Load Specifications

Bullet:.284 | 160gr | Prvi Partizan PSP BT

Bullet Manufacturer:Prvi Partizan

Bullet Weight:160 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:1:11.5

Load data in caliber 7 mm Backcountry with .284 | 160gr | Prvi Partizan PSP BT bullet and 133 powders. The key underlying parameters are shown in the table above. The recommended powders for this cartridge and bullet combination are ReloadSwiss RS 70, Winchester 760 and ReloadSwiss RS 60.

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 2015	<<locked>>	86%	72,200 psi	90%	2726 fps	100%
Accurate 2460	<<locked>>	82%	71,141 psi	89%	2769 fps	100%
Accurate 2495	<<locked>>	88%	68,980 psi	86%	2720 fps	100%
Accurate 2520	<<locked>>	84%	70,793 psi	89%	2795 fps	100%
Accurate 2700	<<locked>>	90%	70,750 psi	89%	2815 fps	99.7%
Accurate 3100ᴾ	<<locked>>	100%	56,492 psi	71%	2694 fps	99.4%
Accurate 4064	<<locked>>	90%	69,067 psi	86%	2772 fps	100%
Accurate 4350	<<locked>>	98%	71,968 psi	90%	2900 fps	100%
Accurate High Countryᴾ	<<locked>>	100%	62,004 psi	78%	2884 fps	97.7%
Accurate LT-30	<<locked>>	82%	71,808 psi	90%	2703 fps	100%
ADI APS 450	<<locked>>	92%	71,257 psi	89%	2205 fps	100%
ADI AR 2206H	<<locked>>	88%	71,750 psi	90%	2854 fps	100%
ADI AR 2208	<<locked>>	92%	68,559 psi	86%	2808 fps	100%
ADI AR 2209ᴾ	<<locked>>	100%	63,585 psi	80%	2838 fps	98.7%
ADI AR 2213ᴾ	<<locked>>	100%	57,087 psi	71%	2776 fps	96.4%
ADI Benchmark 8208	<<locked>>	86%	69,995 psi	88%	2799 fps	100%
Alliant AR-Comp	<<locked>>	84%	68,850 psi	86%	2713 fps	100%
Alliant Power Pro 2000-MR	<<locked>>	88%	70,285 psi	88%	2949 fps	100%
Alliant Power Pro Varmintᴾ	<<locked>>	100%	63,469 psi	79%	2831 fps	98.7%
Alliant Power Pro Varmintᴾ	<<locked>>	100%	63,469 psi	79%	2831 fps	98.7%
Alliant Reloder- TS 15.5	<<locked>>	92%	70,169 psi	88%	2831 fps	100%
Alliant Reloder-10x	<<locked>>	82%	70,808 psi	89%	2720 fps	100%
Alliant Reloder-15	<<locked>>	90%	70,343 psi	88%	2854 fps	100%
Alliant Reloder-16ᴾ	<<locked>>	100%	71,736 psi	90%	2943 fps	100%
Alliant Reloder-17	<<locked>>	94%	69,908 psi	87%	2920 fps	100%
Alliant Reloder-19ᴾ	<<locked>>	100%	62,511 psi	78%	2818 fps	98.6%
Alliant Reloder-22ᴾ	<<locked>>	100%	56,173 psi	70%	2766 fps	97.7%
Alliant Reloder-23ᴾ	<<locked>>	100%	53,200 psi	67%	2707 fps	100%
Alliant Reloder-25ᴾ	<<locked>>	100%	46,151 psi	58%	2631 fps	98.7%
Alliant Reloder-26ᴾ	<<locked>>	100%	61,641 psi	77%	2897 fps	100%
Baschieri & Pellagri 106	<<locked>>	82%	72,272 psi	90%	2703 fps	100%
Baschieri & Pellagri 107	<<locked>>	86%	68,327 psi	85%	2835 fps	100%
Bofors RP15ᴾ	<<locked>>	100%	51,343 psi	64%	2690 fps	96.6%
Bofors RP3	<<locked>>	92%	72,171 psi	90%	2854 fps	100%
Bofors RP5ᴾ	<<locked>>	100%	56,173 psi	70%	2766 fps	97.7%
Bofors RP7	<<locked>>	96%	70,111 psi	88%	2841 fps	99.7%
Hodgdon Benchmark	<<locked>>	86%	70,822 psi	89%	2769 fps	100%
Hodgdon BL-C2	<<locked>>	86%	71,127 psi	89%	2835 fps	100%
Hodgdon CFE223	<<locked>>	82%	70,213 psi	88%	2900 fps	100%
Hodgdon H322	<<locked>>	82%	71,069 psi	89%	2779 fps	100%
Hodgdon H380	<<locked>>	90%	68,139 psi	85%	2828 fps	100%
Hodgdon H414	<<locked>>	96%	69,241 psi	87%	2897 fps	99.9%
Hodgdon H4350	<<locked>>	94%	68,124 psi	85%	2854 fps	99.3%
Hodgdon H4831ᴾ	<<locked>>	100%	61,279 psi	77%	2782 fps	96.6%
Hodgdon H4831 SCᴾ	<<locked>>	100%	59,988 psi	75%	2762 fps	96.4%
Hodgdon H4895	<<locked>>	86%	68,429 psi	86%	2815 fps	100%
Hodgdon Hybrid 100Vᴾ	<<locked>>	100%	67,718 psi	85%	2815 fps	100%
Hodgdon LEVERevolution	<<locked>>	88%	69,633 psi	87%	2854 fps	100%
Hodgdon Superformance	<<locked>>	96%	71,562 psi	90%	2953 fps	99.9%
Hodgdon TrailBossᴾ	<<locked>>	100%	36,695 psi	46%	1663 fps	100%
Hodgdon VARGET	<<locked>>	88%	69,386 psi	87%	2812 fps	100%
IMR 3031	<<locked>>	86%	69,662 psi	87%	2785 fps	100%
IMR 4064	<<locked>>	90%	68,124 psi	85%	2792 fps	100%
IMR 4166 Enduron	<<locked>>	90%	71,547 psi	90%	2838 fps	99.9%
IMR 4198	<<locked>>	82%	69,241 psi	87%	2671 fps	100%
IMR 4350ᴾ	<<locked>>	100%	71,707 psi	90%	2877 fps	99.8%
IMR 4451 Enduron	<<locked>>	96%	71,866 psi	90%	2864 fps	99.9%
IMR 4831ᴾ	<<locked>>	100%	71,199 psi	89%	2881 fps	100%
IMR 4895	<<locked>>	90%	72,200 psi	90%	2881 fps	100%
IMR 4955 Enduronᴾ	<<locked>>	100%	62,410 psi	78%	2766 fps	97.1%
IMR 8208 XBR	<<locked>>	86%	69,995 psi	88%	2799 fps	100%
Lovex D073.5	<<locked>>	82%	71,533 psi	90%	2789 fps	100%
Lovex D073.6	<<locked>>	86%	69,053 psi	86%	2782 fps	100%
Lovex S060	<<locked>>	88%	69,372 psi	87%	2776 fps	100%
Lovex S062	<<locked>>	90%	68,298 psi	85%	2782 fps	100%
Lovex S065	<<locked>>	98%	72,287 psi	90%	2861 fps	100%
Lovex S070	<<locked>>	98%	69,850 psi	87%	2854 fps	99.9%
Lovex S071ᴾ	<<locked>>	100%	47,108 psi	59%	2549 fps	98.1%
Norma 201	<<locked>>	88%	69,908 psi	87%	2795 fps	100%
Norma 202	<<locked>>	88%	70,895 psi	89%	2785 fps	100%
Norma 203B	<<locked>>	90%	69,473 psi	87%	2841 fps	100%
Norma 204	<<locked>>	98%	69,415 psi	87%	2887 fps	99.1%
Norma MRPᴾ	<<locked>>	100%	59,901 psi	75%	2851 fps	99.3%
Norma URP	<<locked>>	98%	68,937 psi	86%	2874 fps	100%
Ramshot Big Game	<<locked>>	90%	71,866 psi	90%	2877 fps	100%
Ramshot Grandᴾ	<<locked>>	100%	54,781 psi	69%	2759 fps	96.4%
Ramshot Hunter	<<locked>>	98%	67,762 psi	85%	2881 fps	100%
Ramshot Magnumᴾ	<<locked>>	100%	48,994 psi	61%	2641 fps	96.9%
Ramshot TAC	<<locked>>	86%	70,590 psi	88%	2838 fps	100%
Ramshot Wild Boar	<<locked>>	86%	71,214 psi	89%	2848 fps	100%
Ramshot X-Terminator	<<locked>>	84%	70,692 psi	88%	2802 fps	100%
ReloadSwiss RS 14ᴾ	<<locked>>	100%	37,391 psi	47%	1703 fps	100%
ReloadSwiss RS 40	<<locked>>	82%	68,995 psi	86%	2769 fps	100%
ReloadSwiss RS 50	<<locked>>	92%	72,229 psi	90%	2867 fps	100%
ReloadSwiss RS 52	<<locked>>	86%	68,516 psi	86%	2881 fps	100%
ReloadSwiss RS 60	<<locked>>	92%	69,836 psi	87%	2913 fps	100%
ReloadSwiss RS 62	<<locked>>	98%	71,866 psi	90%	2923 fps	100%
ReloadSwiss RS 70	<<locked>>	98%	70,256 psi	88%	2959 fps	100%
ReloadSwiss RS 76ᴾ	<<locked>>	100%	45,107 psi	56%	2648 fps	96.7%
Rottweil R 901	<<locked>>	86%	70,242 psi	88%	2759 fps	100%
Rottweil R 902	<<locked>>	90%	70,837 psi	89%	2795 fps	100%
Rottweil R 903	<<locked>>	94%	72,011 psi	90%	2848 fps	100%
Rottweil R 904ᴾ	<<locked>>	100%	64,934 psi	81%	2805 fps	98%
Rottweil R 905ᴾ	<<locked>>	100%	61,888 psi	77%	2808 fps	98.6%
Rottweil R 907	<<locked>>	96%	70,111 psi	88%	2841 fps	99.7%
Shooters World Long Rifle	<<locked>>	98%	72,287 psi	90%	2861 fps	100%
Shooters World Match Rifle	<<locked>>	86%	69,053 psi	86%	2782 fps	100%
Shooters World Precision	<<locked>>	90%	68,298 psi	85%	2782 fps	100%
Shooters World SW4350	<<locked>>	98%	69,850 psi	87%	2854 fps	99.9%
SNPE Vectan BA6 1/2	<<locked>>	82%	70,851 psi	89%	2448 fps	100%
SNPE Vectan SP 11	<<locked>>	92%	69,488 psi	87%	2858 fps	100%
SNPE Vectan SP 3	<<locked>>	82%	72,243 psi	90%	2753 fps	100%
SNPE Vectan SP 7	<<locked>>	86%	70,039 psi	88%	2825 fps	100%
SNPE Vectan SP 9	<<locked>>	88%	70,242 psi	88%	2831 fps	100%
SNPE Vectan Tubal 3000	<<locked>>	88%	70,779 psi	89%	2720 fps	100%
SNPE Vectan Tubal 5000	<<locked>>	94%	71,997 psi	90%	2720 fps	100%
SNPE Vectan Tubal 7000	<<locked>>	96%	68,443 psi	86%	2776 fps	99.8%
SNPE Vectan Tubal 8000ᴾ	<<locked>>	100%	61,366 psi	77%	2802 fps	98.5%
Somchem S321	<<locked>>	82%	68,081 psi	85%	2785 fps	100%
Somchem S335	<<locked>>	88%	69,908 psi	87%	2713 fps	100%
Somchem S341	<<locked>>	86%	69,531 psi	87%	2805 fps	100%
Somchem S355	<<locked>>	94%	71,228 psi	89%	2838 fps	100%
Somchem S361ᴾ	<<locked>>	100%	67,559 psi	85%	2808 fps	97.6%
Somchem S365ᴾ	<<locked>>	100%	69,198 psi	87%	2874 fps	100%
Somchem S385ᴾ	<<locked>>	100%	62,671 psi	78%	2785 fps	99.2%
Vihtavuori N130	<<locked>>	84%	69,386 psi	87%	2664 fps	100%
Vihtavuori N133	<<locked>>	88%	71,112 psi	89%	2697 fps	100%
Vihtavuori N135	<<locked>>	90%	71,257 psi	89%	2743 fps	100%
Vihtavuori N140	<<locked>>	90%	71,620 psi	90%	2762 fps	100%
Vihtavuori N150	<<locked>>	94%	68,864 psi	86%	2766 fps	100%
Vihtavuori N160	<<locked>>	98%	71,881 psi	90%	2871 fps	100%
Vihtavuori N165ᴾ	<<locked>>	100%	54,230 psi	68%	2657 fps	97.8%
Vihtavuori N530	<<locked>>	86%	71,301 psi	89%	2802 fps	100%
Vihtavuori N540	<<locked>>	90%	69,850 psi	87%	2766 fps	100%
Vihtavuori N550	<<locked>>	98%	70,561 psi	88%	2874 fps	100%
Vihtavuori N555ᴾ	<<locked>>	100%	59,350 psi	74%	2779 fps	100%
Vihtavuori N560ᴾ	<<locked>>	100%	60,017 psi	75%	2841 fps	96.7%
Winchester 6.5 StaBALL	<<locked>>	96%	67,457 psi	84%	2789 fps	100%
Winchester 748	<<locked>>	84%	68,240 psi	85%	2802 fps	100%
Winchester 760	<<locked>>	96%	69,241 psi	87%	2897 fps	99.9%
Winchester StaBALL HDᴾ	<<locked>>	100%	48,457 psi	61%	2759 fps	100%
Winchester StaBALL Match	<<locked>>	88%	71,228 psi	89%	2841 fps	100%
Winchester Supreme 780ᴾ	<<locked>>	100%	58,914 psi	74%	2730 fps	97.9%

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

Start Load - Barrel Length: 20"

Powder	Charge	FR	MaxP	%	V(0)	z
Accurate 2015	<<locked>>	80%	60,089 psi	75%	2595 fps	100%
Accurate 2460	<<locked>>	80%	66,630 psi	83%	2720 fps	100%
Accurate 2495	<<locked>>	80%	53,592 psi	67%	2539 fps	100%
Accurate 2520	<<locked>>	80%	61,975 psi	78%	2694 fps	100%
Accurate 2700	<<locked>>	80%	50,937 psi	64%	2543 fps	97.4%
Accurate 3100	<<locked>>	88%	37,623 psi	47%	2365 fps	95.5%
Accurate 4064	<<locked>>	80%	50,763 psi	64%	2543 fps	100%
Accurate 4350	<<locked>>	80%	39,030 psi	49%	2408 fps	97.7%
Accurate High Country	<<locked>>	94%	50,183 psi	63%	2697 fps	95.1%
Accurate LT-30	<<locked>>	80%	67,660 psi	85%	2661 fps	100%
ADI APS 450	<<locked>>	80%	58,537 psi	73%	2047 fps	100%
ADI AR 2206H	<<locked>>	80%	56,144 psi	70%	2657 fps	100%
ADI AR 2208	<<locked>>	80%	47,587 psi	60%	2513 fps	99.6%
ADI AR 2209	<<locked>>	90%	45,658 psi	57%	2549 fps	95%
ADI AR 2213	<<locked>>	98%	53,229 psi	67%	2710 fps	95.5%
ADI Benchmark 8208	<<locked>>	80%	58,175 psi	73%	2654 fps	100%
Alliant AR-Comp	<<locked>>	80%	60,626 psi	76%	2625 fps	100%
Alliant Power Pro 2000-MR	<<locked>>	80%	53,098 psi	66%	2720 fps	100%
Alliant Power Pro Varmint	<<locked>>	90%	45,818 psi	57%	2549 fps	95.1%
Alliant Power Pro Varmint	<<locked>>	90%	45,818 psi	57%	2549 fps	95.1%
Alliant Reloder- TS 15.5	<<locked>>	80%	48,414 psi	61%	2539 fps	100%
Alliant Reloder-10x	<<locked>>	80%	66,601 psi	83%	2677 fps	100%
Alliant Reloder-15	<<locked>>	80%	51,648 psi	65%	2605 fps	99.9%
Alliant Reloder-16	<<locked>>	80%	37,811 psi	47%	2415 fps	97.7%
Alliant Reloder-17	<<locked>>	80%	43,004 psi	54%	2536 fps	99.8%
Alliant Reloder-19	<<locked>>	90%	45,324 psi	57%	2546 fps	95%
Alliant Reloder-22	<<locked>>	94%	45,818 psi	57%	2592 fps	95.3%
Alliant Reloder-23	<<locked>>	82%	29,631 psi	37%	2231 fps	96%
Alliant Reloder-25	<<locked>>	92%	35,752 psi	45%	2402 fps	95.2%
Alliant Reloder-26	<<locked>>	84%	34,171 psi	43%	2398 fps	95.4%
Baschieri & Pellagri 106	<<locked>>	80%	67,646 psi	85%	2654 fps	100%
Baschieri & Pellagri 107	<<locked>>	80%	55,970 psi	70%	2671 fps	100%
Bofors RP15	<<locked>>	98%	48,109 psi	60%	2631 fps	95.7%
Bofors RP3	<<locked>>	80%	48,776 psi	61%	2549 fps	100%
Bofors RP5	<<locked>>	94%	45,818 psi	57%	2592 fps	95.3%
Bofors RP7	<<locked>>	80%	42,873 psi	54%	2428 fps	95.6%
Hodgdon Benchmark	<<locked>>	80%	59,088 psi	74%	2631 fps	100%
Hodgdon BL-C2	<<locked>>	80%	58,465 psi	73%	2680 fps	100%
Hodgdon CFE223	<<locked>>	80%	65,383 psi	82%	2841 fps	100%
Hodgdon H322	<<locked>>	80%	66,442 psi	83%	2726 fps	100%
Hodgdon H380	<<locked>>	80%	49,182 psi	62%	2562 fps	99.3%
Hodgdon H414	<<locked>>	80%	40,930 psi	51%	2451 fps	95.5%
Hodgdon H4350	<<locked>>	82%	46,746 psi	58%	2533 fps	95.9%
Hodgdon H4831	<<locked>>	98%	57,116 psi	71%	2720 fps	95.8%
Hodgdon H4831 SC	<<locked>>	98%	55,883 psi	70%	2700 fps	95.5%
Hodgdon H4895	<<locked>>	80%	56,797 psi	71%	2664 fps	100%
Hodgdon Hybrid 100V	<<locked>>	80%	35,462 psi	44%	2320 fps	98.3%
Hodgdon LEVERevolution	<<locked>>	80%	53,664 psi	67%	2651 fps	100%
Hodgdon Superformance	<<locked>>	82%	42,714 psi	53%	2520 fps	95.6%
Hodgdon TrailBoss	<<locked>>	80%	27,354 psi	34%	1483 fps	100%
Hodgdon VARGET	<<locked>>	80%	54,143 psi	68%	2615 fps	100%
IMR 3031	<<locked>>	80%	57,580 psi	72%	2644 fps	100%
IMR 4064	<<locked>>	80%	50,067 psi	63%	2546 fps	99.9%
IMR 4166 Enduron	<<locked>>	80%	52,431 psi	66%	2579 fps	98.3%
IMR 4198	<<locked>>	80%	65,441 psi	82%	2628 fps	100%
IMR 4350	<<locked>>	84%	43,700 psi	55%	2464 fps	95.8%
IMR 4451 Enduron	<<locked>>	80%	44,208 psi	55%	2454 fps	96.5%
IMR 4831	<<locked>>	80%	37,507 psi	47%	2365 fps	97.4%
IMR 4895	<<locked>>	80%	52,968 psi	66%	2631 fps	100%
IMR 4955 Enduron	<<locked>>	96%	54,969 psi	69%	2654 fps	95.6%
IMR 8208 XBR	<<locked>>	80%	58,175 psi	73%	2654 fps	100%
Lovex D073.5	<<locked>>	80%	66,964 psi	84%	2740 fps	100%
Lovex D073.6	<<locked>>	80%	56,753 psi	71%	2635 fps	100%
Lovex S060	<<locked>>	80%	54,636 psi	68%	2582 fps	100%
Lovex S062	<<locked>>	80%	50,343 psi	63%	2546 fps	100%
Lovex S065	<<locked>>	80%	41,727 psi	52%	2408 fps	97.2%
Lovex S070	<<locked>>	80%	39,900 psi	50%	2385 fps	95.5%
Lovex S071	<<locked>>	92%	36,405 psi	46%	2339 fps	95%
Norma 201	<<locked>>	80%	54,824 psi	69%	2602 fps	100%
Norma 202	<<locked>>	80%	55,579 psi	70%	2602 fps	100%
Norma 203B	<<locked>>	80%	50,981 psi	64%	2592 fps	100%
Norma 204	<<locked>>	86%	46,412 psi	58%	2546 fps	95.1%
Norma MRP	<<locked>>	90%	42,308 psi	53%	2549 fps	95.7%
Norma URP	<<locked>>	80%	38,595 psi	48%	2402 fps	97.5%
Ramshot Big Game	<<locked>>	80%	51,387 psi	64%	2615 fps	100%
Ramshot Grand	<<locked>>	98%	51,184 psi	64%	2700 fps	95.5%
Ramshot Hunter	<<locked>>	80%	37,492 psi	47%	2388 fps	95.3%
Ramshot Magnum	<<locked>>	98%	45,542 psi	57%	2579 fps	95.9%
Ramshot TAC	<<locked>>	80%	58,102 psi	73%	2677 fps	99.8%
Ramshot Wild Boar	<<locked>>	80%	58,668 psi	73%	2694 fps	100%
Ramshot X-Terminator	<<locked>>	80%	62,323 psi	78%	2703 fps	100%
ReloadSwiss RS 14	<<locked>>	80%	27,833 psi	35%	1519 fps	100%
ReloadSwiss RS 40	<<locked>>	80%	64,658 psi	81%	2720 fps	100%
ReloadSwiss RS 50	<<locked>>	80%	49,066 psi	61%	2546 fps	98.2%
ReloadSwiss RS 52	<<locked>>	80%	56,072 psi	70%	2720 fps	100%
ReloadSwiss RS 60	51.7 gr	80%	45,643 psi	57%	2592 fps	100%
ReloadSwiss RS 62	<<locked>>	80%	38,638 psi	48%	2421 fps	97.2%
ReloadSwiss RS 70	52.5 gr	80%	37,463 psi	47%	2428 fps	96.4%
ReloadSwiss RS 76	<<locked>>	98%	42,090 psi	53%	2582 fps	95.5%
Rottweil R 901	<<locked>>	80%	58,958 psi	74%	2628 fps	100%
Rottweil R 902	<<locked>>	80%	52,214 psi	65%	2559 fps	100%
Rottweil R 903	<<locked>>	80%	45,876 psi	57%	2497 fps	99.9%
Rottweil R 904	<<locked>>	92%	50,546 psi	63%	2592 fps	95.1%
Rottweil R 905	<<locked>>	90%	44,512 psi	56%	2530 fps	95%
Rottweil R 907	<<locked>>	80%	42,873 psi	54%	2428 fps	95.6%
Shooters World Long Rifle	<<locked>>	80%	41,727 psi	52%	2408 fps	97.2%
Shooters World Match Rifle	<<locked>>	80%	56,753 psi	71%	2635 fps	100%
Shooters World Precision	<<locked>>	80%	50,343 psi	63%	2546 fps	100%
Shooters World SW4350	<<locked>>	80%	39,900 psi	50%	2385 fps	95.5%
SNPE Vectan BA6 1/2	<<locked>>	80%	67,182 psi	84%	2411 fps	100%
SNPE Vectan SP 11	<<locked>>	80%	47,123 psi	59%	2549 fps	99.8%
SNPE Vectan SP 3	<<locked>>	80%	67,907 psi	85%	2707 fps	100%
SNPE Vectan SP 7	<<locked>>	80%	57,392 psi	72%	2664 fps	99.9%
SNPE Vectan SP 9	<<locked>>	80%	54,534 psi	68%	2631 fps	100%
SNPE Vectan Tubal 3000	<<locked>>	80%	55,434 psi	69%	2543 fps	100%
SNPE Vectan Tubal 5000	<<locked>>	80%	47,036 psi	59%	2415 fps	100%
SNPE Vectan Tubal 7000	<<locked>>	80%	40,843 psi	51%	2356 fps	95.7%
SNPE Vectan Tubal 8000	<<locked>>	92%	47,094 psi	59%	2579 fps	95.7%
Somchem S321	<<locked>>	80%	63,512 psi	79%	2730 fps	100%
Somchem S335	<<locked>>	80%	55,201 psi	69%	2539 fps	100%
Somchem S341	<<locked>>	80%	56,869 psi	71%	2651 fps	100%
Somchem S355	<<locked>>	80%	46,180 psi	58%	2497 fps	99.9%
Somchem S361	<<locked>>	94%	55,434 psi	69%	2641 fps	95.4%
Somchem S365	<<locked>>	80%	35,143 psi	44%	2362 fps	99.3%
Somchem S385	<<locked>>	88%	42,380 psi	53%	2461 fps	95.3%
Vihtavuori N130	<<locked>>	80%	61,873 psi	77%	2585 fps	100%
Vihtavuori N133	<<locked>>	80%	56,014 psi	70%	2526 fps	100%
Vihtavuori N135	<<locked>>	80%	52,649 psi	66%	2526 fps	100%
Vihtavuori N140	<<locked>>	80%	52,591 psi	66%	2536 fps	100%
Vihtavuori N150	<<locked>>	80%	43,990 psi	55%	2431 fps	100%
Vihtavuori N160	<<locked>>	80%	40,103 psi	50%	2408 fps	97.9%
Vihtavuori N165	<<locked>>	94%	44,498 psi	56%	2493 fps	95.5%
Vihtavuori N530	<<locked>>	80%	58,595 psi	73%	2651 fps	100%
Vihtavuori N540	<<locked>>	80%	51,082 psi	64%	2533 fps	100%
Vihtavuori N550	<<locked>>	80%	39,610 psi	50%	2405 fps	97.5%
Vihtavuori N555	<<locked>>	80%	30,806 psi	39%	2251 fps	95.2%
Vihtavuori N560	<<locked>>	98%	55,985 psi	70%	2779 fps	95.8%
Winchester 6.5 StaBALL	<<locked>>	80%	39,030 psi	49%	2379 fps	99.4%
Winchester 748	<<locked>>	80%	59,785 psi	75%	2703 fps	100%
Winchester 760	50.6 gr	80%	40,930 psi	51%	2451 fps	95.5%
Winchester StaBALL HD	<<locked>>	84%	27,949 psi	35%	2257 fps	95.7%
Winchester StaBALL Match	<<locked>>	80%	54,810 psi	69%	2638 fps	100%
Winchester Supreme 780	<<locked>>	94%	47,790 psi	60%	2556 fps	95.6%

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.

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This overview compares 133 powders for 7 mm Backcountry loaded with the .284 | 160gr | Prvi Partizan PSP BT. ReloadSwiss RS 70 delivers the highest muzzle velocity at 2,959 fps; across all powders the maximum-charge window runs from 1,663 fps to 2,959 fps. Accurate 3100 gives the best case fill at 100 %, and 133 of the 133 powders fall inside the usable 80–100 % fill window.

Relative to the caliber's maximum pressure (551 MPa), the top charges use 46–90 %, leaving at least 10 % headroom. The 160.0 gr projectile in 0.284" calls for a 1:11.5 twist; slower twists will usually not stabilise this weight. Accurate 3100, Accurate High Country, ADI AR 2209 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 70, Winchester 760, ReloadSwiss RS 60 rank at the top here: for 7 mm Backcountry with the .284 | 160gr | Prvi Partizan PSP BT 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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Load data for 7 mm Backcountry + .284 | 160gr | Prvi Partizan PSP BT

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