Yes, this magazine should fit those rifles.
It's going to be unlikely you're going to get 300 PRC to fit in these magazines. These magazines will fit up to 3.50" internal OAL - most 300 PRC rounds are exceeding that.
The Magpul Industries PMAG AC L, Magazines hold 5 rounds.
The Magpul Industries PMAG AC L, Magazines will work in the Magpul Hunter 700L stock. This stock can be found at the link below.
https://www.opticsplanet.com/magpul-industries-hunter-700l-stock-for-remington-700-long-action-rifle.html
These Magpul Industries PMAG AC L, Magazines will not work for 6.5PRC. Magpul Industries currently does not have PMAG for the 6.5 PRC.
These Magpul Industries PMAG AC L, Magazines will not work for 6.5PRC. Magpul Industries currently does not have PMAG for the 6.5 PRC.
Magpul does not have a 10 round Magpul Industries PMAG AC L, Magazine.
Yes the Magpul Industries PMAG AC L Magnum model should work with the Bergara B14 HMR in 300 Win Mag. The Bergara B-14 HMR accepts AICS pattern magazines and these Magpul Industries PMAG AC L, Magazines are AICS compatible. You will need model number MAG698BLK.
This Magpul Industries PMAG will only fit a cartridge with an overall length of up to 3.50". 300 Weatherby Mag has an overall length of 3.562" which exceeds this magazines capacity.
Yes. The Magpul Industries PMAG AC L, Magazine (300 Winchester Magnum) will support a cartridge overall length of up to 3.50". This includes 7mm Mag, .257 Weatherby, .264 Winchester, .270 Weatherby and others.