Load Specifications

Bullet:.284 | 133gr | CutEdge ESP Raptor

Bullet Manufacturer:Cutting Edge

Bullet Weight:133 gr

Bullet Diameter:0.284"

Bullet Length:<<locked>>

Caliber:7 mm Backcountry load data

Case Length (l3):2.417"

Cartridge Length (C.O.L.):<<locked>>

Case Capacity:73 Grains of Water

Primer Size:Large Rifle (LR)

Barrel Length:20"

Max. allowed Pressure:79,916 psi

Recommended Twist Rate:1:8.0

Load data in caliber 7 mm Backcountry with .284 | 133gr | CutEdge ESP Raptor bullet and 121 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?

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Min Fill Rate (80%)

Min Burn Rate (95%)

% of allowable P. (90%)

Max Load - Barrel Length: 20"

Powder	Charge	FR	MaxP	%	V(0)	z
Accurate 1680	<<locked>>	82%	72,127 psi	90%	2910 fps	100%
Accurate 2015	<<locked>>	92%	71,243 psi	89%	2963 fps	100%
Accurate 2200	<<locked>>	84%	71,330 psi	89%	3100 fps	100%
Accurate 2230	<<locked>>	82%	69,763 psi	87%	3064 fps	100%
Accurate 2460	<<locked>>	88%	70,546 psi	88%	3005 fps	100%
Accurate 2495	<<locked>>	96%	70,561 psi	88%	2986 fps	100%
Accurate 2520	<<locked>>	90%	69,372 psi	87%	3025 fps	100%
Accurate 2700	<<locked>>	96%	70,155 psi	88%	3015 fps	98.1%
Accurate 4064	<<locked>>	98%	69,995 psi	88%	3031 fps	100%
Accurate 4350ᴾ	<<locked>>	100%	58,595 psi	73%	2969 fps	99.2%
Accurate LT-30	<<locked>>	86%	68,835 psi	86%	2907 fps	100%
Accurate LT-32	<<locked>>	86%	69,401 psi	87%	2936 fps	100%
ADI APS 450	<<locked>>	92%	70,488 psi	88%	2356 fps	100%
ADI AR 2206H	<<locked>>	94%	70,880 psi	89%	3084 fps	100%
ADI AR 2207	<<locked>>	84%	71,214 psi	89%	2910 fps	100%
ADI AR 2208ᴾ	<<locked>>	100%	71,663 psi	90%	3074 fps	100%
ADI AR 2219	<<locked>>	84%	68,255 psi	85%	2995 fps	100%
ADI Benchmark 8208	<<locked>>	92%	69,372 psi	87%	3028 fps	100%
Alliant AR-Comp	<<locked>>	92%	71,388 psi	89%	2995 fps	100%
Alliant Power Pro 1200-R	<<locked>>	86%	68,240 psi	85%	3100 fps	100%
Alliant Power Pro 2000-MR	<<locked>>	94%	67,950 psi	85%	3169 fps	100%
Alliant Reloder- TS 15.5ᴾ	<<locked>>	100%	72,287 psi	90%	3100 fps	100%
Alliant Reloder-10x	<<locked>>	88%	70,198 psi	88%	2966 fps	100%
Alliant Reloder-15	<<locked>>	96%	68,646 psi	86%	3074 fps	100%
Alliant Reloder-16ᴾ	<<locked>>	100%	55,883 psi	70%	2969 fps	99.3%
Alliant Reloder-17ᴾ	<<locked>>	100%	66,137 psi	83%	3127 fps	100%
Alliant Reloder-23ᴾ	<<locked>>	100%	39,885 psi	50%	2677 fps	97.3%
Alliant Reloder-26ᴾ	<<locked>>	100%	44,657 psi	56%	2835 fps	96.3%
Alliant Reloder-7	<<locked>>	84%	72,171 psi	90%	2936 fps	100%
Baschieri & Pellagri 106	<<locked>>	86%	68,951 psi	86%	2904 fps	100%
Baschieri & Pellagri 107	<<locked>>	94%	72,098 psi	90%	3114 fps	100%
Bofors RP3	<<locked>>	98%	69,676 psi	87%	3068 fps	100%
Bofors RP7ᴾ	<<locked>>	100%	64,730 psi	81%	2986 fps	97.6%
Hodgdon Benchmark	<<locked>>	92%	70,938 psi	89%	3005 fps	100%
Hodgdon BL-C2	<<locked>>	92%	70,155 psi	88%	3068 fps	100%
Hodgdon CFE223	<<locked>>	88%	68,734 psi	86%	3127 fps	100%
Hodgdon H322	<<locked>>	88%	70,982 psi	89%	3025 fps	100%
Hodgdon H335	<<locked>>	86%	68,269 psi	85%	3005 fps	100%
Hodgdon H380	<<locked>>	98%	70,779 psi	89%	3091 fps	99.8%
Hodgdon H414ᴾ	<<locked>>	100%	61,743 psi	77%	3022 fps	97.7%
Hodgdon H4198	<<locked>>	84%	71,286 psi	89%	2959 fps	100%
Hodgdon H4350ᴾ	<<locked>>	100%	66,529 psi	83%	3048 fps	97.2%
Hodgdon H4895	<<locked>>	94%	71,692 psi	90%	3094 fps	100%
Hodgdon Hybrid 100Vᴾ	<<locked>>	100%	52,025 psi	65%	2841 fps	99.5%
Hodgdon LEVERevolution	<<locked>>	94%	67,718 psi	85%	3077 fps	100%
Hodgdon Superformanceᴾ	<<locked>>	100%	63,556 psi	80%	3071 fps	97.6%
Hodgdon TrailBossᴾ	<<locked>>	100%	35,360 psi	44%	1778 fps	100%
Hodgdon VARGET	<<locked>>	94%	68,893 psi	86%	3041 fps	100%
IMR 3031	<<locked>>	94%	71,881 psi	90%	3064 fps	100%
IMR 4064	<<locked>>	98%	71,286 psi	89%	3061 fps	100%
IMR 4166 Enduron	<<locked>>	96%	71,750 psi	90%	3054 fps	98.9%
IMR 4198	<<locked>>	88%	69,792 psi	87%	2920 fps	100%
IMR 4350ᴾ	<<locked>>	100%	57,305 psi	72%	2897 fps	96.3%
IMR 4451 Enduronᴾ	<<locked>>	100%	66,587 psi	83%	3015 fps	98.2%
IMR 4831ᴾ	<<locked>>	100%	55,390 psi	69%	2904 fps	98.9%
IMR 4895	<<locked>>	96%	70,430 psi	88%	3104 fps	100%
IMR 8208 XBR	<<locked>>	92%	69,372 psi	87%	3028 fps	100%
Lovex D073.4	<<locked>>	82%	70,010 psi	88%	3018 fps	100%
Lovex D073.5	<<locked>>	88%	70,996 psi	89%	3022 fps	100%
Lovex D073.6	<<locked>>	94%	71,678 psi	90%	3058 fps	100%
Lovex S053	<<locked>>	82%	71,649 psi	90%	2835 fps	100%
Lovex S060	<<locked>>	94%	69,488 psi	87%	3005 fps	100%
Lovex S062	<<locked>>	98%	70,750 psi	89%	3048 fps	100%
Lovex S065ᴾ	<<locked>>	100%	61,975 psi	78%	2949 fps	98.7%
Lovex S070ᴾ	<<locked>>	100%	59,321 psi	74%	2930 fps	97.5%
Norma 200	<<locked>>	84%	70,155 psi	88%	2940 fps	100%
Norma 201	<<locked>>	94%	68,893 psi	86%	3022 fps	100%
Norma 202	<<locked>>	94%	69,879 psi	87%	3022 fps	100%
Norma 203B	<<locked>>	98%	72,287 psi	90%	3114 fps	100%
Norma URPᴾ	<<locked>>	100%	57,435 psi	72%	2953 fps	99.1%
Ramshot Big Game	<<locked>>	96%	69,720 psi	87%	3094 fps	100%
Ramshot Hunterᴾ	<<locked>>	100%	56,333 psi	70%	2946 fps	97.6%
Ramshot TAC	<<locked>>	92%	70,895 psi	89%	3068 fps	99.6%
Ramshot Wild Boar	<<locked>>	92%	70,387 psi	88%	3077 fps	100%
Ramshot X-Terminator	<<locked>>	90%	71,344 psi	89%	3041 fps	100%
ReloadSwiss RS 14ᴾ	<<locked>>	100%	35,868 psi	45%	1821 fps	100%
ReloadSwiss RS 40	<<locked>>	88%	69,082 psi	86%	3012 fps	100%
ReloadSwiss RS 50	<<locked>>	98%	70,822 psi	89%	3071 fps	99.2%
ReloadSwiss RS 52	<<locked>>	94%	70,648 psi	88%	3156 fps	100%
ReloadSwiss RS 60ᴾ	<<locked>>	100%	70,561 psi	88%	3186 fps	100%
ReloadSwiss RS 62ᴾ	<<locked>>	100%	58,566 psi	73%	2992 fps	99.1%
ReloadSwiss RS 70ᴾ	<<locked>>	100%	58,131 psi	73%	3018 fps	98.8%
Rottweil R 901	<<locked>>	92%	69,198 psi	87%	2995 fps	100%
Rottweil R 902	<<locked>>	96%	69,125 psi	86%	3015 fps	100%
Rottweil R 903ᴾ	<<locked>>	100%	69,082 psi	86%	3058 fps	100%
Rottweil R 907ᴾ	<<locked>>	100%	64,730 psi	81%	2986 fps	97.6%
Shooters World AR Plus	<<locked>>	82%	70,010 psi	88%	3018 fps	100%
Shooters World Long Rifleᴾ	<<locked>>	100%	61,975 psi	78%	2949 fps	98.7%
Shooters World Match Rifle	<<locked>>	94%	71,678 psi	90%	3058 fps	100%
Shooters World Precision	<<locked>>	98%	70,750 psi	89%	3048 fps	100%
Shooters World SW4350ᴾ	<<locked>>	100%	59,321 psi	74%	2930 fps	97.5%
Shooters World Tactical Rifle	<<locked>>	86%	69,328 psi	87%	2995 fps	100%
SNPE Vectan BA6 1/2	<<locked>>	86%	69,589 psi	87%	2657 fps	100%
SNPE Vectan SP 10	<<locked>>	84%	68,269 psi	85%	3002 fps	100%
SNPE Vectan SP 11ᴾ	<<locked>>	100%	71,794 psi	90%	3123 fps	100%
SNPE Vectan SP 3	<<locked>>	88%	72,185 psi	90%	3002 fps	100%
SNPE Vectan SP 7	<<locked>>	92%	69,575 psi	87%	3045 fps	99.7%
SNPE Vectan SP 9	<<locked>>	94%	69,140 psi	87%	3054 fps	100%
SNPE Vectan Tubal 3000	<<locked>>	94%	70,590 psi	88%	2956 fps	100%
SNPE Vectan Tubal 5000ᴾ	<<locked>>	100%	71,243 psi	89%	2946 fps	100%
SNPE Vectan Tubal 7000ᴾ	<<locked>>	100%	62,990 psi	79%	2913 fps	97.8%
Somchem S321	<<locked>>	90%	72,272 psi	90%	3071 fps	100%
Somchem S335	<<locked>>	94%	69,517 psi	87%	2946 fps	100%
Somchem S341	<<locked>>	92%	69,038 psi	86%	3031 fps	100%
Somchem S355ᴾ	<<locked>>	100%	68,835 psi	86%	3051 fps	100%
Somchem S365ᴾ	<<locked>>	100%	51,706 psi	65%	2900 fps	100%
Vihtavuori N120	<<locked>>	84%	70,634 psi	88%	2851 fps	100%
Vihtavuori N130	<<locked>>	90%	69,546 psi	87%	2910 fps	100%
Vihtavuori N133	<<locked>>	94%	70,532 psi	88%	2933 fps	100%
Vihtavuori N135	<<locked>>	96%	69,241 psi	87%	2972 fps	100%
Vihtavuori N140	<<locked>>	96%	70,590 psi	88%	2992 fps	100%
Vihtavuori N150ᴾ	<<locked>>	100%	66,834 psi	84%	2979 fps	100%
Vihtavuori N160ᴾ	<<locked>>	100%	60,205 psi	75%	2953 fps	99.3%
Vihtavuori N530	<<locked>>	92%	70,895 psi	89%	3038 fps	100%
Vihtavuori N540	<<locked>>	96%	68,545 psi	86%	2989 fps	100%
Vihtavuori N550ᴾ	<<locked>>	100%	59,219 psi	74%	2956 fps	99.1%
Vihtavuori N555ᴾ	<<locked>>	100%	43,845 psi	55%	2756 fps	97.3%
Winchester 6.5 StaBALLᴾ	<<locked>>	100%	60,901 psi	76%	2936 fps	100%
Winchester 748	<<locked>>	92%	71,504 psi	89%	3087 fps	100%
Winchester 760ᴾ	<<locked>>	100%	62,105 psi	78%	3025 fps	97.8%
Winchester StaBALL Match	<<locked>>	94%	69,850 psi	87%	3064 fps	100%

Start Load - Barrel Length: 20"

Powder	Charge	FR	MaxP	%	V(0)	z
Accurate 1680	<<locked>>	80%	67,588 psi	85%	2861 fps	100%
Accurate 2015	<<locked>>	80%	49,052 psi	61%	2677 fps	100%
Accurate 2200	<<locked>>	80%	62,584 psi	78%	2982 fps	99.7%
Accurate 2230	<<locked>>	80%	64,745 psi	81%	3002 fps	99.9%
Accurate 2460	<<locked>>	80%	53,911 psi	67%	2792 fps	100%
Accurate 2495	<<locked>>	80%	41,394 psi	52%	2582 fps	100%
Accurate 2520	<<locked>>	80%	49,037 psi	61%	2746 fps	100%
Accurate 2700	<<locked>>	88%	53,737 psi	67%	2782 fps	95.3%
Accurate 4064	<<locked>>	80%	39,160 psi	49%	2569 fps	99.7%
Accurate 4350	<<locked>>	90%	41,147 psi	51%	2664 fps	95.8%
Accurate LT-30	<<locked>>	80%	57,421 psi	72%	2762 fps	100%
Accurate LT-32	<<locked>>	80%	57,870 psi	72%	2792 fps	100%
ADI APS 450	<<locked>>	80%	57,957 psi	73%	2195 fps	100%
ADI AR 2206H	<<locked>>	80%	45,339 psi	57%	2694 fps	98.2%
ADI AR 2207	<<locked>>	80%	63,353 psi	79%	2822 fps	100%
ADI AR 2208	<<locked>>	80%	38,421 psi	48%	2533 fps	95.6%
ADI AR 2219	<<locked>>	80%	59,582 psi	75%	2887 fps	100%
ADI Benchmark 8208	<<locked>>	80%	47,500 psi	59%	2710 fps	99.4%
Alliant AR-Comp	<<locked>>	80%	47,964 psi	60%	2703 fps	100%
Alliant Power Pro 1200-R	<<locked>>	80%	55,840 psi	70%	2923 fps	99.8%
Alliant Power Pro 2000-MR	<<locked>>	80%	41,379 psi	52%	2713 fps	96.2%
Alliant Reloder- TS 15.5	<<locked>>	80%	38,261 psi	48%	2556 fps	97.3%
Alliant Reloder-10x	<<locked>>	80%	55,129 psi	69%	2776 fps	100%
Alliant Reloder-15	<<locked>>	80%	41,002 psi	51%	2621 fps	96.6%
Alliant Reloder-16	<<locked>>	90%	40,669 psi	51%	2674 fps	95.8%
Alliant Reloder-17	<<locked>>	82%	35,346 psi	44%	2569 fps	95.6%
Alliant Reloder-23	<<locked>>	96%	34,983 psi	44%	2556 fps	95.3%
Alliant Reloder-26	<<locked>>	98%	41,582 psi	52%	2762 fps	95.1%
Alliant Reloder-7	<<locked>>	80%	63,991 psi	80%	2844 fps	100%
Baschieri & Pellagri 106	<<locked>>	80%	57,000 psi	71%	2759 fps	100%
Baschieri & Pellagri 107	<<locked>>	80%	44,715 psi	56%	2694 fps	97%
Bofors RP3	<<locked>>	80%	37,710 psi	47%	2552 fps	97.2%
Bofors RP7	<<locked>>	94%	53,476 psi	67%	2812 fps	95.5%
Hodgdon Benchmark	<<locked>>	80%	49,182 psi	62%	2703 fps	99.8%
Hodgdon BL-C2	<<locked>>	80%	46,427 psi	58%	2723 fps	99.5%
Hodgdon CFE223	<<locked>>	80%	51,750 psi	65%	2877 fps	98.9%
Hodgdon H322	<<locked>>	80%	54,665 psi	68%	2818 fps	100%
Hodgdon H335	<<locked>>	80%	55,724 psi	70%	2841 fps	100%
Hodgdon H380	<<locked>>	82%	41,365 psi	52%	2621 fps	95.3%
Hodgdon H414	<<locked>>	94%	50,517 psi	63%	2841 fps	95.4%
Hodgdon H4198	<<locked>>	80%	63,135 psi	79%	2864 fps	100%
Hodgdon H4350	<<locked>>	96%	58,218 psi	73%	2927 fps	95.7%
Hodgdon H4895	<<locked>>	80%	45,788 psi	57%	2707 fps	98.7%
Hodgdon Hybrid 100V	<<locked>>	88%	35,128 psi	44%	2510 fps	95.7%
Hodgdon LEVERevolution	<<locked>>	80%	42,047 psi	53%	2674 fps	98.3%
Hodgdon Superformance	<<locked>>	96%	54,607 psi	68%	2936 fps	95.9%
Hodgdon TrailBoss	<<locked>>	80%	26,208 psi	33%	1585 fps	100%
Hodgdon VARGET	<<locked>>	80%	44,106 psi	55%	2661 fps	98.4%
IMR 3031	<<locked>>	80%	45,440 psi	57%	2707 fps	100%
IMR 4064	<<locked>>	80%	40,321 psi	50%	2572 fps	96.6%
IMR 4166 Enduron	<<locked>>	84%	48,936 psi	61%	2713 fps	95%
IMR 4198	<<locked>>	80%	55,100 psi	69%	2740 fps	100%
IMR 4350	<<locked>>	98%	53,911 psi	67%	2841 fps	95.6%
IMR 4451 Enduron	<<locked>>	92%	52,112 psi	65%	2795 fps	95.7%
IMR 4831	<<locked>>	90%	39,465 psi	49%	2612 fps	95.3%
IMR 4895	<<locked>>	80%	42,003 psi	53%	2651 fps	97.5%
IMR 8208 XBR	<<locked>>	80%	47,500 psi	59%	2710 fps	99.4%
Lovex D073.4	<<locked>>	80%	65,354 psi	82%	2963 fps	100%
Lovex D073.5	<<locked>>	80%	53,969 psi	68%	2802 fps	100%
Lovex D073.6	<<locked>>	80%	44,512 psi	56%	2674 fps	99.8%
Lovex S053	<<locked>>	80%	67,515 psi	84%	2789 fps	100%
Lovex S060	<<locked>>	80%	45,194 psi	57%	2635 fps	98.3%
Lovex S062	<<locked>>	80%	40,161 psi	50%	2575 fps	98.2%
Lovex S065	<<locked>>	90%	45,194 psi	57%	2674 fps	95.5%
Lovex S070	<<locked>>	94%	49,037 psi	61%	2762 fps	95.3%
Norma 200	<<locked>>	80%	61,830 psi	77%	2841 fps	100%
Norma 201	<<locked>>	80%	44,222 psi	55%	2648 fps	99%
Norma 202	<<locked>>	80%	44,846 psi	56%	2661 fps	100%
Norma 203B	<<locked>>	80%	40,350 psi	50%	2608 fps	97%
Norma URP	<<locked>>	90%	41,147 psi	51%	2661 fps	95.6%
Ramshot Big Game	<<locked>>	80%	40,074 psi	50%	2618 fps	96.7%
Ramshot Hunter	<<locked>>	94%	45,890 psi	57%	2762 fps	95.1%
Ramshot TAC	<<locked>>	80%	47,442 psi	59%	2710 fps	96.4%
Ramshot Wild Boar	<<locked>>	80%	47,181 psi	59%	2733 fps	98.5%
Ramshot X-Terminator	<<locked>>	80%	51,271 psi	64%	2759 fps	99.1%
ReloadSwiss RS 14	<<locked>>	80%	26,527 psi	33%	1624 fps	100%
ReloadSwiss RS 40	<<locked>>	80%	53,272 psi	67%	2799 fps	100%
ReloadSwiss RS 50	<<locked>>	86%	47,906 psi	60%	2726 fps	95.4%
ReloadSwiss RS 52	<<locked>>	80%	43,424 psi	54%	2726 fps	97.1%
ReloadSwiss RS 60	<<locked>>	80%	35,186 psi	44%	2579 fps	98.1%
ReloadSwiss RS 62	<<locked>>	90%	40,843 psi	51%	2677 fps	95.2%
ReloadSwiss RS 70	<<locked>>	92%	43,903 psi	55%	2756 fps	95.5%
Rottweil R 901	<<locked>>	80%	48,066 psi	60%	2694 fps	100%
Rottweil R 902	<<locked>>	80%	41,945 psi	52%	2595 fps	98.6%
Rottweil R 903	<<locked>>	80%	35,404 psi	44%	2497 fps	96.1%
Rottweil R 907	<<locked>>	94%	53,476 psi	67%	2812 fps	95.5%
Shooters World AR Plus	<<locked>>	80%	65,354 psi	82%	2963 fps	100%
Shooters World Long Rifle	<<locked>>	90%	45,194 psi	57%	2674 fps	95.5%
Shooters World Match Rifle	<<locked>>	80%	44,512 psi	56%	2674 fps	99.8%
Shooters World Precision	<<locked>>	80%	40,161 psi	50%	2575 fps	98.2%
Shooters World SW4350	<<locked>>	94%	49,037 psi	61%	2762 fps	95.3%
Shooters World Tactical Rifle	<<locked>>	80%	56,376 psi	71%	2822 fps	99.9%
SNPE Vectan BA6 1/2	<<locked>>	80%	59,611 psi	75%	2546 fps	100%
SNPE Vectan SP 10	<<locked>>	80%	59,973 psi	75%	2900 fps	100%
SNPE Vectan SP 11	<<locked>>	80%	36,593 psi	46%	2546 fps	95.5%
SNPE Vectan SP 3	<<locked>>	80%	56,246 psi	70%	2805 fps	100%
SNPE Vectan SP 7	<<locked>>	80%	45,803 psi	57%	2684 fps	96.5%
SNPE Vectan SP 9	<<locked>>	80%	43,888 psi	55%	2661 fps	97.9%
SNPE Vectan Tubal 3000	<<locked>>	80%	45,687 psi	57%	2612 fps	100%
SNPE Vectan Tubal 5000	<<locked>>	80%	38,029 psi	48%	2470 fps	99.8%
SNPE Vectan Tubal 7000	<<locked>>	94%	51,474 psi	64%	2740 fps	95.7%
Somchem S321	<<locked>>	80%	51,474 psi	64%	2789 fps	99.8%
Somchem S335	<<locked>>	80%	45,252 psi	57%	2612 fps	100%
Somchem S341	<<locked>>	80%	45,513 psi	57%	2680 fps	98.2%
Somchem S355	<<locked>>	80%	36,274 psi	45%	2503 fps	96.2%
Somchem S365	<<locked>>	86%	32,097 psi	40%	2487 fps	96%
Vihtavuori N120	<<locked>>	80%	62,961 psi	79%	2769 fps	100%
Vihtavuori N130	<<locked>>	80%	51,605 psi	65%	2680 fps	100%
Vihtavuori N133	<<locked>>	80%	46,108 psi	58%	2608 fps	100%
Vihtavuori N135	<<locked>>	80%	41,713 psi	52%	2589 fps	100%
Vihtavuori N140	<<locked>>	80%	42,366 psi	53%	2595 fps	99.9%
Vihtavuori N150	<<locked>>	80%	34,548 psi	43%	2444 fps	97.2%
Vihtavuori N160	<<locked>>	88%	40,277 psi	50%	2612 fps	95.3%
Vihtavuori N530	<<locked>>	80%	47,630 psi	60%	2707 fps	99.4%
Vihtavuori N540	<<locked>>	80%	40,785 psi	51%	2575 fps	99.6%
Vihtavuori N550	<<locked>>	90%	42,409 psi	53%	2667 fps	95.8%
Vihtavuori N555	<<locked>>	96%	38,145 psi	48%	2638 fps	95.4%
Winchester 6.5 StaBALL	<<locked>>	84%	35,114 psi	44%	2477 fps	95.9%
Winchester 748	<<locked>>	80%	47,616 psi	60%	2753 fps	99.8%
Winchester 760	<<locked>>	94%	50,517 psi	63%	2841 fps	95.4%
Winchester StaBALL Match	<<locked>>	80%	43,453 psi	54%	2664 fps	98.3%

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

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This overview compares 121 powders for 7 mm Backcountry loaded with the .284 | 133gr | CutEdge ESP Raptor. ReloadSwiss RS 60 delivers the highest muzzle velocity at 3,186 fps; across all powders the maximum-charge window runs from 1,778 fps to 3,186 fps. Accurate 4350 gives the best case fill at 100 %, and 121 of the 121 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (551 MPa), the top charges use 44–90 %, leaving at least 10 % headroom. The 133.0 gr projectile in 0.284" calls for a 1:8.0 twist; slower twists will usually not stabilise this weight. Accurate 4350, ADI AR 2208, Alliant Reloder- TS 15.5 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. Always begin at the start load and work up in small increments while checking case and primer for pressure signs.

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Load data for 7 mm Backcountry + .284 | 133gr | CutEdge ESP Raptor

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