mannythegreek
06-16-12, 09:27
Hello,
I was wondering if anyone had any knowledge of spring fatigue in magazines that are fully loaded with 300 blk (or even partially loaded).
From wikipedia, an average 62 grain projectile in 5.56 weighs 11.8 grams or about 183 grains in total. 30 rounds of 5.56 should weigh 354 grams or 5490 grains in total .
30 rounds of 300 blk should weigh around 7300 grains or 470 grams. Do you think this would cause an issue with spring fatigue?
Although the pressures of both rounds are equal (as explained in an earlier post) What about feeding the larger (and heavier!) cartridge from the magazine? I realize that changing buffer weights is a no-no (as described by other users who have done this), but it would seem that the heavier cartridge would ideally require a heavier spring. Would appreciate your responses!
-MannytheGreek
https://en.wikipedia.org/wiki/5.56%C3%9745mm_NATO
I was wondering if anyone had any knowledge of spring fatigue in magazines that are fully loaded with 300 blk (or even partially loaded).
From wikipedia, an average 62 grain projectile in 5.56 weighs 11.8 grams or about 183 grains in total. 30 rounds of 5.56 should weigh 354 grams or 5490 grains in total .
30 rounds of 300 blk should weigh around 7300 grains or 470 grams. Do you think this would cause an issue with spring fatigue?
Although the pressures of both rounds are equal (as explained in an earlier post) What about feeding the larger (and heavier!) cartridge from the magazine? I realize that changing buffer weights is a no-no (as described by other users who have done this), but it would seem that the heavier cartridge would ideally require a heavier spring. Would appreciate your responses!
-MannytheGreek
https://en.wikipedia.org/wiki/5.56%C3%9745mm_NATO