338 win mag to 338 edge

[joshua]

Hi i have rem 700 in 338 win mag and was wondering about going to 338 edge at some time and did not no if i could us this action also. right now im pusshing a 250 grn bullet at 2600 fps with a 23 inch barrel if i whent to say 28 inch hart could i get 2800 fps and still be accurate. I have a lot of brass for the 338 win mag thanks​