IMR 4166 22/250

[Ironworker]

Anyone have any experience with IMR 4166 in their 22/250s

 

[Bigguy1951]

Anyone have any experience with IMR 4166 in their 22/250s

I am very happy with how it works with 50, 55 and 69 gr bullets. It seems a little dirty but it is temp stable. Have only shot one load over a chronograph, the 69 gr Sierra MK, and the 10 shot average was 3275 with and ES of 18. Not single digit but I can live with it. Not shooting near max loads.

 

[forgivenall]

I have a 22.250ai 6.5 twist and a long freebore to hopefully launch 95SMKs around 3100. I heard from a friend that he uses h1000. Looking to see if anyone has any load data for IMR 4166.

 

[MikeT49]

35.7 grains, BR2s, WW brass, 55 SBK. 26" 9T. ~3620 fps, 1/2" groups or smaller @ 100.

 

[358WCF]

I have a 22.250ai 6.5 twist and a long freebore to hopefully launch 95SMKs around 3100. I heard from a friend that he uses h1000. Looking to see if anyone has any load data for IMR 4166.

Thinking 4166 wont be your best choice. In my 22-250 Imp., H4350 is about perfect with 53s. IMRs 7977 & 8133 might be the Enduron powders you're looking for with 95s if H1000 is appropriate.

 

[L1986]

I have a 22.250ai 6.5 twist and a long freebore to hopefully launch 95SMKs around 3100. I heard from a friend that he uses h1000. Looking to see if anyone has any load data for IMR 4166.

4166 would be a little fast burning for the 95s I would say. I used it with good success in my 22250AI with 55g noslers but H1000 was much better for 75g and above