181 Hammer Hunter in 300 WM ?

[Aviator]

What's your load? I have Peterson brass H1000,RL23,imr7977, imr7828, Ramshot Magnum.

 

[Doc88]

RL 23 would be best option. I use RL22 as that is all I had at the time. 75gr @ 0.065 off lands. 3297fps. Be sure you are using a 9 twist or faster barrel for better stability. Hammer Time Forum may have some starting loads for RL23 and the 181HH.

 

[Varmint Hunter]

The original 181 HH bullets shoot very well from my 30Nosler with a 10" twist. However, to improve stability, I believe Hammer came out with a new 180gr that is designed around the common 10" twist 30cal barrels.

 

[Muddyboots]

You might want to call Steve Davis at Hammer to see if the 180's are much better option. They have worked with a ton of folks exchanging bullets to insure you are good to go!

 

[Aviator]

Steve said I'm good to go with a 9twist muller.

 

[Muddyboots]

Yep!

 

[Shane Lindsey]

73.5gr Rl 23
Norma case
CCI250
3.62" COAL

77gr H1000
Norma case
CC250
3.575"
2990 FPS

As these are so long, I prefer the 152 gr Hammer Hunter better.

 

[twister]

7828 for me, speed is 3150

 

[Aviator]

7828 for me, speed is 3150

Where did you start and stop with 7828?

 

[twister]

id have to look at the charge weight. I do remember that wasn't top speed just a good accuracy spot.

 

[reelhardmt]

I have a awesome load with rl-26 crazy fast!!!!

 

[Aviator]

I have a awesome load with rl-26 crazy fast!!!!

Tell us about it

 

[reelhardmt]

27" 3 grove lilja 1:10 twist 78 grains rl-26 at 3.650. Thought I had the speed written down but I don't. I do remember it being crazy fast and very flat to 915 yards.

 

[Muddyboots]

I agree with reelhardmt, here is some data from my Sendero with 181HH and 196HH last fall:
Sendero G1 Version
26" 1:10 twist
Both bullets seated to 3.62" max COAL standard Remington hinged magazine
The 181HH and the 196HH jump was pretty close to each other at about 0.095. This is on barrel with about 1,000 rounds.

RP brass - 0.002 shoulder bump ( I need to redo since I have switched over to Peterson brass.)
70 degrees (September 2020 data)
Optical Light screen with sun shades measured 25' from muzzle
Loads in bold are the ones I ended up with and both shoot 1/2 MOA out to 200. I have not had any time to stretch them out but do not see any concerns they won't shoot well at distance. They did hold 1/2 MOA at 300 as well.

Please respect safe loading practices and work up your loads accordingly in your own rifle. Each rifle will be different EVEN if same make and model.

181HH – RL-26 Velocity 196HH – RL-26 Velocity
75.0 3030 73.5 2982
75.5 3044 74.5 3016
76.0 3058 75.0 3023
76.5 3079 76.0 3051
77.0 3100 77.0 3093
77.5 3118 78.0 3144
78.0 3129 79.0 3189
78.5 3152 79.5 3189
79.0 3182 80.0 3205 EJ-MRK
79.5 3182 80.5 3220 – lgt bolt
79.8 3212
80.1 3228
80.4 3244
80.7 3252
81.0 3276
81.3 3292
81.6 3292
81.9 3292
82.3 3325 light EJ-MRK
82.6 3333 lgt bolt lift and light ejector mark - not unusual for R-P brass.

The bold loads are where I ended up for accuracy.