7mm JRS Info?
- Thread starter RustyPin
- Start date
Kurz
Silver $$ Contributor
I would suggest contacting him on Facebook 
or by using this information as published:
https://www.whitepages.com/name/John-Robert-Sundra/Waxhaw-NC/rze1a8q
The 7mm JRS is an extended version of the .280 AI since the shoulder is pushed forward, shortening the neck and increasing the case capacity over the standard AI version. This means that you have to first neck up each case then neck it down for actual headspace which is achieved through fireforming. The big three reamer makers should have the print on hand although I did not see it on PTG's reamer list, after a quick scan, for some reason.
Personally, I consider several other cartridges to be as interesting:
7mm Blaser
7x66 SE vom Hofe
7mm RSAUM
7mm-300 Norma Magnum
This is the standard 280 AI case/cartridge dimensions but only the body applies to the JRS, not the shoulder and neck:
or by using this information as published:https://www.whitepages.com/name/John-Robert-Sundra/Waxhaw-NC/rze1a8q
The 7mm JRS is an extended version of the .280 AI since the shoulder is pushed forward, shortening the neck and increasing the case capacity over the standard AI version. This means that you have to first neck up each case then neck it down for actual headspace which is achieved through fireforming. The big three reamer makers should have the print on hand although I did not see it on PTG's reamer list, after a quick scan, for some reason.
Personally, I consider several other cartridges to be as interesting:
7mm Blaser
7x66 SE vom Hofe
7mm RSAUM
7mm-300 Norma Magnum
This is the standard 280 AI case/cartridge dimensions but only the body applies to the JRS, not the shoulder and neck:
I am aware of this Cartridge. I did a price comparison between the .270, the 30-06, and the 7mmX64 on AMMO SEEK, I sought something less expensive than the .280. The Volume of the 7mmX64 is not at all comparable to the .280AI let alone the JRS, but thanks anyway. I am reminded all the time how the Forums get astray on topic from the original post. I appreciate the input, just not the answers I'm seeking. Spooky Times Ahead, MuHuHaHaaHaaaa.....
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