Imr 4166 for 308

[Jaybo]

A friend of mine suggest that i try some imr 4166 for my 308. Was just wondering if anyone out there has any experience with this powder in a 308 or some load data for the 4166. I'm going to be shooting 168 Amax and 168 Berger vld. Thanks guys

 

[Pappy42]

What I did was look on hogdon website for .308 Varget loads with the bullets I wanted to shoot. The 4166 is a little faster than the Varget for me.

I think that 4064 or 4895 starting loads would be a safe place to start

 

[Jaybo]

What I did was look on hogdon website for .308 Varget loads with the bullets I wanted to shoot. The 4166 is a little faster than the Varget for me.

I think that 4064 or 4895 starting loads would be a safe place to start

Did you see any noticeable advantages by changing to the 4166 over the other powders. In accuracy and velocities and sd

 

[clowdis]

I'm using it in .308 with 155gr. bullets. It shoots just as well as Varget but the accuracy band was very narrow for me. A half grain either way and it didn't shoot well. I'd like to know if this is typical.

 

[Pappy42]

Did you see any noticeable advantages by changing to the 4166 over the other powders. In accuracy and velocities and sd

Noticeable advantages: Available when I needed it, accuracy the same as previously worked up loads (out to 600 yards, which is the longest distance I shoot), and it is advertised to be insensitive to temp changes.

 

[mac86951]

I'm using it in .308 with 155gr. bullets. It shoots just as well as Varget but the accuracy band was very narrow for me. A half grain either way and it didn't shoot well. I'd like to know if this is typical.

Can be due to chamber/bullet config.
Ive used it as a replacement to varget I'm 223 and it can be sufficient so its worth a try in 308. Typically I use 4064 or 4895 in 308 however, so I don't have a comparison other than please post your finding I'd like to know.

 

[bulwaagh]

I'm using it in .308 with 155gr. bullets. It shoots just as well as Varget but the accuracy band was very narrow for me. A half grain either way and it didn't shoot well. I'd like to know if this is typical.

That pretty much sums up my experience with it. I was trying 1, then 1/2 grain differences and just when I thought I was on to something, it either wouldn't get tight, or went loose really quick. I tried it out for several of my bullet types (308 as well) and I just couldn't get it to run right. It was "OK" for me, but nothing to make go out and get another jug. Hey, some guys don't shoot Varget for the same reasons....

 

[DanTana]

I could not get 4166 to group for me. I have about ended up with 4320.

 

[kevwil]

I've tried it. I like the powder overall, and I really hoped it would work with the Berger 185 Juggernaut. My 22" barrel couldn't find a charge weight it liked; the OCW low node was too slow and the high node was showing slight pressure signs in winter weather. It might be just the ticket with a different bullet, or a different barrel.

 

[hogan]

Want to get match quality groups?

Own a Sierra manual? Every bullet they make has an "Accuracy Load" listed.
Be a sport, spring for some Sierra Matchkings and use their Accuracy Data and go to town...

Pretty hard not to get good results using their recommended data.
Iron out your rifle's potential, then go exploring. So many new powders. Hard to go wrong
with Varget, IMR 4064, IMR 4895, or Reloader 15.

!Be a sport, live a little... Buy a loading manual and learn something new everytime you open it up!

 

[MyassisDragon]

Dan Tana, is that fierce attack beast sitting in front of your rifle trained to fend off all who would get too near it?? Very good looking dog AND rifle.

 

[dogdude]

Not to popular but try Win. 748, meters like a dream. I load for 155's at 46ish

 

[madderg]

If you can, try Norma 203B...great stuff

 

[whatwind?]

i tried IMR 4166 today in my FTR rifle, 31" bbl, .199 fb, lapua sr primer, once fired brass, 200 gr hybrid, .010 off

42.0 gr = 2621 fps
42.5 gr = 2666 fps (best accuracy)
43.0 = 2683 fps
43.5 = 2705 fps (some press signs)
44.0 = 2727 fps (whole lot of press signs)

43.54 gr varget = 2645 fps (my comp load)

70 F, 60 Hum, +500 DA in Louisiana today

the 42.5 load was great, rest sucked

 

[swadiver]

a moderate load, between 41.0 and 42.0 grs worked good for me with 175 gr SMK's