Load data for .300 Weath. Mag. + .308 | 145gr | SUS-TAC HPT

.300 Weath. Mag. cartridge drawing
SUS-TAC logo

Load Specifications

Bullet Manufacturer:SUS-TAC
Bullet Weight:145 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Case Length (l3):2.824"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:98.9 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:63,817 psi
Recommended Twist Rate:1:12.0

Load data in caliber .300 Weath. Mag. with .308 | 145gr | SUS-TAC HPT bullet and 93 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 60, Alliant Reloder-16 and Hodgdon H414.

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.

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

Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>84%56,449 psi88%3077 fps100%
Accurate 2700<<locked>>84%54,215 psi85%3077 fps97.4%
Accurate 3100ᴾ<<locked>>100%51,706 psi81%3107 fps98.5%
Accurate 4064<<locked>>86%56,550 psi89%3130 fps100%
Accurate 4350<<locked>>94%57,638 psi90%3238 fps99.9%
ADI AR 2206H<<locked>>82%55,651 psi87%3159 fps100%
ADI AR 2208<<locked>>88%56,913 psi89%3163 fps100%
ADI AR 2209<<locked>>98%54,998 psi86%3209 fps96.7%
Alliant Power Pro 2000-MR<<locked>>84%56,217 psi88%3294 fps100%
Alliant Reloder- TS 15.5<<locked>>88%57,595 psi90%3189 fps100%
Alliant Reloder-15<<locked>>84%54,288 psi85%3153 fps99.9%
Alliant Reloder-16<<locked>>94%54,505 psi85%3238 fps99.9%
Alliant Reloder-17<<locked>>90%55,840 psi88%3268 fps100%
Alliant Reloder-19<<locked>>98%54,128 psi85%3196 fps96.7%
Alliant Reloder-22ᴾ<<locked>>100%51,271 psi80%3186 fps96.2%
Alliant Reloder-23ᴾ<<locked>>100%48,385 psi76%3130 fps100%
Alliant Reloder-25ᴾ<<locked>>100%42,250 psi66%3022 fps97.2%
Alliant Reloder-26ᴾ<<locked>>100%55,956 psi88%3337 fps99.9%
Baschieri & Pellagri 107<<locked>>82%55,767 psi87%3176 fps99.9%
Bofors RP3<<locked>>86%54,868 psi86%3146 fps100%
Bofors RP5ᴾ<<locked>>100%51,271 psi80%3186 fps96.2%
Bofors RP7<<locked>>90%54,534 psi85%3120 fps97.7%
Hodgdon H380<<locked>>86%55,463 psi87%3163 fps99.6%
Hodgdon H414<<locked>>92%56,101 psi88%3228 fps98.5%
Hodgdon H4350<<locked>>90%55,898 psi88%3182 fps97.3%
Hodgdon H4895<<locked>>82%56,246 psi88%3169 fps100%
Hodgdon Hybrid 100V<<locked>>96%54,897 psi86%3159 fps100%
Hodgdon LEVERevolution<<locked>>84%56,637 psi89%3205 fps100%
Hodgdon Superformance<<locked>>92%56,623 psi89%3268 fps98.4%
Hodgdon TrailBossᴾ<<locked>>100%36,114 psi57%2001 fps100%
Hodgdon VARGET<<locked>>84%57,363 psi90%3173 fps100%
IMR 3031<<locked>>82%56,971 psi89%3153 fps100%
IMR 4064<<locked>>86%56,318 psi88%3146 fps100%
IMR 4166 Enduron<<locked>>84%55,608 psi87%3120 fps98.3%
IMR 4350<<locked>>94%55,448 psi87%3156 fps97.9%
IMR 4451 Enduron<<locked>>90%56,072 psi88%3153 fps98.3%
IMR 4831<<locked>>94%54,273 psi85%3166 fps99.8%
IMR 4895<<locked>>84%55,666 psi87%3186 fps100%
Lovex D073.6<<locked>>82%56,028 psi88%3130 fps100%
Lovex S060<<locked>>82%54,563 psi86%3081 fps100%
Lovex S062<<locked>>86%56,565 psi89%3143 fps100%
Lovex S065<<locked>>92%56,101 psi88%3150 fps99.3%
Lovex S070<<locked>>94%57,392 psi90%3192 fps98.8%
Lovex S071ᴾ<<locked>>100%42,685 psi67%2933 fps96.5%
Norma 201<<locked>>82%54,476 psi85%3100 fps100%
Norma 202<<locked>>82%55,042 psi86%3100 fps100%
Norma 203B<<locked>>86%57,261 psi90%3199 fps100%
Norma 204<<locked>>94%56,318 psi88%3209 fps96.9%
Norma MRPᴾ<<locked>>100%54,607 psi86%3284 fps98.3%
Norma URP<<locked>>94%56,014 psi88%3215 fps99.8%
Ramshot Big Game<<locked>>84%54,404 psi85%3163 fps100%
Ramshot Hunter<<locked>>94%55,056 psi86%3215 fps99%
ReloadSwiss RS 14ᴾ<<locked>>100%36,680 psi57%2044 fps100%
ReloadSwiss RS 50<<locked>>86%55,477 psi87%3143 fps98.7%
ReloadSwiss RS 52<<locked>>82%55,216 psi87%3225 fps99.9%
ReloadSwiss RS 60<<locked>>88%55,347 psi87%3264 fps100%
ReloadSwiss RS 62<<locked>>94%57,392 psi90%3255 fps99.8%
ReloadSwiss RS 70<<locked>>94%56,173 psi88%3287 fps99.8%
Rottweil R 902<<locked>>84%55,100 psi86%3104 fps100%
Rottweil R 903<<locked>>88%54,926 psi86%3143 fps100%
Rottweil R 904<<locked>>98%56,695 psi89%3179 fps95.9%
Rottweil R 905ᴾ<<locked>>100%56,898 psi89%3241 fps97.4%
Rottweil R 907<<locked>>90%54,534 psi85%3120 fps97.7%
Shooters World Long Rifle<<locked>>92%56,101 psi88%3150 fps99.3%
Shooters World Match Rifle<<locked>>82%56,028 psi88%3130 fps100%
Shooters World Precision<<locked>>86%56,565 psi89%3143 fps100%
Shooters World SW4350<<locked>>94%57,392 psi90%3192 fps98.8%
SNPE Vectan SP 11<<locked>>88%56,637 psi89%3205 fps100%
SNPE Vectan SP 7<<locked>>82%57,145 psi90%3163 fps99.7%
SNPE Vectan SP 9<<locked>>82%54,201 psi85%3123 fps100%
SNPE Vectan Tubal 3000<<locked>>82%55,303 psi87%3031 fps100%
SNPE Vectan Tubal 5000<<locked>>88%56,159 psi88%3031 fps100%
SNPE Vectan Tubal 7000<<locked>>92%56,072 psi88%3097 fps98.4%
SNPE Vectan Tubal 8000ᴾ<<locked>>100%56,391 psi88%3235 fps97.3%
Somchem S335<<locked>>82%55,071 psi86%3028 fps100%
Somchem S341<<locked>>82%56,753 psi89%3150 fps100%
Somchem S355<<locked>>88%54,911 psi86%3140 fps100%
Somchem S365<<locked>>96%55,259 psi87%3222 fps100%
Somchem S385ᴾ<<locked>>100%57,682 psi90%3215 fps98.2%
Vihtavuori N133<<locked>>82%55,753 psi87%3015 fps100%
Vihtavuori N135<<locked>>84%55,216 psi87%3061 fps100%
Vihtavuori N140<<locked>>84%55,724 psi87%3077 fps100%
Vihtavuori N150<<locked>>90%56,347 psi88%3114 fps100%
Vihtavuori N160<<locked>>92%54,810 psi86%3156 fps99.7%
Vihtavuori N165ᴾ<<locked>>100%49,937 psi78%3064 fps96.3%
Vihtavuori N540<<locked>>86%57,537 psi90%3123 fps100%
Vihtavuori N550<<locked>>94%57,464 psi90%3215 fps99.8%
Vihtavuori N555ᴾ<<locked>>100%54,244 psi85%3215 fps99.9%
Winchester 6.5 StaBALL<<locked>>92%54,462 psi85%3120 fps100%
Winchester 760<<locked>>92%56,318 psi88%3232 fps98.5%
Winchester StaBALL HDᴾ<<locked>>100%43,729 psi69%3169 fps100%
Winchester StaBALL Match<<locked>>82%54,201 psi85%3130 fps100%
Winchester Supreme 780ᴾ<<locked>>100%54,259 psi85%3146 fps96.6%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 2495<<locked>>80%49,516 psi78%2972 fps100%
Accurate 2700<<locked>>80%47,500 psi74%2953 fps95.9%
Accurate 3100<<locked>>92%39,189 psi61%2858 fps95.4%
Accurate 4064<<locked>>80%46,847 psi73%2972 fps100%
Accurate 4350<<locked>>80%35,375 psi55%2789 fps95.9%
ADI AR 2206H<<locked>>80%52,286 psi82%3100 fps99.9%
ADI AR 2208<<locked>>80%44,396 psi70%2933 fps98.8%
ADI AR 2209<<locked>>94%48,240 psi76%3081 fps95%
Alliant Power Pro 2000-MR<<locked>>80%48,646 psi76%3156 fps99.5%
Alliant Reloder- TS 15.5<<locked>>80%44,657 psi70%2959 fps99.7%
Alliant Reloder-15<<locked>>80%47,834 psi75%3035 fps99.4%
Alliant Reloder-1663.4 gr80%34,737 psi54%2799 fps95.9%
Alliant Reloder-17<<locked>>80%39,276 psi62%2943 fps98.9%
Alliant Reloder-19<<locked>>94%47,601 psi75%3068 fps95%
Alliant Reloder-22<<locked>>98%47,979 psi75%3120 fps95.3%
Alliant Reloder-23<<locked>>86%30,690 psi48%2700 fps95.8%
Alliant Reloder-25<<locked>>96%37,246 psi58%2890 fps95.2%
Alliant Reloder-26<<locked>>88%35,853 psi56%2904 fps95.6%
Baschieri & Pellagri 107<<locked>>80%52,011 psi82%3107 fps99.6%
Bofors RP3<<locked>>80%44,933 psi70%2969 fps99.8%
Bofors RP5<<locked>>98%47,979 psi75%3120 fps95.3%
Bofors RP7<<locked>>84%45,121 psi71%2943 fps95.5%
Hodgdon H380<<locked>>80%45,411 psi71%2976 fps98.2%
Hodgdon H41470.1 gr84%42,815 psi67%2966 fps95.5%
Hodgdon H4350<<locked>>86%49,081 psi77%3058 fps95.8%
Hodgdon H4895<<locked>>80%52,866 psi83%3114 fps100%
Hodgdon Hybrid 100V<<locked>>80%32,242 psi51%2690 fps96.7%
Hodgdon LEVERevolution<<locked>>80%49,458 psi78%3084 fps100%
Hodgdon Superformance<<locked>>86%45,411 psi71%3051 fps95.8%
Hodgdon TrailBoss<<locked>>80%26,919 psi42%1788 fps100%
Hodgdon VARGET<<locked>>80%50,560 psi79%3058 fps100%
IMR 3031<<locked>>80%53,287 psi84%3097 fps100%
IMR 4064<<locked>>80%46,673 psi73%2972 fps99.3%
IMR 4166 Enduron<<locked>>80%48,950 psi77%2999 fps97.1%
IMR 4350<<locked>>88%45,818 psi72%2972 fps95.7%
IMR 4451 Enduron<<locked>>82%43,787 psi69%2913 fps95.6%
IMR 4831<<locked>>80%34,156 psi54%2740 fps95.5%
IMR 4895<<locked>>80%49,052 psi77%3068 fps99.8%
Lovex D073.6<<locked>>80%52,533 psi82%3077 fps100%
Lovex S060<<locked>>80%51,285 psi80%3025 fps99.9%
Lovex S062<<locked>>80%46,818 psi73%2972 fps100%
Lovex S065<<locked>>80%38,682 psi61%2802 fps95.6%
Lovex S070<<locked>>84%41,916 psi66%2894 fps95.4%
Lovex S071<<locked>>98%40,059 psi63%2874 fps95.7%
Norma 201<<locked>>80%51,140 psi80%3045 fps100%
Norma 202<<locked>>80%51,634 psi81%3045 fps100%
Norma 203B<<locked>>80%47,195 psi74%3022 fps99.6%
Norma 204<<locked>>90%49,008 psi77%3074 fps95.1%
Norma MRP<<locked>>94%44,237 psi69%3074 fps95.7%
Norma URP<<locked>>80%35,317 psi55%2785 fps95.7%
Ramshot Big Game<<locked>>80%47,326 psi74%3038 fps99.5%
Ramshot Hunter<<locked>>84%39,320 psi62%2894 fps95.3%
ReloadSwiss RS 14<<locked>>80%27,485 psi43%1834 fps100%
ReloadSwiss RS 50<<locked>>80%45,498 psi71%2956 fps96.9%
ReloadSwiss RS 52<<locked>>80%51,459 psi81%3159 fps99.7%
ReloadSwiss RS 6068.3 gr80%41,771 psi65%3012 fps100%
ReloadSwiss RS 62<<locked>>80%35,099 psi55%2802 fps95.4%
ReloadSwiss RS 70<<locked>>82%36,912 psi58%2871 fps95.5%
Rottweil R 902<<locked>>80%48,733 psi76%2992 fps100%
Rottweil R 903<<locked>>80%42,293 psi66%2910 fps99.4%
Rottweil R 904<<locked>>96%53,142 psi83%3120 fps95.1%
Rottweil R 905<<locked>>96%49,792 psi78%3114 fps95.8%
Rottweil R 907<<locked>>84%45,121 psi71%2943 fps95.5%
Shooters World Long Rifle<<locked>>80%38,682 psi61%2802 fps95.6%
Shooters World Match Rifle<<locked>>80%52,533 psi82%3077 fps100%
Shooters World Precision<<locked>>80%46,818 psi73%2972 fps100%
Shooters World SW4350<<locked>>84%41,916 psi66%2894 fps95.4%
SNPE Vectan SP 11<<locked>>80%43,337 psi68%2963 fps99.1%
SNPE Vectan SP 7<<locked>>80%53,200 psi83%3097 fps99.3%
SNPE Vectan SP 9<<locked>>80%50,763 psi80%3064 fps99.9%
SNPE Vectan Tubal 3000<<locked>>80%52,040 psi82%2982 fps100%
SNPE Vectan Tubal 5000<<locked>>80%43,874 psi69%2835 fps100%
SNPE Vectan Tubal 7000<<locked>>84%43,178 psi68%2858 fps95.7%
SNPE Vectan Tubal 8000<<locked>>96%49,342 psi77%3107 fps95.7%
Somchem S335<<locked>>80%51,764 psi81%2979 fps100%
Somchem S341<<locked>>80%52,881 psi83%3087 fps99.9%
Somchem S355<<locked>>80%42,728 psi67%2913 fps99.3%
Somchem S365<<locked>>80%31,720 psi50%2733 fps97.9%
Somchem S385<<locked>>92%44,396 psi70%2969 fps95.3%
Vihtavuori N133<<locked>>80%52,533 psi82%2966 fps100%
Vihtavuori N135<<locked>>80%48,791 psi76%2963 fps100%
Vihtavuori N140<<locked>>80%49,081 psi77%2972 fps100%
Vihtavuori N150<<locked>>80%40,770 psi64%2838 fps99.7%
Vihtavuori N160<<locked>>80%36,695 psi57%2789 fps96.2%
Vihtavuori N165<<locked>>98%46,557 psi73%2999 fps95.4%
Vihtavuori N540<<locked>>80%47,427 psi74%2959 fps100%
Vihtavuori N550<<locked>>80%36,230 psi57%2789 fps95.8%
Vihtavuori N555<<locked>>84%31,676 psi50%2726 fps95%
Winchester 6.5 StaBALL<<locked>>80%36,042 psi56%2759 fps98.3%
Winchester 760<<locked>>84%43,004 psi67%2972 fps95.5%
Winchester StaBALL HD<<locked>>88%29,095 psi46%2730 fps95.7%
Winchester StaBALL Match<<locked>>80%50,720 psi79%3071 fps100%
Winchester Supreme 780<<locked>>98%50,691 psi79%3081 fps95.8%

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 107 powders for .300 Weath. Mag. loaded with the .308 | 145gr | SUS-TAC HPT. Alliant Reloder-26 delivers the highest muzzle velocity at 3,337 fps; across all powders the maximum-charge window runs from 2,001 fps to 3,337 fps. Accurate 3100 gives the best case fill at 100 %, and 107 of the 107 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (440 MPa), the top charges use 57–90 %, leaving at least 10 % headroom. The 145.0 gr projectile in 0.308" calls for a 1:12.0 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate MAGPRO, ADI AR 2213 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. ReloadSwiss RS 60, Alliant Reloder-16, Hodgdon H414 rank at the top here: for .300 Weath. Mag. with the .308 | 145gr | SUS-TAC HPT they combine a high case fill with complete burn and sit in the upper velocity band. As outliers, Accurate MAGPRO, ADI AR 2213, Bofors RP15 burn incompletely and react more sensitively to barrel length and temperature. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.

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