I read where Lapua developed a NEW version of the .308 Winchester cartridge that has a small BR-style primer pocket. Apparently it will be introduced at the upcoming Shot Show.

As a 100/200/300 BR competition 6PPC shooter, I've got a "thing" for small rifle primers. It has got me to thinking about necking down the new 308 Lapua case a creating a 6x308. I'm confident that I'm not the first person to consider necking down a 308 and wondered what I'm missing? I've searched a few forums and don't find much.

Any comments (like you've gone crazy) would be appreciated.

Thanks.

You would have a 243 that uses SR primers. You might want to neck down in 2 steps, i.e. 260 then 243.

quote:

Originally posted by Jeff Welker:
I read where Lapua developed a NEW version of the .308 Winchester cartridge that has a small BR-style primer pocket. Apparently it will be introduced at the upcoming Shot Show.

That will be a copy of the old 22 BR BASIC case made by Remington in the past .A 308 Win case with thinner case walls and small primer pocket

I believe you may be referring to the new 6.5x47 case that Lapua introduced a year or so ago. 308 head size with the BR shoulder and small primer pocket. Makes a great 30x47 case for Hunter Class score shooting. Has already been necked to 6mm, being known as the 6x47 Lapua.

Rem made a 308 case small primer pocket in cold weather get alot of hang fires. I forgot who made the 22 wildcat off that case.


Jeff you might want to get on the BR site
http://www.benchrest.com/

that old Rem 308 been wildcatted alot. Nothing new IMHO

The 22 wildcat was by Jim Carmichael. It was the CHeetah. Capitol C for Carmichael and capitol H for Fred Huntington. There were two versions one with the standard 20 degree shoulder and one with a 40 degree shoulder. You are correct about the "hangfires" in cold weather. The CHeetah was always better when using 243 brass to form cases.

Here the deal on those 308 cases from 6mmbr

308 Lapua Palma — Lapua to Introduce a Small Primer .308 Winchester Variant
Filed under: Bullets, Brass, Ammo, New Product, News, Reloading — Tags: .308 Winchester, Lapua, Palma, Primer — Editor @ 6 am
Adam Braverman of Nammo-Lapua just confirmed that Lapua, at the behest of the U.S. Palma team, has been quietly developing a NEW version of the .308 Winchester cartridge that has a small BR-style primer pocket. That’s right, this is no joke. Lapua has crafted small primer pocket .308 Winchester brass that will be introduced at SHOT Show in Las Vegas (Jan. 19-22).



The new .308 variant is identical to Lapua’s current .308 match brass with the exception of the primer pocket. The brass will be head-stamped “.308 Win Lapua Palma”.

FLASH HOLES: The flash-hole size for the current pre-production .308 Lapua Palma brass is 1.5mm (.059″), the same as Lapua 6mmBR and 220 Russian brass. Lapua spokesmen were not certain if the flash hole size will change for the regular production brass. Note: if you have a Redding .308 die, you can ask Redding for a smaller decapping rod tip (.057″) to use with the new brass.

Tests Reveal Better ES and SD with Small Primers
Initial tests of the small primer pocket .308 by U.S. Palma team members have been very promising. The small primer pocket case seems to have advantages in both accuracy and the ability to handle high-pressure loads. However, the primary improvement found with the smaller primer is reduced ES and SD. Palma Team members have found that, with almost every brand of primer tested (small vs. large), the smaller version has yielded reduced Extreme Spread and Standard Deviation. This pays dividends in 1000-yard shooting. Also, some testers believe that small primers are more consistent and require less sorting — and that there are more varieties of small primers that seem to work really well in the .308 case. Moreover, the small primer types are more uniform, from lot to lot, than are large primers, according to some testers. More info will follow later today.

Ahhh, the US Palma Team. Never more than twenty-five years behind the curve. I have a couple hundred of the old Remington 308 Basic cases. As long as they stick to shooting in the summer, they will do well. I think about 45-degrees was where I started seeing problems with my 308 Hunter Class rifle. Nothing matches the fun of a hangfire shooting a 308 free recoil. Even a 308 kicks when it has an aluminum butt plate and an inch running start at your shoulder from the bench.

I have a suggestion for the 2020 Team. Take the 284 Winchester case and neck it down to 6.5mm caliber. They could call it the 6,5x284 or something catchy like that.

Rich
Rich

Idaho;

Correct me if I am wrong, but is not Palma limited to 308/762 NATO and 155 max bullets? I see the NRA rules also allow the 223/556 NATO now.

Kinda like NASCAR-limit cars, allow the skill of the driver to win...

NRA Long Range, now that is another story...

ref. the 6.5/284- a fellow shooter made one up with a Satern SS barrel, the throat moved .2" in less than 500 shots using a standard recipe and 142 grain SMKs, it kicked butt until halfway through the MO state mid range championship match this fall.

Huh, I was under the impression that the Palma shooters were required to shoot only 308 Win. with ammo supplied by the host country.

quote:

Originally posted by DocEd:
Huh, I was under the impression that the Palma shooters were required to shoot only 308 Win. with ammo supplied by the host country.

I could be wrong but that rule you mention is for the Palma Team only.

Tom, you may be right. I don't follow the Palma matches that close. I believe Rich has a point, about the 6.5x284, as more and more are seen in Longrange Highpower every year.

DocEd, they have Div "A",Div "B" and Div "C" and they only have one Palma caliber in "A" two in "B" "C" is F class. Latest issue of PS magazine they had article 2009 Rocky Mountain Palma Matches @ Whittington was 800,900 and 1000yds iron sites 308 or 223.

After some research I also learned that the host country no longer supplies the ammunition. Shooters are allowed to bring their own as long as it is a 308 using a bullet of 154-156 gr. This is for the International Match.

Look at 6mm norma XC.