7.62, 308win brass SR or LR primer

[UndFrm]

New to reloading
How do I figure out what primer, SR or LR does the brass use?

I have the following brass from the factory ammo
7.62 PMC XTAC 147gr
308win S&P 180gr SP
308win Fed Gold Medal Match 185gr Berger


Thank you

 

[MK20]

Measure primer pocket and get back to us, or post pics.

Should all be LR though.

 

[UndFrm]

It seems like it's 0.21in but I am no expert, pics of PMC and Vmax

 

[RegionRat]

 

[supercorndogs]

Most 308 brass you find is going to be LRP.

 

[Aftermath]

You would be well served by reading and studying from one or more of the following books. To gain the most from any of the manuals listed, read and study the many pages before those that are dedicated to each individual cartridge.

Amazon product ASIN 148207379X

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Buy Handloading Manual for USD 42.99 | Speer

Shopping for the Handloading Manual - Learn more about the latest Education and other hunting, shooting or reloading gear at Speer.

www.speer.com

Reloading Manual – Sierra Bullets

www.sierrabullets.com

Hornady® 11th Edition Handbook of Cartridge Reloading - Hornady Manufacturing, Inc

The 11th Edition Handbook of Cartridge Reloading includes the latest Hornady bullets, along with new cartridges, powders and more.

www.hornady.com

Nosler Reloading Guide 9 - Hard Copy

Nosler Reloading Guide 9 - Hard Copy

www.nosler.com

Loading Manual

Our team worked very hard to create a thorough loading manual which gives the shooter everything they come to expect from a reloading manual.

bergerbullets.com

Lee Precision, Inc.. Modern Reloading 2nd Ed

Lee Modern Reloading book is one of the most comprehensive load data manuals, written by Richard Lee, printed in 2019.

leeprecision.com

 

[kilizyrag]

Another good resource.

https://xtremebullets.com/v/vspfiles/downloadables/RELOADING%20MANUAL2021.pdf

 

[RegionRat]

New to reloading
How do I figure out what primer, SR or LR does the brass use?

I have the following brass from the factory ammo
7.62 PMC XTAC 147gr
308win S&P 180gr SP
308win Fed Gold Medal Match 185gr Berger


Thank you

Not all ammo advertising is designed by folks with a user's background, especially internet mail order places. It makes shopping for some things like 308 W and 45 ACP brass tricky.

That said, some listings are better than others and if you follow the specific part numbers of SKU of ammo or brass, some of the better outfits will tell you the specific primer configuration used on that part number.

Once you find a good web supplier who tells you what size the primer is on a particular 308W case, you then have the part number identity for everywhere else that may not list the difference. Sometimes the word "Palma" brass can imply small primers. In the 45 ACP, it happened that "lead free" indoor practice ammo was noticed by bullseye competitors and they adopted it and added some small amount of the demand for it.

The small primer 308 brass exists for several reasons, most of those reasons were the popularity of the case design and adoption for match shooting. 308 is the parent case for many other designs which also share the demand for a SRP version, for example all the 6 BR variants. The use of the 308 cartridge as a "military" design qualified it for F-T/R and International Palma competition, so there was enough reason to have US and European firms create a small primer version for competitive use.

As time passed and the 300 Meter competitors adopted certain cartridges, many of those were also offered in both small and large primer configurations, so always do your homework and inspect your cases when dealing with brass that has a history of match use with more than one primer size.

 

[UndFrm]

Not all ammo advertising is designed by folks with a user's background, especially internet mail order places. It makes shopping for some things like 308 W and 45 ACP brass tricky.

That said, some listings are better than others and if you follow the specific part numbers of SKU of ammo or brass, some of the better outfits will tell you the specific primer configuration used on that part number.

Once you find a good web supplier who tells you what size the primer is on a particular 308W case, you then have the part number identity for everywhere else that may not list the difference. Sometimes the word "Palma" brass can imply small primers. In the 45 ACP, it happened that "lead free" indoor practice ammo was noticed by bullseye competitors and they adopted it and added some small amount of the demand for it.

The small primer 308 brass exists for several reasons, most of those reasons were the popularity of the case design and adoption for match shooting. 308 is the parent case for many other designs which also share the demand for a SRP version, for example all the 6 BR variants. The use of the 308 cartridge as a "military" design qualified it for F-T/R and International Palma competition, so there was enough reason to have US and European firms create a small primer version for competitive use.

As time passed and the 300 Meter competitors adopted certain cartridges, many of those were also offered in both small and large primer configurations, so always do your homework and inspect your cases when dealing with brass that has a history of match use with more than one primer size.

Yes, I noticed that if I'm specifically looking for new brass, brands like Lapua will mention SR or LR primer. As you mentioned, factory ammo which will be once fired and the brass reloaded isn't the easiest to find the primer size.
Thank you