IMR-4451 in a Dasher

[Mulligan]

Yesterday I tried some 4451 in my dasher behind a 107 SMK, plesently surprised.
I have more work to do with development however 35.5 grains looked good on paper (2.915" @ 600), not much vertical. Not too bad for a windy day.
Anyone have experience with this powder in their dasher?
CW

 

[Eric Leonard]

I tried it in my BR-DX and accuracy was about the same but I couldnt get enough in the case to equal velocity of H4350,,it shot just as good though and if I couldnt get 4350 I would use it,,

 

[Kebee]

Yesterday I tried some 4451 in my dasher behind a 107 SMK, plesently surprised.
I have more work to do with development however 35.5 grains looked good on paper (2.915" @ 600), not much vertical. Not too bad for a windy day.
Anyone have experience with this powder in their dasher?
CW

I tried 35.6 good group at 100. Then a week later a lot of vertical. Hornaday 105 amax. Chronograph showed 2880 fps with an Es of 43 in a 30 inch shilen barrel. I'm trying 36.6 this weekend. I got an Es of 17 and 3000 fps. I'm trying to adjust seating depth to see if it will group.

 

[Kebee]

I tried 35.6 good group at 100. Then a week later a lot of vertical. Hornaday 105 amax. Chronograph showed 2880 fps with an Es of 43 in a 30 inch shilen barrel. I'm trying 36.6 this weekend. I got an Es of 17 and 3000 fps. I'm trying to adjust seating depth to see if it will group.

Wouldn't group. Back to the loading bench