester WLR primers. After a few sessions it started to blow the primers out. So bad that I had to force the action open. Braking the extractor mech. had the problem twice. First I thought it was the cases so I bought Norma cases. Had the same problem. Our Gunsmith said I am overloading. But I am in spec's with peregrine limits(51- 54gr)
I suspect the primer are too hot. Will load with other primers.
Anybody experience the same problem??

 

[remingtonman_25_06]

WInchester has been known to have a couple bad lots of primers the last few years. If you do a web search, you'll see several very experienced guys all have had the same issues. I blew 2 primers out and had 2 gas leaks on a 6 creed with Peterson brass at 1g below book max. I did a bit of research and came to the conclusion it had to be the WLR primers. I got a hold of their customer service and explained the issue. I was told they would send a return shipping box/label for the remaining 2 bricks I had, and they would replace them if they found they were bad. Well about 2 weeks later, I had 2 new bricks show up. I haven't used them yet, as I'm honestly a little gun shy now. My plan is to sell them, and replace with a different primer. I don't really trust them anymore. Or just save them for a rainy day and an absolute last resort...

 

[RL338]

When 1 component is changed you need to start low and work up. Wether it is primer , bullets , brass , or powder manufacturing lots do change.

 

[Charlie-NY]

The pressure signs that you described would indicate an extreme overpressure condition. I doubt that just a primer change could move the load from a safe pressure level to the conditions mentioned. You may have a combination of issues that are contributing to the problem. I would pull those reloads apart and start over with a significantly reduced charge and work back up.

 

[remingtonman_25_06]

Like I said above, it is definitely a Winchester primer issue. A simple Google search will show and tell all you need to know about them. But, I'll post some pics anyway. This was just on 1 thread over on AS, 4 or 5 different instances. So unless we all just forgot how to handload, I'd say there's a problem. All instances below were book load specs. No hot loading going on. They scarred my bolt face, along with several other guys. Send them back to Winchester, or throw them in the trash before you do anymore damage to your rifle. Winchester has been very good about everything and doing everything they can to make it right with those who have had issues.

In no way does a simple primer swap go from having a normal safe load, to blowing primers and having gas leaks. The most you'll ever see from a primer swap is usually only like 25fps. That doesn't make a poops worth of difference and take a normal safe load, to a dangerous over pressure load that blows primers and has severe gas leaks.

 

[Ralt71]

In no way does a simple primer swap go from having a normal safe load, to blowing primers and having gas leaks. The most you'll ever see from a primer swap is usually only like 25fps. That doesn't make a poops worth of difference and take a normal safe load, to a dangerous over pressure load that blows primers and has severe gas leaks.

Couldn't agree more. The first comment to OP should be reaching out to Winchester, doing a search on the lot number of primers he got and stop shooting that load until he figures out what is going on with Primers.

 

[FOTIS]

Good day.
Not sure if I am on the correct forum. I own a .270 Musgrave. I am reloading with Peregrine 132gr points PMP(52.5gr S365 powder) cases for plus minus 3 years . Used CCI 200 primers. All went well until last year. CCI primers were not available and I use Winchester WLR primers. After a few sessions it started to blow the primers out. So bad that I had to force the action open. Braking the extractor mech. had the problem twice. First I thought it was the cases so I bought Norma cases. Had the same problem. Our Gunsmith said I am overloading. But I am in spec's with peregrine limits(51- 54gr)
I suspect the primer are too hot. Will load with other primers.
Anybody experience the same problem??

CCI 200 is the "coldest" LR primer while Win 120 is the "hottest". I have seen 200 FPS differences in my 25-06 between those two.

I am talking about standard LR primers not Magnum.

 

[Ralt71]

CCI 200 is the "coldest" LR primer while Win 120 is the "hottest". I have seen 200 FPS differences in my 25-06 between those two.

I am talking about standard LR primers not Magnum.

I myself have not seen a swing that large, but I don't have much experience with the 25-06 and hope to never expand on it haha. I can't sit here and say that I remember ever swing in primer change I have ever made, but i would venture to say I don't recall even 80fps. Don't know that I've went from CCI 200's to Winny 120's either.

 

[remingtonman_25_06]

Ya, if that was the case, guys would just run a magnum primer in a standard case and get magnum velocities right? I don't think that's how it works sadly. I also don't believe it matters what case it's from. I've done primer testing from 222s through 300 RUMs and never seen such swings in velocity or pressure simply by changing a primer. There's a common misconception that a guy should " start low and work up" when changing primers, and that's not really true either. The primer is typically the last component that is changed or swapped when fine tuning a load. And it's as simple as a primer swap and keeping everything else the same to see if groups, and or es/sds tighten up. You don't rework the load and switch a primer, because you don't ever change 2 things at once when dialing something in. That's why I don't believe primers will rarely ever give more than a 25-50fps change in extreme cases. The most recent one I did was a 240 wby where I used WLR standard primers and then tried CCI 250 mag primers after settling on a load with 105 hpbts. The mag primer only added like 30fps, while the groups and es/sd doubled. It surely didn't blow my rifle up, blow the primers out the case, or blow gas past the primer.

I'm not calling anyone a liar, but anything over 50 fps from a simple primer swap makes me think something else ain't quite right, your cronograph is broke, or it was just an anomaly.

All the above instances were normal load work ups with the WLR primers as the primary, and well under book max loads. No primer swapping.