Re: RRAs 9" twist doesn't shoot 65gr GK well?
Iron Worker
My groups ran on average 1” or less depending on the weapon and the optics I had on it at the time.
The AR15 A2 clone with a 20” 19 twist hovered around 1.0” for 3 shot group, using my ACOG .35x35
My Colt M4 clone with a 16.5” 17 twist holds a nice sub moa around 0.75” on it I have a Leupold Prismatic.
The third rifle I used 65gr Sierra's in was my custom .223 Rem M700 LR with a 30” 18 twist Polygonal. I have a Leupold Mk4 M1 16X {This rifle was rechambered from .223 Rem to .222 Mag; just for fun, it shot fine as a .223 Rem, but I wanted to see if I could pick up a little more vel’s while using 80gr Mk’s for 1k matches.} When it was a .223 Rem I used the 65gr. Gk’s in it with the same H335 load and turned in many sub 0.50” five shot groups.
Here’s a scale burn rate; that might help you with M193 Federal and Military powders
POWDER BURNING RATE CHART
(INCLUDES CURRENT AND OBSOLETE POWDERS)
1 R1, Norma
2 N100, Accurate
3 N310, Vihtavuori
4 Bullseye, Alliant
5 BA 10, Vectan
6 WST, Winchester
7 P805, RWS
8 N312, Vihtavuori
9 W230, Winchester
10 Solo 1000, Accurate
11 Clays, Hodgdon
12 Red Dot, Alliant
13 N318, Vihtavuori
14 P 801, RWS
15 HiSkor 700X, IMR
16 AS, Vectan
17 N320, Vihtavuori
18 TR 100, Hodgdon
19 Green Dot, Alliant
20 International, Hodgdon
21 No. 2, Accurate
22 N321, Vihtavuori
23 AS25, Vectan
24 N324, Vihtavuori
25 HP38, Hodgdon
26 w230P, Winchester
27 W231, Winchester
28 N325, Vihtavuori
29 W452, Winchester
30 N330, Vihtavuori
31 HS5, Hodgdon
32 PB, IMR
33 N331, Vihtavuori
34 No. 5, Accurate
35 BA 9, Vectan
36 Unique, Alliant
37 P 803, RWS
38 A1, Vectan
39 W473, Winchester
40 P 804, RWS
41 SR4756, IMR
42 WSL, Winchester
43 Power Pistol, Alliant
44 Universal, Hodgdon
45 SR7625, IMR
46 W473AA, Winchester
47 A0, Vectan
48 Herco, Alliant
49 SP 8, Vectan
50 N340, Vihtavuori
51 WSF, Winchester
52 AL5, Alcan
53 W500HS, Winchester
54 HS5, Hodgdon
55 AL7, Alcan
56 W540MS, Winchester
57 HS6, Hodgdon
58 W540, Winchester
59 3N37, Vihtavuori
60 WAP, Winchester
61 AL8, Alcan
62 HiSkor 800X, IMR
63 N350, Vihtavuori
64 HS7, Hodgdon
65 R23, Norma
66 N1020, Norma
67 H240, Hodgdon
68 W571, Winchester
69 SP 2, Vectan
70 W630, Winchester
71 W630P, Winchester
72 N105SM, Vihtavuori
73 No. 7, Accurate
74 Blue Dot, Alliant
75 No. 9, Accurate
76 BA 6, Vectan
77 P 806, RWS
78 2400, Alliant
79 N110, Vihtavuori
80 R123, Norma
81 30 Carb, RWS
82 SP 3, Vectan
83 H110, Hodgdon
84 W296, Winchester
85 W295HP, Winchester
86 SR4759, IMR
87 N120, Vihtavuori
88 XMP5744, Accurate
89 IMR4227, IMR
90 N125, Vihtavuori
91 H4227, Hodgdon
92 N130, Vihtavuori
93 TU 2000, Vectan
94 1680, Accurate
95 W680, Winchester
96 R 901, RWS
97 N132, Vihtavuori
98 Hornet, Nobel
99 N200, Norma
100 N133, Vihtavuori
101 Brigadier 4197 Scot
102 IMR4198, IMR
103 H4198, Hodgdon
104 XMR2015, Accurate
105 2015BR Accurate
106 Reloder 7, Alliant
107 HiVel 2, Hercules
108 N134, Vihtavuori
109 R 902, RWS
110 IMR3031, IMR
111 Benchmark 1, Hodgdon
112 N201, Norma
113 H322, Hodgdon
114 IMR 8208
115 Benchmark 2, Hodgdon
116 TU 3000, Vectan
117 2230, Accurate
118 Brigadier 3032 Scot
119 IMR4895
120 H4895, Hodgdon
121 SP 10, Vectan
122 H335, Hodgdon
123 R 903, RWS
124 WC 844
125 BLC(2), Hodgdon
126 WC 846
127 SP 9, Vectan
128 2460, Accurate
129 SP 7, Vectan
130 W748, Winchester
131 W748BR, Winchester
132 Reloder 11, Hercules
133 Reloder 12, Alliant
134 N135, Vihtavuori
135 IMR4064, IMR
136 Brigadier 4065 Scot
137 Varget, Hodgdon
138 2520, Accurate
139 N202, Norma
140 XMR4064, Accurate
141 TU 5000, Vectan
142 R 907, RWS
143 N203, Norma
144 Neonite 12 Nobel
145 IMR4320, IMR
146 H375, Hodgdon
147 N540, Vihtavuori
148 N140, Vihtavuori
149 2700, Accurate
150 Reloder 15, Alliant
151 Reloder 21, Hercules
152 H380, Hodgdon
153 N550, Vihtavuori
154 N150, Vihtavuori
155 WC 852 (fast) WC852 and WC852f are different burn rates. WC852f uses H380 data.
156 R 904, RWS
157 W760, Winchester
158 W760BR, Winchester
159 H414, Hodgdon
160 H205, Hodgdon
161 N160, Vihtavuori
162 N560, Vihtavuori
163 4350, Accurate
164 IMR4350, IMR
165 H4350, Hodgdon
166 TU 7000, Vectan
167 N204, Norma
168 W780BR, Winchester
169 Brigadier 4351 Scot
170 Reloder 19, Alliant
171 IMR4831, IMR
172 N205, Norma
173 WC 852 (slow) WC852 and WC852f are different burn rates. WC852 uses IMR 4831 data.
174 XMR3100, Accurate
175 H450, Hodgdon
176 H4831, Hodgdon
177 SP 12, Vectan
178 W785, Winchester
179 MRP, Norma
180 N165, Vihtavuori
181 R 905, RWS
182 H831, Hodgdon
183 TU 8000, Vectan
184 Reloder 22, Alliant
185 H570, Hodgdon
186 IMR7828, IMR
187 8700 Accurate
188 WC 860
189 24N41, Vihtavuori
190 H1000, Hodgdon
191 H870, Hodgdon
192 H5010, Hodgdon
193 SP 13, Vectan
Powder/Manufacturer Sierra’s Designation Also Known As, or may
Factory Designation 5th Edition Manual be listed elsewhere as:
Norma R1 Norma R1 R1
Vihtavuori N310 Viht N310
Hodgdon Titewad Titewad
Accurate Arms Nitro 100 AAN100 N100
Hercules/Alliant Bullseye Bullseye B’eye
Accurate Arms Solo 1000 Solo 1000
Hodgdon Titegroup Titegroup
Accurate Arms No. 2 AANo.2 No.2, #2, AA #2
Alliant American Select Am. Select
Hercules/Alliant Red Dot Red Dot RDOT
Hodgdon Clays Clays
Vihtavuori N320 Viht N320 N320
Winchester Super Target WST Win WST
Ramshot Competition Competition
Hodgdon HP38 HP38 HP38
Winchester 231 231 WW 231, WW 231, Win 231
Ramshot Zip Zip
IMR HiSkor@ 700X 700X 700X
Hercules/Alliant Green Dot Green Dot GDOT
Hodgdon International Clays Int’l Clays International
Vihtavuori N330 Viht N330 N330
IMR PB PB
Accurate Arms No. 5 AANo.5 No. 5, #5, AA #5
Winchester Super Lite WSL WSL1, WSL8, Win WSL
Hercules/Alliant Unique Unique UNIQ
Hodgdon Universal Clays Univ. Clays H. Universal
(Universal Clays should not be confused with Hodgdon’s Clays, or International Clays. These three powders are different and should not be interchanged.)
Alliant Power Pistol Power Pistol
IMR SR 7625 SR 7625
Hodgdon HS6 HS6 HS6
Ramshot Silhouette Silhouette
Winchester Action Pistol WAP Win WAP
Vihtavuori N340 Viht N340 N340
Winchester 540 540 WW 540, WW 540
Hercules/Alliant Herco Herco
Winchester Super Field WSF Win WSF
IMR SR 4756 SR 4756
Vihtavuori 3N37 Viht 3N37 3N37
IMR AHiSkor@ 800X 800X 800X
Accurate Arms No. 7 AANo. 7 No.7, #7, AA #7
Hodgdon Longshot Longshot
Ramshot True Blue True Blue
Vihtavuori N350 Viht N350 N350
Vihtavuori 3N38 Viht 3N38 3N38
Hodgdon HS7 HS7 HS7
Hercules/Alliant Blue Dot Blue Dot BDOT
Vihtavouri N105 Super Magnum Viht N105 N105
Accurate Arms No. 9 AANo.9 No.9, #9, AA #9
Ramshot Enforcer Enforcer
Hercules/Alliant 2400 2400
Vihtavuori N110 Viht N110 N110
Hodgdon Lil’Gun Lil’Gun
Norma R123 Norma R123 R123, R123
Hodgdon H110 H110 H110
Winchester 296 296 WW 296, WW 296, Win 296
IMR SR 4759 SR 4759
Vihtavuori N120 Viht N120 N120
IMR 4227 IMR4227
Accurate Arms XMR5744 XMR5744 5744, AA5744
Hodgdon H4227 H4227
Vihtavuori N130 Viht N130 N130
Accurate Arms 1680 AA1680 1680
Norma 200 Norma 200 Norma N200, N200
Vihtavuori N133 Viht N133 N133
Hodgdon H4198 H4198
IMR 4198 IMR4198
Accurate Arms XMR2015 XMR2015 AA2015, AA2015BR
Hercules/Alliant Reloder 7 RE7 RE7, Re7, RL7, RX7
IMR 3031 IMR3031
Hodgdon Benchmark Benchmark
Norma 201 Norma 201 Norma N201, 201, N201
Hodgdon H322 H322 H322
Ramshot XTerminator XTerminator
Accurate Arms 2230 AA2230 2230
Winchester 748 748 WW 748, WW 748, Win 748
Hodgdon Ball C(2) BLC(2) BLC2
Accurate Arms 2460 AA2460 2460
Hodgdon H335 H335 H335
Ramshot TAC TAC
Hodgdon H4895 H4895 H4895
Accurate Arms XMR2495 XMR2495 2495, 2495BR, #2495, AA2495
Hercules/Alliant Reloder 12 RE12 Re12, RL12, RX12
IMR 4895 IMR4895
Vihtavuori N135 Viht N135 N135
Hodgdon Varget VARGET
IMR 4064 IMR4064
Accurate Arms XMR4064 XMR4064 AA4064
Accurate Arms 2520 AA2520 2520, #2520, AA2520
IMR 4320 IMR4320
Norma 202 Norma 202 Norma N202, N202
Vihtavuori N140 Viht N140 N140
Vihtavuori N540 Viht N540 N540
Accurate Arms 2700 AA2700 2700, #2700, AA2700
Ramshot BigGame BigGame
Hercules/Alliant Reloder 15 RE15 Re15, RL15, RX15
Hodgdon H380 H380 H380
Winchester 760 760 WW 760, WW 760, Win 760
Hodgdon H414 H414 H414
Vihtavuori N150 Viht N150 N150
Vihtavuori N550 Viht N550 N550
Accurate Arms XMR4350 XMR4350 AA4350
IMR 4350 IMR4350 4350
Hodgdon H4350 H4350 H4350
Hodgdon H4350 Extreme H4350 EXT
Norma 204 Norma 204 Norma N204, N204
Hercules/Alliant Reloder 19 RE19 Re19, RL19, RX19
Vihtavuori N160 Viht N160 N160
Vihtavuori N560 Viht N560 N560
IMR 4831 IMR4831
Accurate Arms XMR3100 XMR3100 3100, AA3100
Winchester Magnum Rifle WMR Win WMR
Hodgdon H4831SC H4831SC
Hodgdon H4831* H4831 H4831, 4831*
Norma MRP MRP Norma MRP, Magnum Rifle Powder
Hodgdon H450 H450
Accurate Arms MagPro MagPro AA MagPro
Vihtavuori N165 Viht N165 N165
Hercules/Alliant Reloder 22 RE22 Re22, RL22, RX22
Winchester WXR WXR
IMR 7828 IMR 7828 7828
Accurate Arms 8700 AA8700 8700
Hodgdon H1000 H1000 H1000
Ramshot Magnum (formerly BigBoy) Magnum
Alliant Reloader 25 RE25
Hodgdon Retumbo Retumbo
Hodgdon H870 H870 H870
Vihtavuori N170 Viht N170 N170
Vihtavouri 24N41 Viht 24N41 24N41
Hodgdon 50 BMG 50 BMG
Vihtavuori 20N29 Viht 20N29 20N29
AL8 This is the original Alcan AL8 as was sold during the 1960's and '70s. A flake powder which can be also loaded using Hercules (Alliant) Blue Dot data (begin with starting loads). This is new powder.
IMR4475 Original application was U.S. 7.62mm NATO (.308) Ball M80. Was approved as a substitute for WC846. IMR4475 is an extruded powder which has a burning rate similar to IMR3031.
IMR4895 Original application is U.S. .30 Cal Ball M2, AP M2, Tracer M25, and Match M72. THE powder of choice for M1 Garands. An extruded powder which can be loaded using IMR4895 data. This final lot I have came from 1972 loaded Tracer M25 ammo.
WC680(n) Original application is for the 7.62x39mm "AK47" round. This is a ball powder, which can be loaded using AA1680 data.
WC820 Orignal application is for the U.S. Cal. .30 Carbine Ball M1 round. This lot loads at 13.5gr with 110gr FMJ projectile. This is a ball powder which can be loaded using Accurate Arms #9 (AA#9) data.
WC820(n) Orignal application is for the U.S. Cal. .30 Carbine Ball M1 round. This lot loads at 14gr with 110gr FMJ projectile. This is a ball powder which can be loaded using Accurate Arms #9 (AA#9) data.
WC820(f) This is an unusual lot of WC820 that was rejected for use in .30 Carbine ammunition, due to the too fast burning rate. This is a ball powder which can be loaded using Hodgdon HS7 data or Win571 data.
WC820(f) lot #47321 is more like H110 than AA #9.
WC844 Original application is U.S. 5.56mm NATO Ball M193 (55gr) & M855 (62gr), plus Tracer M196 & M856. Typical 55gr load is 26gr, and 62gr load is 25gr. A ball powder which can be loaded using Hodgdon H335 data.
WC846 Original application is U.S. 7.62mm NATO Ball M80 and Tracer M62, typically loaded around 4445 grains. This is a ball powder which can be loaded using Hodgdon BLC(2) data.
WC850 Same as H380. Assoc. w/ chamber ringing. Do not use loads w/ more than 10% air sapce.
WC852 Sold as H414. Burning rate similar to WW760.
WW760BR Older version of WW760. Also sold as H414.
WC852(s) lot #47287 is more like RL19/H4831.
WC860 Original application is U.S. .50 Cal. BMG ammo, used for the Ball M33 and API M8 projectile. A ball powder which can be loaded using Hodgdon H870 or AA8700 data.
WC872(n) Original application is U.S. 20mm Vulcan ammo. A ball powder which can be loaded using Hodgdon H870 or AA8700 data. _________
Good Luck
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