Need H4350 Load for 165/168 gr in M70 Win .30-06

[Idano]

Okay, I am short on time to properly develop a new load for my Winchester M70, post 64 but pre 70. I would like to get some load recommendations using H4350 with either a 165 or 168 grain bullet for a 1-10 twist rate so I can narrow down my ladder. I am thinking starting out at 57.5 gr of H4350, but I would like to know how that relates to what others are experiencing as their best load. I apprecate your help, thank you.

Idano

 

[Bart B.]

48 to 49 grains of IMR4064 was the favorite powder charge for competitors using the .30-06 and those bullet weights. IMR/H4350's a bit too slow for best accuracy/velocity combination, but it's ideal for 200 grain bullets.

55 to 56 grains of H4350 may be best if that's the powder you have now. You'll need to shoot at least 15 shots per group to be sure.

 

[loadedround]

Idano:
My current Speer #14 Manual shows the same loads for either the 165 or 168 gr bullets in the 30-06 using H4350 powder:

Starting load: 54.0 gr Maximum load: 58.0gr

Hope this helps you.

 

[Slamfire]

Here is two data points with H4350



M70 26" 1:10 Douglas Barrel

168 gr Sierra MK 2nds 55.0 H4350 RA54 Fed210M
27 July 97 T = 88F
Ave Vel = 2670
Std Dev = 33
ES = 78
Low = 2635
High = 2713
N= 7





M98 30-06 26” Wilson Match Barrel 1:10


175gr Sierra Match King 56.0 grs H4350 wtd. WLR Commercial cases OAL 3.290"
5 Oct 2000 T=70°F

Ave Vel = 2733
Std Dev = 24
ES = 80
Low = 2686
High = 2766
N = 14

 

[Idano]

Thanks everyone for the info.

 

[ArchAngelCD]

I shoot Sierra 165gr GameKing and Sierra 168gr MatchKing bullets and I charge 58.0gr H4350. Both are very accurate loads and I use nothing else in my 30-06 bolt action rifle now days.

I'm currently using a CCI standard LR primer but I use the same charge with Winchester LR primers too. I'm currently using Federal and Winchester brass.

 

[GooseGestapo]

I like 58.0gr of H4350 under either the Sierra or Nosler 165's.
Newer data with newer lot#'s show 59.0gr as max.

I'm getting 2,850-2,870fps from my 24" bbl.

More accurate in my rifles, is 57.0gr of IMR4350 for slightly lower velocity.
Also, with the Federal 210M, I get slightly tighter groups.

 

[Ben Shepherd]

More accurate in my rifles, is 57.0gr of IMR4350 for slightly lower velocity

That's the BINGO! load in my Rem 700 as well......

 

[ArchAngelCD]

In that case I guess I should give the 57.0gr load another go around. It's been a while since I did any testing with H4350 and those bullets. If I remember correctly though, the 26" barrel on my M1917 Enfield decided 58.0gr was more accurate. That's a great rifle I bought for only $140 a while back. Someone had already did all the work on it to make is a good hunting rifle. I don't want to shoot anything else. I added a 3-9X40 Banner Dusk & Dawn scope and that's all I needed to do to it.

 

[Ky Larry]

My CZ-550 in .30-06 likes:

165gr Hornady SST
55.5gr IMR-4350
Win LR Primer
R-P case
C.O.L. 3.33

This load shoots .5 M.O.A. However this is where I ran out of bullets in my testing so hotter loads may be more accurate. I started at 52gr of Imr-4350 and worked up in .5gr increments. 52.0gr gave 1.5" groups and as I went up, the groups tightened up. Sorry for the incomplete data.

 

[Idano]

Thank you everyone for the information. Looks like i am going to build about 40 rounds up today between 56.5 and 58 grs of H4350 and see what happens.

Thanks - Idano

UPDATE:

I got back from the range, unfortunately it was windy, but was able to get some good data. It looks like my best load will be around 57.5 grains of H4350. Here was my best string;

M70 26" 1:10
165 gr Hornady SST 165 gr. BT Ballistic Tip
R-P Cases
47.5 gr H4350
CCI -
Ave Vel = 2825
Std Dev = 20.62280291
ES = 54
Low = 2786
High = 2840
N= 5
MOA 1.4

I'll load up some more and see how they do on a calm day. I may have have to bump it up or down a tenth or two to bring down the MOA. However, half grain either way tanked quickly son I know I am close. Again many thanks to everyone who saved me time by giving me their best loads- Thank you.