Hammer Hunter Load Data, (See page 1, Post 8)

[ButterBean]

I picked up some Peterson brass for my new 6.5 RPM and some 99 & 124 Hammer Hunters. I decided to load up some 99's first. Didn't have much time so only tried a couple charges and powders. These are the first firings, barrel not broken in. Weatherby Backcountry 24".

Started with H1000 and Fed 215's
70gr = 3374
71gr = 3436

Then tried 7828SSC and 215's
68gr = 3583
69gr = 3642
70gr = 3731
71gr = 3726

No bolt lift or smears on any. Just some fine ejector marks on all. Thinking that's just an edge/burr around hole.

Will pick up where I left off and go until I reach pressure. I could also seat out a little further. I seated to 3.272" at first band.

I have some H4831SC, H4350, and H100V I was thinking about trying for faster powders.

Freaking Awesome

 

[Muddyboots]

300WSM 166 HH
I am redoing couple loads due to switch to ADG brass.
NOTE ALL LOADS WITH FM210 PRIMER.
Cloudy 45 degrees for all loads
700 SA 300WSM
Preferred Barrell SS
26" full Sendero 1:10tw
Barrel is short throated due to 700 short magazine. Max COAL is 2.900.
ADG brass 2X
FM210 LR primer
CBTO - 2.214
COAL - 2.900
Crimp 1/8
166HH-PDR shank swirled in graphite for seating
Hodgdon Hybrid H100V
64.0-3037
65.0-3072
66.0-3129
67.0-3182
68.0-3220-very slight ejector - bolt easy lift
69.0-3244-slightly more ejector - stopped
=================================

ADG brass 2X
FM210 LR primer
CBTO - 2.214
COAL - 2.900
Crimp 1/8
166HH-PDR shank swirled in graphite for seating
Alliant powder - PP4000R
67.0-3065
68.0-3122
69.0-3159
70.0-3197
71.0-3244-slight ejector-stopped

=================================

These loads were deemed safe in my rifle. Work up any load using safe standard reloading practices.

Both powders look promising for reasonable velocity with "other" powders for the 166.

 

[Havoc]

Tikka T3X, 24" Factory barrel Manners stock.
peterson brass
Fed 215 primer
124 hammer hunter
N560
Dead Air Nomad
Kahles 5x25i


shot the first group, at 58 grains no pressure issues brass looked good. Second group I shot at 59 grains, pressure sign and heavy bolt lift. The Labradar didn't pick up the first group even with the trigger. 59 grain was hitting 3243 fps so I didn't bother shooting the 60 grain load.

First two shots at 58 grains.

59 grain brass.

 

[dougduey]

Tikka T3X, 24" Factory barrel Manners stock.
peterson brass
Fed 215 primer
124 hammer hunter
N560
Dead Air Nomad
Kahles 5x25i


shot the first group, at 58 grains no pressure issues brass looked good. Second group I shot at 59 grains, pressure sign and heavy bolt lift. The Labradar didn't pick up the first group even with the trigger. 59 grain was hitting 3243 fps so I didn't bother shooting the 60 grain load.View attachment 454614View attachment 454615
First two shots at 58 grains.View attachment 45461659 grain brass.

That's fantastic

Just FYI, Steve Davis found that a non magnum primer worked better in the PRC.

 

[Havoc]

That's fantastic

Just FYI, Steve Davis found that a non magnum primer worked better in the PRC.

Thanks for that info.

 

[GLTaylor]

Havoc,
Need twist and OAL if you would measure it?

 

[Havoc]

Havoc,
Need twist and OAL if you would measure it?

1/8 twist
2.93 coal
.118 off the lands

Here is my previous speed with N565 and target, I personally thought it was quite mild for a 124 grain bullet, my factory Hornady Match was 2960 with a 147 ELDM. All my load development has been done by Unknown Munitions.

On a side note, I can not get the bullets to feed out of a mag, the bolt skims right over the top. I've tried Hawkins and MDT mags.

 

[haisardao]

Terminus Apollo TI SA, 20 inch Benchmark barrel, 1:8. 7 Sherman Short Magnum
Brass: ADG new
Powder: H4350
Bullet: 143 HH
Primer: Fed215 match
COAL: 2.920
Ran a ladder from 57.0-60.8, hit pressure at 60.0 with a light ejector mark, and a clear one at 60.3. Very tight group at the target.
Velocity from 2967-3169.
Working around 58 gr this week. Hoping it shoots as usually Hammers do.

 

[GLTaylor]

Terminus Apollo TI SA, 20 inch Benchmark barrel, 1:8. 7 Sherman Short Magnum
Brass: ADG new
Powder: H4350
Bullet: 143 HH
Primer: Fed215 match
COAL: 2.920
Ran a ladder from 57.0-60.8, hit pressure at 60.0 with a light ejector mark, and a clear one at 60.3. Very tight group at the target.
Velocity from 2967-3169.
Working around 58 gr this week. Hoping it shoots as usually Hammers do.

Do you have velocities for shots between 57 and 60.8?

 

[haisardao]

Do you have velocities for shots between 57 and 60.8?

Attached.

 

[just_jon]

280AI
143 HH
26" Browning X-Bolt 1:8"
Peterson 2X
Fed 215M
3.43"

Reloder 23
59.0 3085
59.5 3127
60.0 3160
60.5 3171
61.0 3190

IMR 4831
58.0 3117
58.5 3132
59.0 3160
59.5 3204
60.0 3219

 

[just_jon]

280AI
143 HH
26" 1:8
Peterson New 1/8T FCD
Fed 215M
COAL 3.43"
H4350
55.5: 3075 ES 17 SD 12 Group 1.18"@100 yards
56.0: 3107 ES 18 SD 9 Group .65"
56.5: 3138 ES 25 SD 13 Group 1.07"
57.0: 3189 ES 18 SD 9 Group 1.02"
57.5: 3214 ES 9 SD 4 Group .89"
No signs of excessive pressure.

 

[dougduey]

280AI
143 HH
26" 1:8
Peterson New
Fed 215M
COAL 3.43"
H4350
55.5: 3075 ES 17 SD 12 Group 1.18"@100 yards
56.0: 3107 ES 18 SD 9 Group .65"
56.5: 3138 ES 25 SD 13 Group 1.07"
57.0: 3189 ES 18 SD 9 Group 1.02"
57.5: 3214 ES 9 SD 4 Group .89"
No signs of excessive pressure.

Nice!!! I'm going to bet you're getting close to pressure. I want to say, from off the top of my head, my load using RL23 ended up around 3240 fps

 

[just_jon]

Nice!!! I'm going to bet you're getting close to pressure. I want to say, from off the top of my head, my load using RL23 ended up around 3240 fps

I think you are correct. I have no plans on testing H4350 further. I was looking to try your RL23 load, but didn't feel comfortable going above 61 grains given my Peterson brass case capacity is only 69 grains. QL and GRT use a preset of 74.0 grains of water. That said, I got 3190 fps with 61 grains. After a few firings, I think I'll be able to test higher.