IMR 4166 in a 6 br

[Acsr]

Anyone using IMR4166 in a 6BR, Dasher, 6BRAI? If so what velocity are you getting with 103 to 105 class bullets? Lapua Brass and 7.5 to 8 twist Barrels?
Thanks

 

[Lance21]

I'm running it in 2 different 6 bra and a regular 6 br. 6 bra ,107 smk velocity around 2910. 6 br ,110 smk velocity @2768.

 

[Bc'z]

I'm running it in 2 different 6 bra and a regular 6 br. 6 bra ,107 smk velocity around 2910. 6 br ,110 smk velocity @2768. View attachment 1335771

Care to share some starting load info, and accuracy potential?
I'll be running Bart's 105 hammers

 

[Lance21]

I started at 28.5 going up 2 tenths @ a time. Accuracy is great.

 

[rwj]

I’m shooting 105 grain Berger Hybrids and VLDs using IMR 4166 at charge weights in the 28.4 to 28.6 grain range, velocities in the 2825 to 2850 FPS range. Accuracy seems to decrease at higher velocities/charge weights.

 

[Acsr]

Tested 28.8 gr. Of IMR4166 in my BR yesterday evening ,good accuracy,velocity was around 2801 avg with 10 shoots.

 

[NZ_Fclass]

Using 28.5g in Norma brass. Not much difference in accuracy to increase to 28.8, then pressure signs above 28.8. 2800fps.