In a recent 20 shot /10min shooting competition, with my 550 .308 , i fed ammo from the magazine, and had just one, so it took me more time than expected extracting and feeding the magazine every 4 shots, resulting in a final hurry trying to place the last 6 shots within the time limit, with the expected loss in concentration and accuracy. I know it was my fault not taking care of time and also only taking a magazine, due to my inexperience.
In order to gain efficiency, is it possible to feed ammo directly to the chamber as in a push control feed system ? Several postings say it wears out the extraction claws. Is it true ?