408 cheytac load data

[ShawBR]

Hello . Looking for load data info if anyone has some experience . I have a 408 Cheytac with a 29" barrel , going to try RL33 with a 420 grain cutting edge bullets. Also have ran the numbers using quick load. It is saying 144 grains of powder, does this seem close?? Cutting edge emailed me some data and they are give a example using 415 grain bullets with RL33 using 133 grains of powder.. any info would be greatly appreciated!!!

 

[Bravo 4]

This is from the .408 I had a few years back:
28" Lawton
Bertram brass
Fed215M primer
415 grain Cutting Edge MTH
147 grains RL-33 for 2900 FPS