Load data for .26 Nosler + .264 | 125gr | Hasler ARIETE

.26 Nosler cartridge drawing
Hasler logo

Load Specifications

Bullet Manufacturer:Hasler
Bullet Weight:125 gr
Bullet Diameter:0.264"
Bullet Length:<<locked>>
Case Length (l3):2.59"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:100.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:24"
Max. allowed Pressure:65,000 psi
Recommended Twist Rate:1:8.0

Load data in caliber .26 Nosler with .264 | 125gr | Hasler ARIETE bullet and 38 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ADI AR 2218, Alliant Reloder-50 and ReloadSwiss RS 80.

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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Max Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>82%58,610 psi90%3077 fps100%
Accurate 8700ᴾ<<locked>>100%56,478 psi87%3153 fps97.3%
ADI AR 2213<<locked>>82%55,811 psi86%3153 fps99.6%
ADI AR 2217<<locked>>90%55,448 psi85%3140 fps99.8%
ADI AR 2218<<locked>>94%55,970 psi86%3261 fps98%
ADI AR 2225<<locked>>92%55,608 psi86%3182 fps100%
Alliant Reloder-22<<locked>>82%57,261 psi88%3159 fps100%
Alliant Reloder-23<<locked>>82%56,014 psi86%3074 fps100%
Alliant Reloder-25<<locked>>86%56,362 psi87%3150 fps100%
Alliant Reloder-33<<locked>>90%55,143 psi85%3189 fps97.6%
Alliant Reloder-50<<locked>>94%57,058 psi88%3209 fps97.5%
Baschieri & Pellagri 109<<locked>>86%58,552 psi90%3153 fps98.4%
Bofors RP15<<locked>>84%56,724 psi87%3153 fps100%
Bofors RP30<<locked>>88%57,014 psi88%3179 fps99.9%
Bofors RP5<<locked>>82%57,261 psi88%3159 fps100%
Hodgdon H1000<<locked>>88%56,637 psi87%3159 fps100%
Hodgdon H4831<<locked>>82%58,044 psi89%3136 fps99.5%
Hodgdon H4831 SC<<locked>>82%57,203 psi88%3123 fps99.4%
Hodgdon Retumbo<<locked>>86%55,695 psi86%3241 fps100%
Hodgdon TrailBossᴾ<<locked>>100%38,493 psi59%2047 fps100%
IMR 4955 Enduron<<locked>>82%57,711 psi89%3107 fps99.5%
IMR 7828 SSC<<locked>>84%58,334 psi90%3202 fps99.8%
IMR 8133 Enduron<<locked>>94%55,912 psi86%3176 fps99.8%
Lovex S071<<locked>>86%57,377 psi88%3058 fps100%
Norma 217<<locked>>94%57,537 psi89%3202 fps100%
Ramshot Grand<<locked>>82%56,260 psi87%3169 fps99.8%
Ramshot Magnum<<locked>>84%55,419 psi85%3104 fps100%
ReloadSwiss RS 14ᴾ<<locked>>100%39,740 psi61%2096 fps100%
ReloadSwiss RS 76<<locked>>86%56,507 psi87%3228 fps100%
ReloadSwiss RS 80<<locked>>88%56,565 psi87%3199 fps99.3%
SNPE Vectan SP 13<<locked>>98%55,332 psi85%3107 fps96.7%
Vihtavuori N165<<locked>>84%57,450 psi88%3077 fps100%
Vihtavuori N170<<locked>>88%57,580 psi89%3114 fps96.6%
Vihtavuori N565<<locked>>84%55,622 psi86%3130 fps99.5%
Vihtavuori N568<<locked>>88%56,753 psi87%3199 fps99%
Vihtavuori N570<<locked>>90%57,914 psi89%3264 fps97.7%
Winchester StaBALL HD<<locked>>82%57,421 psi88%3179 fps100%
Winchester Supreme 780<<locked>>82%56,898 psi88%3084 fps100%

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

Start Load - Barrel Length: 24"

PowderChargeFRMaxP%V(0)z
Accurate 3100<<locked>>80%55,230 psi85%3025 fps100%
Accurate 8700<<locked>>96%49,763 psi77%3031 fps95.7%
ADI AR 2213<<locked>>80%52,489 psi81%3094 fps99.3%
ADI AR 2217<<locked>>80%41,075 psi63%2851 fps97.4%
ADI AR 221878.8 gr88%46,369 psi71%3051 fps95.1%
ADI AR 2225<<locked>>80%39,001 psi60%2848 fps99.4%
Alliant Reloder-22<<locked>>80%53,983 psi83%3104 fps99.9%
Alliant Reloder-23<<locked>>80%52,910 psi81%3022 fps100%
Alliant Reloder-25<<locked>>80%47,123 psi72%2989 fps100%
Alliant Reloder-33<<locked>>84%45,629 psi70%2999 fps95.1%
Alliant Reloder-5080 gr88%47,427 psi73%3022 fps95%
Baschieri & Pellagri 109<<locked>>80%49,066 psi75%2976 fps96.4%
Bofors RP15<<locked>>80%50,589 psi78%3041 fps99.6%
Bofors RP30<<locked>>80%45,049 psi69%2946 fps98.4%
Bofors RP5<<locked>>80%53,983 psi83%3104 fps99.9%
Hodgdon H1000<<locked>>80%44,150 psi68%2923 fps98.7%
Hodgdon H4831<<locked>>80%54,636 psi84%3077 fps99.1%
Hodgdon H4831 SC<<locked>>80%53,911 psi83%3064 fps99.1%
Hodgdon Retumbo<<locked>>80%46,151 psi71%3058 fps99.7%
Hodgdon TrailBoss<<locked>>80%29,225 psi45%1834 fps100%
IMR 4955 Enduron<<locked>>80%54,694 psi84%3051 fps99.2%
IMR 7828 SSC<<locked>>80%51,488 psi79%3081 fps99.2%
IMR 8133 Enduron<<locked>>80%37,362 psi57%2782 fps96.1%
Lovex S071<<locked>>80%48,863 psi75%2913 fps100%
Norma 217<<locked>>80%38,130 psi59%2818 fps98.5%
Ramshot Grand<<locked>>80%52,808 psi81%3107 fps99.5%
Ramshot Magnum<<locked>>80%48,762 psi75%2986 fps99.8%
ReloadSwiss RS 14<<locked>>80%30,066 psi46%1877 fps100%
ReloadSwiss RS 76<<locked>>80%46,195 psi71%3041 fps100%
ReloadSwiss RS 8072.9 gr80%43,787 psi67%2946 fps96.8%
SNPE Vectan SP 13<<locked>>94%49,255 psi76%2992 fps95.1%
Vihtavuori N165<<locked>>80%51,111 psi79%2972 fps99.9%
Vihtavuori N170<<locked>>84%51,169 psi79%2995 fps95.1%
Vihtavuori N565<<locked>>80%49,603 psi76%3018 fps98.7%
Vihtavuori N568<<locked>>80%44,295 psi68%2949 fps96.3%
Vihtavuori N570<<locked>>84%48,124 psi74%3071 fps95.3%
Winchester StaBALL HD<<locked>>80%53,664 psi83%3123 fps100%
Winchester Supreme 780<<locked>>80%53,592 psi82%3028 fps99.8%

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 38 powders for .26 Nosler loaded with the .264 | 125gr | Hasler ARIETE. Vihtavuori N570 delivers the highest muzzle velocity at 3,264 fps; across all powders the maximum-charge window runs from 2,047 fps to 3,264 fps. Accurate 8700 gives the best case fill at 100 %, and 38 of the 38 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (448 MPa), the top charges use 59–90 %, leaving at least 10 % headroom. The 125.0 gr projectile in 0.264" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 8700, Hodgdon TrailBoss, ReloadSwiss RS 14 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. ADI AR 2218, Alliant Reloder-50, ReloadSwiss RS 80 rank at the top here: for .26 Nosler with the .264 | 125gr | Hasler ARIETE they combine a high case fill with complete burn and sit in the upper velocity band. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.

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