181 Hammer Hunter in 300 WM ?

[Muddyboots]

I prefer the 196HH for the 300WM, which is one heck of a thumper at 3144 fps! It will definitely leave a mark!

 

[twister]

Where did you start and stop with 7828?

loading 77.7 stopped just over 80. I should check the speed again since the barrel was very new for this load work up.

 

[Sending156s]

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.

I just bought my 1st Hammer bullets. They are for a .243 & arrived via postal mail yesterday. I haven't shot any yet, but they are the most uniform bullets to the eye I have seen. I'm going to weight check & measure base to ogive asap. If I can find them I'll order the 196s for my 300WM & see how they shoot. Mine doesn't like the light bullets, but will make just 1 ragged hole with 190 & 200 gr MKs at 300 yds.