The Firing Line Forums - View Single Post - 260 rem and 6.5 Arisaka: is one powder possible?

T. O'Heir · January 13, 2017, 02:16 PM

"...people really shooting 180 grain projectiles..." Evidently they did or wanted to when that data was complied. 1977 publication date, I think. Lyman 23rd Edition. It's 7.7 Jap data though. Dunno why I thought it was a good idea. Let me fix that.
Doesn't appear you can buy 180's though. The original 6.5 Jap bullet was a 160 grain RN. Changed before 1910 to a spitzer when Japan was trying to emulate European armies.
"...My rifle really likes that round..." That'd decide it for me.
This is the 6.5 Jap data.

Bullet diameter jacketed: .264".
Bullet diameter cast: .264" to .266".
Max Case Length: 1.988".
Trim-to: 1.978".
Max OAL w. bullet: 2.940".

85 grain Jacketed
Powder Start Vel Max Vel
IMR3031 33.0 2506 37.0 2898
IMR4895 35.0 2557 39.0 2840
IMR4064 36.0 2500 40.0* 2873
IMR4320 37.0 2577 41.0 2915
H380 39.0 2577 43.5* 2865

Accuracy load: IMR4320 41.0 2915 fps

100 grain Jacketed
Powder Start Vel Max Vel
IMR3031 32.0 2444 36.0 2754
IMR4895 34.0 2415 38.0 2754
IMR4064 35.0 2421 39.0* 2747
IMR4320 36.0 2481 40.0 2840
IMR4350 38.0 2298 41.5* 2525
BALLC2 38.0 2604 41.0 2840
H335 37.0 2590 40.0 2857
H380 39.0 2525 43.0* 2739

Accuracy Load: H335 37.0 2590 fps

120 grain Jacketed
Powder Start Vel Max Vel
IMR3031 31.0 2358 35.0 2638
IMR4895 33.0 2341 37.0 2659
IMR4064 34.0 2358 38.0* 2688
IMR4320 35.0 2375 39.0 2739
IMR4350 38.0 2325 41.5* 2557
BALLC2 35.0 2380 39.0 2672
H335 35.0 2450 38.0 2702
H380 38.0 2439 43.0* 2702

Accuracy Load: IMR4064 34.0 2358 fps

129 grain Jacketed
Powder Start Vel Max Vel
IMR3031 31.0 2314 34.0 2544
IMR4895 32.0 2237 36.0 2525
IMR4064 33.0 2252 37.0* 2570
IMR4320 34.0 2320 38.0 2610
IMR4350 38.0 2298 41.5* 2557
BALLC2 34.0 2257 38.0 2544
H335 34.0 2331 37.0 2551
H380 38.0 2403 42.0* 2610

Accuracy Load: IMR3031 34.0 2544 fps

140 grain Jacketed
Powder Start Vel Max Vel
IMR3031 30.0 2192 33.0 2409
IMR4895 31.0 2150 35.0 2433
IMR4064 32.0 2183 36.0* 2475
IMR4320 33.0 2232 37.0 2512
IMR4350 36.0 2141 40.0* 2409
BALLC2 33.0 2164 37.0 2444
H335 33.0 2252 36.0 2457
H380 37.0 2298 41.0* 2487

Accuracy Load: IMR3031 31.5 2309 fps
Factory Duplication Load: IMR3031 31.2 2272 fps

160 grain Jacketed
Powder Start Vel Max Vel
IMR3031 25.0 1800 28.0 2020
IMR4895 27.0 1824 30.0 2049
IMR4064 28.0 1868 31.0 2087
IMR4320 29.0 1915 32.0 2123
IMR4350 31.0 1778 35.0* 2100
BALLC2 29.0 1860 32.0 2100
H335 28.0 1805 31.0 2070
H380 32.0 1976 36.0* 2164

Accuracy Load: IMR3031 26.5 1923 fps
Factory Duplucation Load: IMR3031 26.5 1901 fps

103 grain Cast w. Gas Check
Lyman Mold #266305 #2 Alloy
Powder Start Vel Max Vel
2400 16.5 1824 19.0 2044
IMR4227 21.0 2028 23.0 2207
IMR4198 24.0 2114 27.0 2352
IMR4895 28.0 2016 33.0 2375

Accuracy Load: IMR4198 24.0 2114 fps

119 grain Cast w. Gas Check
Lyman Mold #266324 #2 Alloy
Powder Start Vel Max Vel
2400 15.0 1615 18.0 1868
IMR4227 19.5 1893 22.0 2083
IMR4198 22.0 1919 24.0 2057
IMR4895 28.0 1976 31.0 2092

Accuracy Load: 2400 15.0 1615 fps

129 grain Cast w. Gas Check
Lyman Mold #266455 #2 Alloy
Powder Start Vel Max Vel
2400 14.0 1488 19.0 1960
IMR4227 19.0 1818 21.0 1988
IMR4198 23.0 1980 27.0 2145
IMR4895 27.0 1996 31.0 2242

Accuracy Load: IMR4198 23.5 1999 fps

143 grain Cast w. Gas Check
Lyman Mold #266469 #2 Alloy
Powder Start Vel Max Vel
2400 14.0 1515 18.0 1845
IMR4227 18.0 1683 21.0 2159
IMR4198 26.0 1858 32.0 2272

Accuracy Load: IMR4198 26.0 1858 fps

(*) indicates compressed load.

January 13, 2017, 02:16 PM	#8
T. O'Heir Senior Member Join Date: February 13, 2002 Location: Canada Posts: 12,453	6.5 Arisaka Data "...people really shooting 180 grain projectiles..." Evidently they did or wanted to when that data was complied. 1977 publication date, I think. Lyman 23rd Edition. It's 7.7 Jap data though. Dunno why I thought it was a good idea. Let me fix that. Doesn't appear you can buy 180's though. The original 6.5 Jap bullet was a 160 grain RN. Changed before 1910 to a spitzer when Japan was trying to emulate European armies. "...My rifle really likes that round..." That'd decide it for me. This is the 6.5 Jap data. Bullet diameter jacketed: .264". Bullet diameter cast: .264" to .266". Max Case Length: 1.988". Trim-to: 1.978". Max OAL w. bullet: 2.940". 85 grain Jacketed Powder Start Vel Max Vel IMR3031 33.0 2506 37.0 2898 IMR4895 35.0 2557 39.0 2840 IMR4064 36.0 2500 40.0* 2873 IMR4320 37.0 2577 41.0 2915 H380 39.0 2577 43.5* 2865 Accuracy load: IMR4320 41.0 2915 fps 100 grain Jacketed Powder Start Vel Max Vel IMR3031 32.0 2444 36.0 2754 IMR4895 34.0 2415 38.0 2754 IMR4064 35.0 2421 39.0* 2747 IMR4320 36.0 2481 40.0 2840 IMR4350 38.0 2298 41.5* 2525 BALLC2 38.0 2604 41.0 2840 H335 37.0 2590 40.0 2857 H380 39.0 2525 43.0* 2739 Accuracy Load: H335 37.0 2590 fps 120 grain Jacketed Powder Start Vel Max Vel IMR3031 31.0 2358 35.0 2638 IMR4895 33.0 2341 37.0 2659 IMR4064 34.0 2358 38.0* 2688 IMR4320 35.0 2375 39.0 2739 IMR4350 38.0 2325 41.5* 2557 BALLC2 35.0 2380 39.0 2672 H335 35.0 2450 38.0 2702 H380 38.0 2439 43.0* 2702 Accuracy Load: IMR4064 34.0 2358 fps 129 grain Jacketed Powder Start Vel Max Vel IMR3031 31.0 2314 34.0 2544 IMR4895 32.0 2237 36.0 2525 IMR4064 33.0 2252 37.0* 2570 IMR4320 34.0 2320 38.0 2610 IMR4350 38.0 2298 41.5* 2557 BALLC2 34.0 2257 38.0 2544 H335 34.0 2331 37.0 2551 H380 38.0 2403 42.0* 2610 Accuracy Load: IMR3031 34.0 2544 fps 140 grain Jacketed Powder Start Vel Max Vel IMR3031 30.0 2192 33.0 2409 IMR4895 31.0 2150 35.0 2433 IMR4064 32.0 2183 36.0* 2475 IMR4320 33.0 2232 37.0 2512 IMR4350 36.0 2141 40.0* 2409 BALLC2 33.0 2164 37.0 2444 H335 33.0 2252 36.0 2457 H380 37.0 2298 41.0* 2487 Accuracy Load: IMR3031 31.5 2309 fps Factory Duplication Load: IMR3031 31.2 2272 fps 160 grain Jacketed Powder Start Vel Max Vel IMR3031 25.0 1800 28.0 2020 IMR4895 27.0 1824 30.0 2049 IMR4064 28.0 1868 31.0 2087 IMR4320 29.0 1915 32.0 2123 IMR4350 31.0 1778 35.0* 2100 BALLC2 29.0 1860 32.0 2100 H335 28.0 1805 31.0 2070 H380 32.0 1976 36.0* 2164 Accuracy Load: IMR3031 26.5 1923 fps Factory Duplucation Load: IMR3031 26.5 1901 fps 103 grain Cast w. Gas Check Lyman Mold #266305 #2 Alloy Powder Start Vel Max Vel 2400 16.5 1824 19.0 2044 IMR4227 21.0 2028 23.0 2207 IMR4198 24.0 2114 27.0 2352 IMR4895 28.0 2016 33.0 2375 Accuracy Load: IMR4198 24.0 2114 fps 119 grain Cast w. Gas Check Lyman Mold #266324 #2 Alloy Powder Start Vel Max Vel 2400 15.0 1615 18.0 1868 IMR4227 19.5 1893 22.0 2083 IMR4198 22.0 1919 24.0 2057 IMR4895 28.0 1976 31.0 2092 Accuracy Load: 2400 15.0 1615 fps 129 grain Cast w. Gas Check Lyman Mold #266455 #2 Alloy Powder Start Vel Max Vel 2400 14.0 1488 19.0 1960 IMR4227 19.0 1818 21.0 1988 IMR4198 23.0 1980 27.0 2145 IMR4895 27.0 1996 31.0 2242 Accuracy Load: IMR4198 23.5 1999 fps 143 grain Cast w. Gas Check Lyman Mold #266469 #2 Alloy Powder Start Vel Max Vel 2400 14.0 1515 18.0 1845 IMR4227 18.0 1683 21.0 2159 IMR4198 26.0 1858 32.0 2272 Accuracy Load: IMR4198 26.0 1858 fps (*) indicates compressed load. __________________ Spelling and grammar count!