IMR 4166,4451 & 7977

[Bbear]

I'm running 7977 in both of my 25-06's pushing the 110 gr AB out of near-worn out factory 22" barrels. Speed is good - 3200 fps in one and 3150 in the other (.5 gr difference in loads). Accuracy has been very good and I don't notice a lot of change due to temps (40-105f). Main thing I've seen is that the barrels do tend to heat up a bit faster and groups change POI by about .5-.75".

 

[Alaska]

I'm running 7977 in both of my 25-06's pushing the 110 gr AB out of near-worn out factory 22" barrels. Speed is good - 3200 fps in one and 3150 in the other (.5 gr difference in loads). Accuracy has been very good and I don't notice a lot of change due to temps (40-105f). Main thing I've seen is that the barrels do tend to heat up a bit faster and groups change POI by about .5-.75".

Interesting on barrel heat up

 

[otter25]

Whats the plan for 4166?

35 whelen, 358 Win, 35 Rem, 270Win, 223 Rem, 221Rem, 22 Hornet. Four of these could use the same powder and I always looking for that over achever for the 358win. TAC & IMR8208 are two I have looked at.

TAC with a Fed mag primer is about as good as it gets for a 358

 

[Alaska]

Always used 4320 in the 358