Differences in magazine dimensions for std/magnum on L61/A-series/L691

[cmk]

Hi,

Would anybody who has both a standard cartridge and and a magnum one be able to tell me what the difference is in the magazine dimensions.

Standard: https://www.midwestgunworks.com/page/mgwi/prod/S5940485
Magnum: https://www.midwestgunworks.com/page/mgwi/prod/S5940496

I have an AV that I have had rebarrelled into a 404 Jeffery. This is a considerably fatter cartridge than a the standard '06 width. In order to feed optimally, the magazine should be wide enough so that each cartridge case gets support from the magazine walls and the surrounding cartridges.

Longer and better explanation here: http://castboolits.gunloads.com/sho...VZ-24-Mauser&p=3946608&viewfull=1#post3946608

The ideal dimensions for the magazine width would be (for the 404 Jeffery)
25.8mm, or 1.013" in the rear
23.8mm, or 0.938" in the front

If anyone has the time to look and measure I'd be very grateful.

/cmk

 

[cmk]

No one?

 

[Tomball]

Hi,

Would anybody who has both a standard cartridge and and a magnum one be able to tell me what the difference is in the magazine dimensions.

Standard: https://www.midwestgunworks.com/page/mgwi/prod/S5940485
Magnum: https://www.midwestgunworks.com/page/mgwi/prod/S5940496

I have an AV that I have had rebarrelled into a 404 Jeffery. This is a considerably fatter cartridge than a the standard '06 width. In order to feed optimally, the magazine should be wide enough so that each cartridge case gets support from the magazine walls and the surrounding cartridges.

Longer and better explanation here: http://castboolits.gunloads.com/sho...VZ-24-Mauser&p=3946608&viewfull=1#post3946608

The ideal dimensions for the magazine width would be (for the 404 Jeffery)
25.8mm, or 1.013" in the rear
23.8mm, or 0.938" in the front

If anyone has the time to look and measure I'd be very grateful.

/cmk

I measured an AV338 mag 3.60” long, .765” front and .885” rear. I also measured L61R long action( non mag) early serial number. 3.645”long,.765” front, .800” mid and .968” rear. I had this part in my hand for measuring. The AV I measured in the rifle so I could be off a couple thousands . Hope this helps.

 

[cmk]

Thanks for finding out Tomball.

I guess I could have been more clear, though. What I meant about the 'front' measurement is where the shoulder of the cartridge starts, i.e. it is only relevant where the sides of the cartridge body touches the magazine sidewalls.

Also, perhaps the rear measurement for the 338 WM magazine should read .985" rather than .885"? Otherwise it would be smaller than the standard magazine
Nevertheless, it is still smaller than what would be optimal for that cartridge.

Thanks again for taking the time.

/cmk

 

[Tomball]

Thanks for finding out Tomball.

I guess I could have been more clear, though. What I meant about the 'front' measurement is where the shoulder of the cartridge starts, i.e. it is only relevant where the sides of the cartridge body touches the magazine sidewalls.

Also, perhaps the rear measurement for the 338 WM magazine should read .985" rather than .885"? Otherwise it would be smaller than the standard magazine
Nevertheless, it is still smaller than what would be optimal for that cartridge.

Thanks again for taking the time.

/cmk

I just removed the 338 action from the stock and measured again to verify measurements. Rear was .894” with a digital mic. All original as I bought the rifle new in 87. I then measured Sako V 7 mm ultra mag SS with rear of 1.03” for length of 2.50” where it then tapered to .890”for remainder to front. Outline of the cartridge like you mentioned above. This is closest to your required measurement.