Winchester varmint x ammunition 223 55 grain polymer tip INFO

[powerstroke79]

Good morning,I recived some loose 223 ammo that looks to be winchester varmint x ammunition. Rounds have light primmer strikes and look to have been chewed on. I took them apart to used the bass. Before i did i took COAL and weight of charge for 10 rounds. I was very surprised by the wide range of numbers. Any one know what kind of powder Winchester uses for these rounds?

COAL
2.195
2.200
2.202
2.208
2.206
2.205
2.190
2.200
2.191
2.206

Charges
25.8
25.6
25.5
25.3
25.4
25.5
25.8
25.5
25.5
25.3

http://i153.photobucket.com/albums/s205/powerstroke79/20161210_151151_zpsxte0kb2b.jpg (http://s153.photobucket.com/user/powerstroke79/media/20161210_151151_zpsxte0kb2b.jpg.html)
http://i153.photobucket.com/albums/s205/powerstroke79/20161210_151159_zpsmzpk57of.jpg (http://s153.photobucket.com/user/powerstroke79/media/20161210_151159_zpsmzpk57of.jpg.html)
http://i153.photobucket.com/albums/s205/powerstroke79/20161210_151208_zpsg2q3mkit.jpg (http://s153.photobucket.com/user/powerstroke79/media/20161210_151208_zpsg2q3mkit.jpg.html)
http://i153.photobucket.com/albums/s205/powerstroke79/20161210_151228_zpsmjdz3c5m.jpg (http://s153.photobucket.com/user/powerstroke79/media/20161210_151228_zpsmjdz3c5m.jpg.html)
http://i153.photobucket.com/albums/s205/powerstroke79/20161210_155238_zpstcaz9ero.jpg (http://s153.photobucket.com/user/powerstroke79/media/20161210_155238_zpstcaz9ero.jpg.html)

[Jamnanc]

Chootem.

[Jamnanc]

Looks like cfe223 or w748. ETA that's a charge weight that makes sense for 748. Right in the middle of the data.