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6.5 PRC 125 HHT 7 twist 20” barrel, CCI200, virgin ADG brass, COAL 2.850”, no crimp

N565:
57 gr - 2829
58 gr - 2844
59 gr - 2898 no pressure, out of room

Staball 6.5:
55 gr - 3061
56 gr - 3107
57 gr - 3165 no pressure. Still lots of case capacity left. 1.5MOA

4831SC:
55 gr - 2848
56 gr - 2906
57 gr - 2927. Almost out of case capacity. No pressure. Sub MOA
 
375 H&H
270 SH
Hornady virgin brass (Not sure which primer Hornady uses)
Varget
COAL 3.613"
1/4 crimp
25" barrel
No pressure signs with these loads
.9 MOA 4 shot group with 74.5 gr load


Work up with Varget; COAL 3.613"
71.02705 fps
72.02711 fps
73.02735 fps
74.02770 fps
74.52771 fps
74.52802 fps
74.52779 fps
 
199 Hammer Hunter
300 PRC
Christensen Arms MPR 26" 1:8 twist (suppressed) Magnetospeed
H4831sc Lapua fired >1x (not virgin brass)
CCI 250 COL 3.645" 1/4 turn crimp on Lee FCD
70 degrees F

72.0 - 2936
72.8 - 2942
73.2 - 2949
73.6 - 2955
74.0 - 2963
74.4 - 2968
74.8 - 2992, 2988
75.2 - 2986
75.6 - 3004
76.0 - 3012 (heavier bolt lift, stopped)
75.0 - 3003 (normal bolt lift)
75.5 - 3000, 2994 (normal bolt lift)

Edit: 3 shot ~1/2 MOA group at 300 with 75.2 grain load.
 
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6.5 PRC 125 HHT 7 twist 20” barrel, CCI200, virgin ADG brass, COAL 2.850”, no crimp

N565:
57 gr - 2829
58 gr - 2844
59 gr - 2898 no pressure, out of room

Staball 6.5:
55 gr - 3061
56 gr - 3107
57 gr - 3165 no pressure. Still lots of case capacity left. 1.5MOA

4831SC:
55 gr - 2848
56 gr - 2906
57 gr - 2927. Almost out of case capacity. No pressure. Sub MOA
Adding to the above -

Staball 6.5
57.5 - 3173
58.0 - 3183
58.5 - 3249. Sub 1" at 200 yds. Approaching pressure, but still some case room left

N560
57 - 2963
58 - err
59 - 3085
60 - 3139
61 - 3203. No pressure. Still a little room for more powder. 5" vertical string at 200y.

H4350
50 - 2819
51 - 2852
52 - 2916. No pressure, room for more. 3" horizontal string at 200y.
 
Adding to the above -

Staball 6.5
57.5 - 3173
58.0 - 3183
58.5 - 3249. Sub 1" at 200 yds. Approaching pressure, but still some case room left

N560
57 - 2963
58 - err
59 - 3085
60 - 3139
61 - 3203. No pressure. Still a little room for more powder. 5" vertical string at 200y.

H4350
50 - 2819
51 - 2852
52 - 2916. No pressure, room for more. 3" horizontal string at 200y.
I’ve gotten to 54gr of h4350 with no pressure yet and 3144fps. Going to try 54.5 and 55 then planning to post the data.
 
260 Rem
80HHT
20” 1:9”
Nosler new 1/8T crimp
Fed 210M
COAL: 2.652”

BL-C(2)
41.0: 3098
42.0: 3195
43.0: 3226
44.0: 3222
45.0: 3288
46.0: 3392
47.0: 3485
48.0: 3553

No signs of excess pressure

H4895
37.8: 3035
38.8: 3080
39.8: 3115
40.8: 3221
41.8: 3300
42.8: 3340
43.8: 3440 light ejector swipe
44.8: 3562 heavy ejector swipe and stiff bolt

6.5 Creedmoor
80HHT
26“ 1:7”
Lapua new 1/8T crimp
Fed 210M
COAL 2.517”

BL-C(2)
44.3: 3567
44.8: 3587
45.3: 3630
45.8: 3672
46.3: 3701

No signs of excess pressure.
 
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250 Savage Ackley Improved
95 gr. Hammer HHT
22” barrel (McGowen) 1:7" twist, M77 Hawkeye action
COAL 2.531”
Hornady .250 Savage case, once fired for forming, annealed
CCI #200 primers
1/4 turn crimp w/ Lee FCD
70 degrees ambient temp

43.5 and 44.0 of StaBall Match showed some ejector marks, slightly stiff bolt lift. No primer pressure signs.
43.1 and 43.3 showed very slight ejector marks, hard to see. No bolt lift resistance at all.

250 SAVAGE DATA.jpg
 
Adding to the above -

Staball 6.5
57.5 - 3173
58.0 - 3183
58.5 - 3249. Sub 1" at 200 yds. Approaching pressure, but still some case room left

N560
57 - 2963
58 - err
59 - 3085
60 - 3139
61 - 3203. No pressure. Still a little room for more powder. 5" vertical string at 200y.

H4350
50 - 2819
51 - 2852
52 - 2916. No pressure, room for more. 3" horizontal string at 200y.
Adding more:

N560
57 - 2963
58 - err
59 - 3085
60 - 3139
61 - 3203. No pressure. Still a little room for more powder. 5" vertical string at 200y.
61.5 - 3259
62 - 3256 sl ejt
62.5 - 3340 sl bolt, ejt
63 - 3369 hard bolt. Stop.

I think I'll explore around 61 gr for ~3200 fps. Not bad for a 20" barrel.

Ramshot magnum
62 - 2846
63 - 2881
64 - 2943. No pressure. Case almost full.

3 shot group of 57.5 gr Staball 6.5 was 1" at 200 yds. Velocity wasn't too consistent. This was the end of my shooting session, so chamber may have been getting warm: 3138, 3155, 3192.
 
300 WSM - Montana 1999 1-10 twist. 20” barrel. 4” suppressor.
124gr HH
Norma Brass 2xfired
COAL 3.278”
FED 215M primers
101 degrees outside in central TX! 1400ft elevation
Labradar
Need to use droptube and vibrate.

H4350
68.1 - 3319fps
69 - 3348fps compressed
70 - 3435fps compressed
70.5gr - 3485fps compressed, no pressure signs, more room to go but limited on powder space as it was way up in the neck
 
7x57
McGowen 24" 9 twist barrel on Tikka action w/ suppressor
120HH
Once fired R-P brass
Rem 9-1/2 primer
COL 2.967"
.004 NT, no crimp

Big Game
46.0 2838
47.0 2906
48.0 2924
49.0 3013
50.0 3010
51.0 3060
52.0 3115
53.0 3136 compressed load

W760
50.0 3131
51.0 Avg 3173, ES 11, SD 5.1 (this is load on which I settled)
52.0 3247
53.0 3267 approaching pressure
54.0 3275 bolt getting sticky

StaBall 6.5
50.0 3015
51.0 3044
52.0 3112
53.0 3158 compressed load

CFE223
48.0 3214
49.0 3286
50.0 3319
51.0 3347
52.0 3404 sticky bolt and swipe (while it was cool at the time, I won't be doing that again)

N540
43.0 3040
44.0 3075
45.0 3155
46.0 3222
47.0 3282
 
308 Win
Savage 20" takeoff, 10 twist on American Rifle Co Coup de Grace action, suppressed
154HHT
New Lapua brass
Rem 9-1/2M primer
COL 2.7915
.003-.0035 NT, no crimp

IMR 4895
42.0 2584
43.0 2697 compressed load, stopped here

IMR 8208XBR
42.0 2710
43.0 avg 2773, ES 25, SD 9.1
43.5 2794 slight pressure indicated via de-primed primer beginning to compress
44.0 2823 edge of compression. spent primer also showing pressure

Benchmark
40.0 2614
41.0 2713
42.0 2757
43.0 2782
43.5 avg 2829, ES 26, SD 10.1 (no signs of pressure, but had good velocity, so I stopped and loaded a few for hunting)
 
28 Nosler
Bergara 26" barrel 1-9" twist
145 HHT
New Nosler brass
CCI #250
3.342 COAL

Retumbo
85.5 3387
86 3453
86.5 3481
87 3500 averaged several .33"-.45" groups. =This is the load I plan to hunt with this fall
87.5 3508 no pressure signs
88 3511 No signs of pressure, but velocity started to plateau so I stopped here and backed down to 87gr

H-1000
83.5 3344
84 3497
84.5 3401
85 3423 Slight ejector mark, stopped here

Magnum
85.5 3344
86 3375
86.5 3398 Slight ejector mark, stopped here


For comparison I was shooting a 150gr Barnes TTSX with 82 gr H-1000 @ 3245fps
 
6.5 prc
Tikka 20", 8 twist, TBAC ultra 7
ADG brass
3/8 crimp
215m
H4831sc
125 HHT
2.860 oal
56.0 - 2962
56.5 - 2987
57.0 - 2982 (compressed)
57.5 - 3026 (compressed)
58.0 - 3059 (compressed) stiff bolt and ejector

124 HH
2.953 oal
55.0 - 2883
56.0 - 2981
57.0 - 3022
57.5 - 3087
Adding to this.

125 HHT
H4350
50.0 - 2885
51.0 - 2969
52.0 - 3027
53.0 - 3072
53.5 - 3095
54.0 - 3144
54.5 - 3149
55.0 - 3185 (ejector)
 
New to the group I have been testing hammer bullets for a little over a year. I think I have a pretty good load here for the .224 cal 44 gn hammer hunter. Gun is a 22 creedmoor lilja 24” 1-14 twist barrel gun works action. Peterson LRP brass CCI BR2 primer 40 grains of varget. C.O.A.L is 2.361 inches velocity is 4180 fps 6.8 inches of drop at 400 yards. Gun is zeroed at 200 yards perfect night set up with no range finder. I run a flir thermal optic in it so hard to tell distance. I always hold a little high on fur and down they go.
 
Remington 700 SA Remage Magpul stock
300WSM
26" 1:10tw Preferred Barrel
ADG brass 2X
FM210 primer - yes it is a 210
154HHT
CBTO - 2.249 ( crummy magazine max )
COAL - 2.843
0.010 setback
1/4 LFCrimp
VV - N550
Ladder only
65.0 - 3316
66.0 - 3375 ejector
67.0 - 3475 ejector slight bolt lift
68.0 - 3500 hard ejector, hard bolt lift

The COAL and CBTO measurements are unique to this rifle which can affect pressure. This load was deemed safe in my rifle, use standard safe reloading practices to work up a safe load in your rifle.
 
Remington 700 SA Remage Magpul stock
300WSM
26" 1:10tw Preferred Barrel
ADG brass 2X
FM210 primer - yes it is a 210
154HHT
CBTO - 2.249 ( crummy magazine max )
COAL - 2.843
0.010 setback
1/4 LFCrimp
Ramshot Big Game
Ladder only
66.0 - 3276
67.0 - 3308
68.0 - 3308
69.0 - 3341 ejector
70.0 - no reading
71.0 - 3410 ejector hard bolt

The COAL and CBTO measurements are unique to this rifle which can affect pressure. This load was deemed safe in my rifle, use standard safe reloading practices to work up a safe load in your rifle.
 
Remington 700 Sendero
300WM
26" 1:10tw
Peterson Long brass 2X
FM215 primer
154HHT
CBTO - 2.935
COAL - 3.531
0.321 jump - Yep this is correct
1/4 LFCrimp
Hodgdon H4350
74.0 - 3358
75.0 - 3401
76.0 - 3445
77.0 - 3490
78.0 - 3555
79.0 - 3555
80.0 - 3613
81.0 - 3663 ejector slight
This may have been posted before. Could not find it.

The COAL and CBTO measurements are unique to this rifle which can affect pressure. This load was deemed safe in my rifle, use standard safe reloading practices to work up a safe load in your rifle.
 
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