Load data for .375 Raptor + .375 | 305gr | Hammer Claw Hammer

.375 Raptor cartridge drawing
Hammer logo

Load Specifications

Bullet Manufacturer:Hammer
Bullet Weight:305 gr
Bullet Diameter:0.375"
Bullet Length:<<locked>>
Case Length (l3):1.865"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:60 Grains of Water
Primer Size:Large Rifle (LR)
Barrel Length:22"
Max. allowed Pressure:58,015 psi
Recommended Twist Rate:1:6.0

Load data in caliber .375 Raptor with .375 | 305gr | Hammer Claw Hammer bullet and 70 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are Alliant Power Pro 1200-R, SNPE Vectan SP 10 and ADI AR 2219.

Important Notice: DO NOT go below Minimum Charge or above Maximum Charge. Since we have no control over the equipment and components used, any responsibility and liability for the results achieved is rejected.

Only powders/loads that match the current filter criteria are displayed: max pressure of a load ≤ 90% of max. standardized pressure, fill rate ≥ 80% and propellant combustion ≥ 95%. Use the sliders above the tables to adjust these thresholds.

Charge: Powder weight in grains. Start with the minimum load and work up carefully.

FR (Fill Rate): Case fill as a percentage. Values above 100% mean compressed loads.

MaxP / %: Maximum chamber pressure in bar and as a percentage of the standardized maximum for this caliber.

V(0): Muzzle velocity in feet per second (fps) at the standardized barrel length.

z (Powder Burn): Estimated propellant combustion percentage at bullet exit.

A valid access license is required to use the Personalized Load Calculator.

You can find more information in our FAQ: How can I use the Personalized Load Calculator?

Max Load - Barrel Length: 22"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>86%51,982 psi90%2008 fps100%
Accurate 2015ᴾ<<locked>>100%51,822 psi89%2077 fps100%
Accurate 2200<<locked>>90%51,329 psi88%2100 fps95.7%
Accurate 2230<<locked>>90%50,952 psi88%2103 fps96.1%
Accurate 2460<<locked>>96%50,473 psi87%2090 fps99.4%
Accurate 2495ᴾ<<locked>>100%39,624 psi68%1998 fps99.9%
Accurate 2520ᴾ<<locked>>100%50,415 psi87%2126 fps99.2%
Accurate 4064ᴾ<<locked>>100%36,912 psi64%1972 fps98.1%
Accurate LT-30<<locked>>90%49,719 psi86%1985 fps99.9%
Accurate LT-32<<locked>>90%50,198 psi87%1995 fps99%
ADI AR 2206Hᴾ<<locked>>100%47,587 psi82%2077 fps96%
ADI AR 2207<<locked>>90%52,460 psi90%2044 fps100%
ADI AR 2219<<locked>>92%50,357 psi87%2100 fps99.9%
ADI Benchmark 8208ᴾ<<locked>>100%50,734 psi87%2093 fps97.8%
Alliant AR-Compᴾ<<locked>>100%47,761 psi82%2096 fps100%
Alliant Power Pro 1200-R<<locked>>96%51,227 psi88%2169 fps97.6%
Alliant Reloder-10x<<locked>>94%49,385 psi85%2057 fps100%
Alliant Reloder-7<<locked>>88%50,952 psi88%2021 fps100%
Baschieri & Pellagri 106<<locked>>92%50,604 psi87%2018 fps100%
Hodgdon Benchmark<<locked>>98%51,155 psi88%2057 fps98.4%
Hodgdon BL-C2ᴾ<<locked>>100%47,877 psi83%2116 fps98%
Hodgdon CFE223<<locked>>98%50,604 psi87%2172 fps95.8%
Hodgdon H322<<locked>>96%51,837 psi89%2119 fps99.9%
Hodgdon H335<<locked>>94%49,327 psi85%2096 fps99.4%
Hodgdon H4198<<locked>>88%51,532 psi89%2018 fps99.8%
Hodgdon H4895ᴾ<<locked>>100%47,718 psi82%2087 fps96.7%
Hodgdon LEVERevolutionᴾ<<locked>>100%43,294 psi75%2060 fps95.8%
Hodgdon TrailBossᴾ<<locked>>100%32,430 psi56%1204 fps100%
Hodgdon VARGETᴾ<<locked>>100%47,050 psi81%2057 fps96.3%
IMR 3031ᴾ<<locked>>100%45,455 psi78%2093 fps99.9%
IMR 4198<<locked>>94%51,126 psi88%2034 fps100%
IMR 4227<<locked>>84%51,764 psi89%1978 fps100%
IMR 8208 XBRᴾ<<locked>>100%50,734 psi87%2093 fps97.8%
Lovex D073.4<<locked>>90%51,517 psi89%2103 fps99.1%
Lovex D073.5<<locked>>96%50,372 psi87%2090 fps98.6%
Lovex D073.6ᴾ<<locked>>100%44,512 psi77%2064 fps98.4%
Lovex S053<<locked>>84%50,430 psi87%1936 fps100%
Lovex S060ᴾ<<locked>>100%50,169 psi86%2037 fps96.3%
Lovex S062ᴾ<<locked>>100%41,104 psi71%1985 fps96%
Norma 200<<locked>>90%49,850 psi86%2047 fps100%
Norma 201ᴾ<<locked>>100%46,485 psi80%2044 fps97.2%
Norma 202ᴾ<<locked>>100%46,079 psi79%2057 fps99.1%
Ramshot Wild Boarᴾ<<locked>>100%49,864 psi86%2113 fps96.3%
Ramshot X-Terminator<<locked>>96%50,111 psi86%2064 fps96.1%
ReloadSwiss RS 14ᴾ<<locked>>100%32,387 psi56%1234 fps100%
ReloadSwiss RS 36<<locked>>84%51,532 psi89%2008 fps100%
ReloadSwiss RS 40<<locked>>96%51,256 psi88%2096 fps99%
Rottweil R 901ᴾ<<locked>>100%50,749 psi87%2083 fps99.4%
Rottweil R 902ᴾ<<locked>>100%43,859 psi76%2001 fps96.6%
Shooters World AR Plus<<locked>>90%51,517 psi89%2103 fps99.1%
Shooters World Match Rifleᴾ<<locked>>100%44,512 psi77%2064 fps98.4%
Shooters World Precisionᴾ<<locked>>100%41,104 psi71%1985 fps96%
Shooters World Tactical Rifle<<locked>>94%52,460 psi90%2073 fps97.6%
SNPE Vectan BA6 1/2<<locked>>88%51,547 psi89%1827 fps100%
SNPE Vectan SP 10<<locked>>92%50,662 psi87%2106 fps99.5%
SNPE Vectan SP 3<<locked>>94%50,502 psi87%2067 fps100%
SNPE Vectan Tubal 3000ᴾ<<locked>>100%50,285 psi87%2024 fps99.4%
SNPE Vectan Tubal 5000ᴾ<<locked>>100%40,176 psi69%1916 fps98.8%
Somchem S321<<locked>>98%51,851 psi89%2129 fps98.3%
Somchem S335ᴾ<<locked>>100%48,298 psi83%2024 fps99.7%
Somchem S341ᴾ<<locked>>100%48,254 psi83%2070 fps95.7%
Vihtavuori N120<<locked>>88%49,530 psi85%1975 fps100%
Vihtavuori N130<<locked>>96%50,024 psi86%2018 fps100%
Vihtavuori N133ᴾ<<locked>>100%49,298 psi85%2024 fps100%
Vihtavuori N135ᴾ<<locked>>100%41,176 psi71%1998 fps99.9%
Vihtavuori N140ᴾ<<locked>>100%43,859 psi76%2008 fps99%
Vihtavuori N530ᴾ<<locked>>100%51,576 psi89%2096 fps98%
Vihtavuori N540ᴾ<<locked>>100%42,192 psi73%2005 fps98.4%
Winchester 748ᴾ<<locked>>100%49,400 psi85%2129 fps98.4%
Winchester StaBALL Matchᴾ<<locked>>100%45,237 psi78%2060 fps96%

Recommended = one of the top powders for this cartridge and bullet combination.

Start Load - Barrel Length: 22"

PowderChargeFRMaxP%V(0)z
Accurate 1680<<locked>>80%42,888 psi74%1903 fps100%
Accurate 2015<<locked>>80%28,079 psi48%1732 fps97.5%
Accurate 2200<<locked>>88%48,066 psi83%2057 fps95%
Accurate 2230<<locked>>88%47,558 psi82%2060 fps95.3%
Accurate 2460<<locked>>82%31,633 psi55%1818 fps95.6%
Accurate 2495<<locked>>82%22,060 psi38%1670 fps95.5%
Accurate 2520<<locked>>86%31,227 psi54%1847 fps95%
Accurate 4064<<locked>>92%28,689 psi49%1827 fps95.6%
Accurate LT-30<<locked>>80%36,811 psi63%1811 fps98.4%
Accurate LT-32<<locked>>80%37,217 psi64%1814 fps96.7%
ADI AR 2206H<<locked>>98%44,947 psi77%2041 fps95.4%
ADI AR 2207<<locked>>80%38,682 psi67%1880 fps100%
ADI AR 221935.8 gr80%33,939 psi59%1867 fps97.6%
ADI Benchmark 8208<<locked>>92%39,914 psi69%1946 fps95.5%
Alliant AR-Comp<<locked>>80%25,672 psi44%1739 fps98.9%
Alliant Power Pro 1200-R39 gr90%42,264 psi73%2047 fps95.7%
Alliant Reloder-10x<<locked>>80%32,387 psi56%1818 fps99.4%
Alliant Reloder-7<<locked>>80%39,885 psi69%1883 fps100%
Baschieri & Pellagri 106<<locked>>80%34,737 psi60%1804 fps98.2%
Hodgdon Benchmark<<locked>>86%35,969 psi62%1844 fps95%
Hodgdon BL-C2<<locked>>92%36,738 psi63%1952 fps95.4%
Hodgdon CFE223<<locked>>96%47,529 psi82%2129 fps95%
Hodgdon H322<<locked>>80%31,096 psi54%1811 fps96.7%
Hodgdon H335<<locked>>80%31,140 psi54%1821 fps95.6%
Hodgdon H4198<<locked>>80%40,625 psi70%1877 fps98.7%
Hodgdon H4895<<locked>>96%42,308 psi73%2014 fps95.4%
Hodgdon LEVERevolution<<locked>>98%40,654 psi70%2018 fps95%
Hodgdon TrailBoss<<locked>>80%23,989 psi41%1073 fps100%
Hodgdon VARGET<<locked>>96%41,771 psi72%1982 fps95%
IMR 3031<<locked>>82%26,136 psi45%1752 fps95.6%
IMR 4198<<locked>>80%34,360 psi59%1811 fps99.9%
IMR 4227<<locked>>80%45,948 psi79%1913 fps100%
IMR 8208 XBR<<locked>>92%39,914 psi69%1946 fps95.5%
Lovex D073.4<<locked>>80%36,535 psi63%1900 fps96.5%
Lovex D073.5<<locked>>86%36,013 psi62%1896 fps95.6%
Lovex D073.6<<locked>>90%31,821 psi55%1870 fps95.2%
Lovex S053<<locked>>80%45,179 psi78%1877 fps100%
Lovex S060<<locked>>96%44,585 psi77%1965 fps95.1%
Lovex S062<<locked>>98%38,566 psi66%1946 fps95.3%
Norma 200<<locked>>80%36,564 psi63%1873 fps100%
Norma 201<<locked>>94%38,812 psi67%1936 fps95.4%
Norma 202<<locked>>86%30,037 psi52%1804 fps95.3%
Ramshot Wild Boar<<locked>>98%46,804 psi81%2073 fps95.6%
Ramshot X-Terminator<<locked>>94%47,108 psi81%2024 fps95.5%
ReloadSwiss RS 14<<locked>>80%23,830 psi41%1099 fps100%
ReloadSwiss RS 36<<locked>>80%45,571 psi79%1942 fps100%
ReloadSwiss RS 40<<locked>>82%32,866 psi57%1831 fps95%
Rottweil R 901<<locked>>82%30,153 psi52%1768 fps95%
Rottweil R 902<<locked>>96%38,856 psi67%1929 fps95.3%
Shooters World AR Plus<<locked>>80%36,535 psi63%1900 fps96.5%
Shooters World Match Rifle<<locked>>90%31,821 psi55%1870 fps95.2%
Shooters World Precision<<locked>>98%38,566 psi66%1946 fps95.3%
Shooters World Tactical Rifle<<locked>>86%40,103 psi69%1916 fps95%
SNPE Vectan BA6 1/2<<locked>>80%42,047 psi72%1726 fps100%
SNPE Vectan SP 1037 gr80%34,069 psi59%1867 fps96.6%
SNPE Vectan SP 3<<locked>>80%33,040 psi57%1821 fps98.2%
SNPE Vectan Tubal 3000<<locked>>84%30,850 psi53%1745 fps95.4%
SNPE Vectan Tubal 5000<<locked>>88%28,239 psi49%1713 fps95.5%
Somchem S321<<locked>>88%37,072 psi64%1929 fps95.1%
Somchem S335<<locked>>82%28,297 psi49%1716 fps95.5%
Somchem S341<<locked>>98%45,281 psi78%2031 fps95%
Vihtavuori N120<<locked>>80%38,783 psi67%1847 fps100%
Vihtavuori N130<<locked>>80%31,241 psi54%1755 fps99%
Vihtavuori N133<<locked>>80%27,180 psi47%1690 fps96.9%
Vihtavuori N135<<locked>>80%22,539 psi39%1647 fps95.1%
Vihtavuori N140<<locked>>86%28,660 psi49%1759 fps95%
Vihtavuori N530<<locked>>92%39,813 psi69%1942 fps95.5%
Vihtavuori N540<<locked>>90%31,024 psi53%1821 fps95.3%
Winchester 748<<locked>>90%35,679 psi62%1926 fps95.2%
Winchester StaBALL Match<<locked>>98%42,482 psi73%2021 fps95.2%

Recommended = one of the top powders for this cartridge and bullet combination.

ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.

<<locked>> you need an access license to unlock this data.

This overview compares 89 powders for .375 Raptor loaded with the .375 | 305gr | Hammer Claw Hammer . Hodgdon CFE223 delivers the highest muzzle velocity at 2,172 fps; across all powders the maximum-charge window runs from 1,204 fps to 2,172 fps. Accurate 2015 gives the best case fill at 100 %, and 89 of the 89 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (400 MPa), the top charges use 56–90 %, leaving at least 10 % headroom. The 305.0 gr projectile in 0.375" calls for a 1:6.0 twist; slower twists will usually not stabilise this weight. Accurate 2015, Accurate 2495, Accurate 2520 reach 100 % fill or more at maximum charge, so these are compressed loads: they need a long drop tube to seat cleanly and react sensitively to the case capacity of your own brass lot. Alliant Power Pro 1200-R, SNPE Vectan SP 10, ADI AR 2219 rank at the top here: for .375 Raptor with the .375 | 305gr | Hammer Claw Hammer they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, ADI AR 2208, Alliant Power Pro 2000-MR, Alliant Reloder- TS 15.5 burn incompletely and react more sensitively to barrel length and temperature. Hodgdon TrailBoss, ReloadSwiss RS 14 stay subsonic at start load. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.

← All load data