White Oak 06

Hey guys it's been a while since my last post.

I finally shot my hand loads and it worked out nicely .
I would like to know if any of you use Imr 4350 and cci 200 primers when hunting at temps in the teens ?
Thanks .

super_hunt54

4350 is pretty temp sensitive. If you sited in during warmer weather I would suggest you resight it. Most all IMR powders that are good for the .30/06 are fairly temp sensitive. I've found that Varget (Hodgdon) is about the best non temp sensitive powder on the market for 06 loads. H4350 is also right up there with it. When I can't find Varget (you would be surprised how often that is) I usually can find H4350.

White Oak 06

Thank you SH54, it was 70* when I tested for the first time.

So the ignition with cci 200 shouldn't be a problem just as long as I confirm my zero at near temps ?

Thanks, 06

Big Uncle

Your load should work very well. I have used a similar combination as my primary load for a 30-06 for many years, sometimes in temperatures much colder than the teens. You have hit upon a very good combination.

White Oak 06

Thanks Big Uncle !

super_hunt54

Yes you should be okay with the primers, but that powder will be a little slower out of the muzzle at 10 degrees than it was at 70 degrees so your POI at 200 yards will definitely be lower. How much lower varies with other considerations such as altitude and humidity. I take one or 2 of my 06's up to Alaska often and as you know it's not the warmest place on Earth. Always site in when I get there.

White Oak 06

Thanks SH 54 !

bronko22000

I've used IMR4350 for years in my 270 with great success in all seasons. In my '06 I use IMR4064.
Your combination should work nicely in your rifle.
Super - I always wondered about the temp sensitivity of my load. As stated above I used to shoot 54 grains of IMR4350 over a Nosler 130 Ballistic Tip out of my .270 Win. I never had any problems with this load hunting all over the country in all kinds of weather. I guess maybe I didn't notice or was really lucky. But I can't recall ever dropping the hammer on that rifle I without having to fill out a tag. And a few of those shots were over 300 yds and one over 400.

super_hunt54

I switched to the Varget from IMR4350 in the 06's a good while back. My POI from a 24 inch barrel was noticeably lower at 200 at lower temps. Others results may vary. Noticeably lower was 2.5 inches. That may not be someone else's results or some may not consider that a good enough amount to be worrisome. It was to me. But I am a stickler for precision.

Big Uncle

As to the temperature sensitivity of IMR 4350 - I chronograph my loads in different temperatures and only see about a difference of less than 100 fps in my 30-06 loads from 80 degree sessions and 0 degree sessions. That will probably be an adjustment of a maybe couple of tenths of an inch at 100 yards and somewhere around an inch at 300 yards. For most hunting purposes I do not think it is significant.

Of course every rifle is a law unto itself and the rifle may shoot to a slightly different point of impact at different temperatures and humidity for reasons such as bedding. It is good practice to simply shoot the rifle/ammo combination under different conditions.

I developed loads during the heat of the summer at nearly sea level at high humidity and shot them at a range at 20 degrees at 9,000+ feet of elevation with well bedded synthetic stocks and often had 3" adjustments at the 300 yard targets. That is still "minute of elk" but is definitely a measurable difference.