How much N135 66gr 6br

[NC/Br Shooter]

I shot a ladder yesterday with some 135 and some barts avengers. 29.5 to 32.5 charges.
31.5 shot a O.150 . All groups 5 shots. Nothing over a .4. Was very pleased with it.

 

[NC/Br Shooter]

I shot over the radar today.. comparing two of loads. 30g of 135 verses 31.5g of 135.
Shot 15 shots per 30g, and 31.5
30g averges 3250fps
31.5 averaged 3440 fps

Do these speeds seem right?
This is a 6br Kreiger bbl shooting 68g Avengers
Im kinda wondering because I compared this to my Bartline and this Kreiger is faster. Both bbls are .236 bores 13.5tw