Load Specifications
Bullet:.308 | 88gr | Inceptor SRR
Bullet Manufacturer:Inceptor
Bullet Weight:88 gr
Bullet Diameter:0.308"
Bullet Length:<<locked>>
Caliber:7.82 Warbird load data
Case Length (l3):2.8"
Cartridge Length (C.O.L.):<<locked>>
Case Capacity:121.5 Grains of Water
Primer Size:Large Rifle Magnum (LRM)
Barrel Length:26"
Max. allowed Pressure:66,717 psi
Recommended Twist Rate:1:11.5
Load data in caliber 7.82 Warbird with .308 | 88gr | Inceptor SRR bullet and 96 powders. The key underlying parameters are shown in the table above.
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: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 82% | 56,985 psi | 85% | 3829 fps | 100% |
| Accurate 2495 | <<locked>> | 86% | 57,116 psi | 86% | 3845 fps | 100% |
| Accurate 2520 | <<locked>> | 82% | 59,074 psi | 89% | 3927 fps | 100% |
| Accurate 2700 | <<locked>> | 88% | 60,191 psi | 90% | 3898 fps | 97.1% |
| Accurate 3100ᴾ | <<locked>> | 100% | 50,285 psi | 75% | 3743 fps | 97% |
| Accurate 4064 | <<locked>> | 88% | 57,566 psi | 86% | 3901 fps | 100% |
| Accurate 4350 | <<locked>> | 96% | 59,901 psi | 90% | 3999 fps | 99.6% |
| ADI APS 450 | <<locked>> | 82% | 59,843 psi | 90% | 3264 fps | 100% |
| ADI AR 2206H | <<locked>> | 84% | 57,116 psi | 86% | 3944 fps | 99.8% |
| ADI AR 2208 | <<locked>> | 90% | 58,581 psi | 88% | 3940 fps | 99.7% |
| ADI Benchmark 8208 | <<locked>> | 84% | 59,509 psi | 89% | 3953 fps | 100% |
| Alliant AR-Comp | <<locked>> | 82% | 56,884 psi | 85% | 3868 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 86% | 58,610 psi | 88% | 4088 fps | 99.7% |
| Alliant Reloder- TS 15.5 | <<locked>> | 90% | 59,364 psi | 89% | 3970 fps | 100% |
| Alliant Reloder-15 | <<locked>> | 88% | 59,625 psi | 89% | 3996 fps | 99.8% |
| Alliant Reloder-16 | <<locked>> | 96% | 56,565 psi | 85% | 4003 fps | 99.5% |
| Alliant Reloder-17 | <<locked>> | 92% | 58,668 psi | 88% | 4045 fps | 100% |
| Alliant Reloder-23ᴾ | <<locked>> | 100% | 47,152 psi | 71% | 3780 fps | 99.3% |
| Alliant Reloder-26ᴾ | <<locked>> | 100% | 55,622 psi | 83% | 4016 fps | 99.3% |
| Baschieri & Pellagri 107 | <<locked>> | 84% | 57,943 psi | 87% | 3947 fps | 99.4% |
| Bofors RP3 | <<locked>> | 88% | 56,478 psi | 85% | 3914 fps | 100% |
| Bofors RP7 | <<locked>> | 94% | 60,220 psi | 90% | 3947 fps | 97.3% |
| Hodgdon Benchmark | <<locked>> | 82% | 56,840 psi | 85% | 3868 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 84% | 60,249 psi | 90% | 3973 fps | 100% |
| Hodgdon H380 | <<locked>> | 88% | 57,363 psi | 86% | 3927 fps | 99% |
| Hodgdon H414 | <<locked>> | 94% | 58,508 psi | 88% | 3983 fps | 97.7% |
| Hodgdon H4350 | <<locked>> | 92% | 57,957 psi | 87% | 3937 fps | 96.2% |
| Hodgdon H4895 | <<locked>> | 84% | 57,769 psi | 87% | 3960 fps | 99.9% |
| Hodgdon Hybrid 100V | <<locked>> | 98% | 56,942 psi | 85% | 3907 fps | 100% |
| Hodgdon LEVERevolution | <<locked>> | 86% | 58,668 psi | 88% | 3990 fps | 100% |
| Hodgdon Superformance | <<locked>> | 92% | 55,738 psi | 84% | 3944 fps | 96.9% |
| Hodgdon TrailBossᴾ | <<locked>> | 100% | 35,288 psi | 53% | 2651 fps | 100% |
| Hodgdon VARGET | <<locked>> | 86% | 59,205 psi | 89% | 3963 fps | 100% |
| IMR 3031 | <<locked>> | 84% | 57,957 psi | 87% | 3953 fps | 100% |
| IMR 4064 | <<locked>> | 88% | 57,899 psi | 87% | 3924 fps | 99.7% |
| IMR 4166 Enduron | <<locked>> | 86% | 57,464 psi | 86% | 3888 fps | 97.3% |
| IMR 4350 | <<locked>> | 96% | 57,696 psi | 86% | 3898 fps | 97% |
| IMR 4451 Enduron | <<locked>> | 92% | 58,204 psi | 87% | 3917 fps | 97.4% |
| IMR 4831 | <<locked>> | 96% | 56,362 psi | 84% | 3911 fps | 99.3% |
| IMR 4895 | <<locked>> | 86% | 57,276 psi | 86% | 3970 fps | 99.8% |
| IMR 8208 XBR | <<locked>> | 84% | 59,509 psi | 89% | 3953 fps | 100% |
| Lovex D073.6 | <<locked>> | 84% | 57,609 psi | 86% | 3907 fps | 100% |
| Lovex S060 | <<locked>> | 86% | 59,553 psi | 89% | 3921 fps | 99.9% |
| Lovex S062 | <<locked>> | 88% | 57,856 psi | 87% | 3917 fps | 100% |
| Lovex S065 | <<locked>> | 94% | 57,943 psi | 87% | 3904 fps | 98.6% |
| Lovex S070 | <<locked>> | 96% | 59,640 psi | 89% | 3947 fps | 98% |
| Norma 201 | <<locked>> | 86% | 59,234 psi | 89% | 3940 fps | 100% |
| Norma 202 | <<locked>> | 86% | 60,176 psi | 90% | 3947 fps | 100% |
| Norma 203B | <<locked>> | 88% | 58,827 psi | 88% | 3976 fps | 99.9% |
| Norma 204 | <<locked>> | 96% | 59,292 psi | 89% | 3963 fps | 96% |
| Norma MRPᴾ | <<locked>> | 100% | 53,969 psi | 81% | 3950 fps | 96.8% |
| Norma URP | <<locked>> | 96% | 58,334 psi | 87% | 3980 fps | 99.4% |
| Ramshot Big Game | <<locked>> | 86% | 56,550 psi | 85% | 3927 fps | 99.7% |
| Ramshot Hunter | <<locked>> | 96% | 57,783 psi | 87% | 3967 fps | 98.3% |
| Ramshot TAC | <<locked>> | 82% | 56,478 psi | 85% | 3885 fps | 98.4% |
| Ramshot Wild Boar | <<locked>> | 82% | 56,362 psi | 84% | 3911 fps | 99.7% |
| ReloadSwiss RS 14ᴾ | <<locked>> | 100% | 35,752 psi | 54% | 2710 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 88% | 57,537 psi | 86% | 3901 fps | 97.9% |
| ReloadSwiss RS 52 | <<locked>> | 84% | 56,710 psi | 85% | 4012 fps | 99.5% |
| ReloadSwiss RS 60 | <<locked>> | 90% | 57,769 psi | 87% | 4049 fps | 100% |
| ReloadSwiss RS 62 | <<locked>> | 94% | 56,173 psi | 84% | 3937 fps | 99.1% |
| ReloadSwiss RS 70 | <<locked>> | 96% | 59,553 psi | 89% | 4058 fps | 99.5% |
| Rottweil R 901 | <<locked>> | 84% | 59,306 psi | 89% | 3927 fps | 100% |
| Rottweil R 902 | <<locked>> | 88% | 59,973 psi | 90% | 3940 fps | 100% |
| Rottweil R 903 | <<locked>> | 90% | 56,420 psi | 85% | 3904 fps | 99.9% |
| Rottweil R 907 | <<locked>> | 94% | 60,220 psi | 90% | 3947 fps | 97.3% |
| Shooters World Long Rifle | <<locked>> | 94% | 57,943 psi | 87% | 3904 fps | 98.6% |
| Shooters World Match Rifle | <<locked>> | 84% | 57,609 psi | 86% | 3907 fps | 100% |
| Shooters World Precision | <<locked>> | 88% | 57,856 psi | 87% | 3917 fps | 100% |
| Shooters World SW4350 | <<locked>> | 96% | 59,640 psi | 89% | 3947 fps | 98% |
| SNPE Vectan SP 11 | <<locked>> | 90% | 58,987 psi | 88% | 3980 fps | 99.9% |
| SNPE Vectan SP 7 | <<locked>> | 84% | 59,277 psi | 89% | 3930 fps | 99.1% |
| SNPE Vectan SP 9 | <<locked>> | 86% | 59,843 psi | 90% | 3967 fps | 99.9% |
| SNPE Vectan Tubal 3000 | <<locked>> | 86% | 60,162 psi | 90% | 3875 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 90% | 57,711 psi | 87% | 3796 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 94% | 58,349 psi | 87% | 3839 fps | 97.6% |
| Somchem S335 | <<locked>> | 86% | 59,857 psi | 90% | 3855 fps | 100% |
| Somchem S341 | <<locked>> | 84% | 58,987 psi | 88% | 3917 fps | 99.9% |
| Somchem S355 | <<locked>> | 90% | 56,536 psi | 85% | 3907 fps | 99.9% |
| Somchem S365 | <<locked>> | 98% | 57,682 psi | 86% | 3980 fps | 100% |
| Somchem S385ᴾ | <<locked>> | 100% | 56,681 psi | 85% | 3881 fps | 96.8% |
| Vihtavuori N130 | <<locked>> | 82% | 59,248 psi | 89% | 3832 fps | 100% |
| Vihtavuori N133 | <<locked>> | 84% | 56,782 psi | 85% | 3793 fps | 100% |
| Vihtavuori N135 | <<locked>> | 88% | 59,930 psi | 90% | 3898 fps | 100% |
| Vihtavuori N140 | <<locked>> | 86% | 57,159 psi | 86% | 3848 fps | 100% |
| Vihtavuori N150 | <<locked>> | 92% | 58,378 psi | 88% | 3875 fps | 100% |
| Vihtavuori N160 | <<locked>> | 94% | 56,826 psi | 85% | 3907 fps | 99.2% |
| Vihtavuori N530 | <<locked>> | 84% | 60,176 psi | 90% | 3950 fps | 100% |
| Vihtavuori N540 | <<locked>> | 88% | 59,712 psi | 90% | 3894 fps | 100% |
| Vihtavuori N550 | <<locked>> | 96% | 60,350 psi | 90% | 3976 fps | 99.5% |
| Vihtavuori N555ᴾ | <<locked>> | 100% | 52,649 psi | 79% | 3885 fps | 99.2% |
| Winchester 6.5 StaBALL | <<locked>> | 94% | 57,740 psi | 87% | 3862 fps | 100% |
| Winchester 748 | <<locked>> | 82% | 57,014 psi | 85% | 3934 fps | 100% |
| Winchester 760 | <<locked>> | 94% | 58,740 psi | 88% | 3990 fps | 97.7% |
| Winchester StaBALL HDᴾ | <<locked>> | 100% | 42,859 psi | 64% | 3796 fps | 99.6% |
| Winchester StaBALL Match | <<locked>> | 86% | 60,365 psi | 90% | 3973 fps | 100% |
Start Load - Barrel Length: 26"
| Powder | Charge | FR | MaxP | % | V(0) | z |
|---|---|---|---|---|---|---|
| Accurate 2015 | <<locked>> | 80% | 53,388 psi | 80% | 3770 fps | 100% |
| Accurate 2495 | <<locked>> | 80% | 46,224 psi | 69% | 3652 fps | 100% |
| Accurate 2520 | <<locked>> | 80% | 54,795 psi | 82% | 3852 fps | 100% |
| Accurate 2700 | <<locked>> | 84% | 52,388 psi | 79% | 3747 fps | 95.3% |
| Accurate 3100 | <<locked>> | 98% | 46,673 psi | 70% | 3665 fps | 96% |
| Accurate 4064 | <<locked>> | 80% | 43,700 psi | 66% | 3632 fps | 100% |
| Accurate 4350 | <<locked>> | 86% | 41,162 psi | 62% | 3599 fps | 95.8% |
| ADI APS 450 | <<locked>> | 80% | 57,856 psi | 87% | 3228 fps | 100% |
| ADI AR 2206H | <<locked>> | 80% | 49,792 psi | 75% | 3799 fps | 99% |
| ADI AR 2208 | <<locked>> | 80% | 42,090 psi | 63% | 3589 fps | 96.7% |
| ADI Benchmark 8208 | <<locked>> | 80% | 51,967 psi | 78% | 3812 fps | 99.8% |
| Alliant AR-Comp | <<locked>> | 80% | 52,939 psi | 79% | 3806 fps | 100% |
| Alliant Power Pro 2000-MR | <<locked>> | 80% | 46,630 psi | 70% | 3835 fps | 97.9% |
| Alliant Reloder- TS 15.5 | <<locked>> | 80% | 42,192 psi | 63% | 3612 fps | 98.2% |
| Alliant Reloder-15 | <<locked>> | 80% | 45,324 psi | 68% | 3704 fps | 97.7% |
| Alliant Reloder-16 | <<locked>> | 86% | 40,016 psi | 60% | 3615 fps | 95.7% |
| Alliant Reloder-17 | <<locked>> | 80% | 37,173 psi | 56% | 3553 fps | 96.5% |
| Alliant Reloder-23 | <<locked>> | 92% | 35,636 psi | 53% | 3474 fps | 96% |
| Alliant Reloder-26 | <<locked>> | 92% | 40,132 psi | 60% | 3648 fps | 95.3% |
| Baschieri & Pellagri 107 | <<locked>> | 80% | 50,111 psi | 75% | 3789 fps | 98.3% |
| Bofors RP3 | <<locked>> | 80% | 42,264 psi | 63% | 3612 fps | 98.3% |
| Bofors RP7 | <<locked>> | 90% | 52,620 psi | 79% | 3799 fps | 95.7% |
| Hodgdon Benchmark | <<locked>> | 80% | 53,272 psi | 80% | 3802 fps | 100% |
| Hodgdon BL-C2 | <<locked>> | 80% | 52,170 psi | 78% | 3829 fps | 100% |
| Hodgdon H380 | <<locked>> | 80% | 43,105 psi | 65% | 3619 fps | 95.9% |
| Hodgdon H414 | <<locked>> | 90% | 50,821 psi | 76% | 3832 fps | 95.9% |
| Hodgdon H4350 | <<locked>> | 90% | 54,215 psi | 81% | 3865 fps | 95.3% |
| Hodgdon H4895 | <<locked>> | 80% | 50,328 psi | 75% | 3816 fps | 99.4% |
| Hodgdon Hybrid 100V | <<locked>> | 84% | 34,534 psi | 52% | 3399 fps | 95.4% |
| Hodgdon LEVERevolution | <<locked>> | 80% | 47,108 psi | 71% | 3763 fps | 99.2% |
| Hodgdon Superformance | <<locked>> | 90% | 51,576 psi | 77% | 3855 fps | 95.9% |
| Hodgdon TrailBoss | <<locked>> | 80% | 26,194 psi | 39% | 2398 fps | 100% |
| Hodgdon VARGET | <<locked>> | 80% | 48,225 psi | 72% | 3747 fps | 99.1% |
| IMR 3031 | <<locked>> | 80% | 50,270 psi | 75% | 3816 fps | 100% |
| IMR 4064 | <<locked>> | 80% | 44,208 psi | 66% | 3638 fps | 97.5% |
| IMR 4166 Enduron | <<locked>> | 82% | 50,212 psi | 75% | 3740 fps | 95.6% |
| IMR 4350 | <<locked>> | 92% | 50,314 psi | 75% | 3750 fps | 95.1% |
| IMR 4451 Enduron | <<locked>> | 88% | 51,024 psi | 76% | 3770 fps | 95.7% |
| IMR 4831 | <<locked>> | 86% | 39,465 psi | 59% | 3533 fps | 95.4% |
| IMR 4895 | <<locked>> | 80% | 46,499 psi | 70% | 3743 fps | 98.4% |
| IMR 8208 XBR | <<locked>> | 80% | 51,967 psi | 78% | 3812 fps | 99.8% |
| Lovex D073.6 | <<locked>> | 80% | 49,806 psi | 75% | 3766 fps | 100% |
| Lovex S060 | <<locked>> | 80% | 49,066 psi | 74% | 3720 fps | 98.9% |
| Lovex S062 | <<locked>> | 80% | 44,237 psi | 66% | 3642 fps | 98.9% |
| Lovex S065 | <<locked>> | 86% | 44,498 psi | 67% | 3619 fps | 95.5% |
| Lovex S070 | <<locked>> | 90% | 48,733 psi | 73% | 3727 fps | 95.5% |
| Norma 201 | <<locked>> | 80% | 48,501 psi | 73% | 3737 fps | 99.5% |
| Norma 202 | <<locked>> | 80% | 49,110 psi | 74% | 3747 fps | 100% |
| Norma 203B | <<locked>> | 80% | 44,672 psi | 67% | 3684 fps | 98% |
| Norma 204 | <<locked>> | 94% | 55,085 psi | 83% | 3881 fps | 95% |
| Norma MRP | <<locked>> | 98% | 50,009 psi | 75% | 3865 fps | 95.8% |
| Norma URP | <<locked>> | 86% | 40,973 psi | 61% | 3599 fps | 95.7% |
| Ramshot Big Game | <<locked>> | 80% | 45,310 psi | 68% | 3698 fps | 98.1% |
| Ramshot Hunter | <<locked>> | 90% | 46,543 psi | 70% | 3730 fps | 95.7% |
| Ramshot TAC | <<locked>> | 80% | 52,634 psi | 79% | 3809 fps | 97.7% |
| Ramshot Wild Boar | <<locked>> | 80% | 52,417 psi | 79% | 3839 fps | 99.3% |
| ReloadSwiss RS 14 | <<locked>> | 80% | 26,426 psi | 40% | 2451 fps | 100% |
| ReloadSwiss RS 50 | <<locked>> | 82% | 46,528 psi | 70% | 3671 fps | 95.3% |
| ReloadSwiss RS 52 | <<locked>> | 80% | 48,878 psi | 73% | 3852 fps | 98.3% |
| ReloadSwiss RS 60 | <<locked>> | 80% | 39,624 psi | 59% | 3652 fps | 99.3% |
| ReloadSwiss RS 62 | <<locked>> | 86% | 41,466 psi | 62% | 3619 fps | 95.7% |
| ReloadSwiss RS 70 | <<locked>> | 88% | 43,947 psi | 66% | 3714 fps | 96.1% |
| Rottweil R 901 | <<locked>> | 80% | 52,228 psi | 78% | 3806 fps | 100% |
| Rottweil R 902 | <<locked>> | 80% | 46,035 psi | 69% | 3671 fps | 99.2% |
| Rottweil R 903 | <<locked>> | 80% | 39,595 psi | 59% | 3537 fps | 97.4% |
| Rottweil R 907 | <<locked>> | 90% | 52,620 psi | 79% | 3799 fps | 95.7% |
| Shooters World Long Rifle | <<locked>> | 86% | 44,498 psi | 67% | 3619 fps | 95.5% |
| Shooters World Match Rifle | <<locked>> | 80% | 49,806 psi | 75% | 3766 fps | 100% |
| Shooters World Precision | <<locked>> | 80% | 44,237 psi | 66% | 3642 fps | 98.9% |
| Shooters World SW4350 | <<locked>> | 90% | 48,733 psi | 73% | 3727 fps | 95.5% |
| SNPE Vectan SP 11 | <<locked>> | 80% | 41,162 psi | 62% | 3602 fps | 97.1% |
| SNPE Vectan SP 7 | <<locked>> | 80% | 51,053 psi | 77% | 3776 fps | 97.9% |
| SNPE Vectan SP 9 | <<locked>> | 80% | 48,617 psi | 73% | 3750 fps | 98.8% |
| SNPE Vectan Tubal 3000 | <<locked>> | 80% | 49,443 psi | 74% | 3688 fps | 100% |
| SNPE Vectan Tubal 5000 | <<locked>> | 80% | 41,481 psi | 62% | 3494 fps | 100% |
| SNPE Vectan Tubal 7000 | <<locked>> | 88% | 47,326 psi | 71% | 3619 fps | 95% |
| Somchem S335 | <<locked>> | 80% | 49,327 psi | 74% | 3675 fps | 100% |
| Somchem S341 | <<locked>> | 80% | 50,952 psi | 76% | 3766 fps | 99.2% |
| Somchem S355 | <<locked>> | 80% | 40,219 psi | 60% | 3547 fps | 97.3% |
| Somchem S365 | <<locked>> | 82% | 31,778 psi | 48% | 3366 fps | 95.6% |
| Somchem S385 | <<locked>> | 98% | 52,866 psi | 79% | 3806 fps | 95.9% |
| Vihtavuori N130 | <<locked>> | 80% | 55,622 psi | 83% | 3773 fps | 100% |
| Vihtavuori N133 | <<locked>> | 80% | 49,922 psi | 75% | 3678 fps | 100% |
| Vihtavuori N135 | <<locked>> | 80% | 45,832 psi | 69% | 3655 fps | 100% |
| Vihtavuori N140 | <<locked>> | 80% | 46,659 psi | 70% | 3658 fps | 100% |
| Vihtavuori N150 | <<locked>> | 80% | 38,435 psi | 58% | 3461 fps | 98.2% |
| Vihtavuori N160 | <<locked>> | 84% | 39,798 psi | 60% | 3530 fps | 95.2% |
| Vihtavuori N530 | <<locked>> | 80% | 52,315 psi | 78% | 3809 fps | 99.8% |
| Vihtavuori N540 | <<locked>> | 80% | 45,339 psi | 68% | 3632 fps | 100% |
| Vihtavuori N550 | <<locked>> | 86% | 42,337 psi | 63% | 3602 fps | 96% |
| Vihtavuori N555 | <<locked>> | 92% | 39,436 psi | 59% | 3579 fps | 96% |
| Winchester 6.5 StaBALL | <<locked>> | 80% | 34,432 psi | 52% | 3337 fps | 95.9% |
| Winchester 748 | <<locked>> | 80% | 53,069 psi | 80% | 3865 fps | 100% |
| Winchester 760 | <<locked>> | 90% | 50,966 psi | 76% | 3832 fps | 95.9% |
| Winchester StaBALL HD | <<locked>> | 94% | 34,316 psi | 51% | 3510 fps | 96.4% |
| Winchester StaBALL Match | <<locked>> | 80% | 48,544 psi | 73% | 3750 fps | 99.2% |
ᴾ possible press load - work up slowly to this load while watching for signs of excessive pressure.
This overview compares 118 powders for 7.82 Warbird loaded with the .308 | 88gr | Inceptor SRR. Alliant Power Pro 2000-MR delivers the highest muzzle velocity at 4,088 fps; across all powders the maximum-charge window runs from 2,651 fps to 4,088 fps. Accurate 3100 gives the best case fill at 100 %, and 118 of the 118 powders fall inside the usable 80–100 % fill window.
Relative to the caliber's maximum pressure (460 MPa), the top charges use 53–90 %, leaving at least 10 % headroom. The 88.0 gr projectile in 0.308" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, Accurate MAGPRO 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. As outliers, Accurate High Country, Accurate MAGPRO, ADI AR 2213 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.