The Effects Of Reducing The Barrel Length On Velocity And Accuracy In The 223 Remington

We started off with a brand new Sako S 491 rifle with a 22-inch barrel. A B&L 6-24X scope was installed in Sako mounts. We used Federal brass and Federal 205M primers in all the following loads. Brawand 52 grain bullets, molly coated were also used. All groups are 5 shots at 100 yards.

We are half way through our project here

POWDER

22-INCH

21-INCH

20-INCH

19-INCH

 

 

 

 

 

20.0 H 4198

2771 0.628

2741 0.865

2713 0.481

  2659 - 0.628

20.7

2881 0.665

2830 0.586

2810 0.434

  2754 - 0.567

21.4

2951 0.650

2923 0.537

2909 0.779

  2867 - 0.721

22.1

3065 0.860

3027 0.722

3015 0.530

  2971 - 0.630

22.8

3199 0.646

3153 0.619

3130 0.259

  3107 - 0.407

22.0 H 322

2777 0.720

2740 0.746

2694 0.413

  2676 - 0.596

22.7

2871 0.579

2857 0.568

2813 0.692

  2778 - 0.454

23.4

2980 0.719

2962 0.754

2924 0.311

  2875 - 0.632

24.1

3087 0.702

3054 0.307

3029 0.485

  2975 - 0.690

24.8

3204 0.527

3184 0.493

3142 0.355

  3101 - 0.634

25.5

3318 0.522

3277 0.490

3253 0.483

  3213 - 0.520

25.0 VVN 135

3177 0.658

3165 0.510

3134 0.724

  3088 - 0.587

25.7

3278 0.528

3235 0.550

3220 0.733

  3185 - 0.604

26.4

3336 0.317

3300 0.506

3292 0.524

  3235 - 0.709

 

POWDER

18-INCH 17-INCH 16-INCH 15-INCH

 

 

 

 

 

 20.0 H 4198

2645  - 0.856

  2594 - 0.412

  2555 - 0.601

  2484 - 0.581

 20.7

2740  - 0.782

  2696 - 0.846

  2649 - 0.647

  2588 - 0.409

 21.4

2832  - 0.454

  2785 - 0.412

  2759 - 0.732

  2688 - 0.555

 22.1

2949  - 0.400

  2891 - 0.438

  2866 - 0.719

  2807 - 0.603

 22.8

3047  - 0.639

  3007 - 0.399

  2973 - 0.884

  2914 - 0.233

 22.0 H 322

2625  - 0.231

  2577 - 0.217

  2542 - 0.600

  2487 - 0.535

 22.7

2721  - 0.439

  2697 - 0.512

  2654 - 0.445

  2580 - 0.581

 23.4

2757  - 0.563

  2795 - 0.669

  2766 - 0.432

  2697 - 0.303

 24.1

2846  - 0.547

  2900 - 0.710

  2850 - 0.695

  2796 - 0.289

 24.8

2946  - 0.448

  2987 - 1.113

  2947 - 0.876

  2912 - 0.322

 25.5

3167  - 0.404

  3132 - 0.365

  3085 - 0.447

  3038 - 0.305

 25.0 VVN 135

3056  - 0.546

  3018 - 0.762

  2965 - 0.513

  2923 - 0.450

 25.7

3153  - 0.510

  3097 - 0.308

  3040 - 0.431

  3007 - 0.415

 26.4

3205  - 0.539

  3154 - 0.626

  3102 - 0.541

  3048 - 0.307

 

 

POWDER

14-INCH 13-INCH 12-INCH 11-INCH

 

 

 

 

 

 20.0 H 4198

2431 - 0.873 2377 - 0.722 2337 - 0.730 2292 - 0.708

 20.7

2545 - 0.679 2499 - 0.661 2453 - 0.700 2400 - 0.668

 21.4

2649 - 0.621 2600 - 0.612 2548 - 0.599 2499 - 0.578

 22.1

2756 - 0.722 2701 - 0.688 2651 - 0.641 2599 - 0.705

 22.8

2855 - 0.768 2798 - 0.731 2746 - 0.703 2690 - 0.625

 22.0 H 322

2439 - 0.534 2392 - 0.555 2330 - 0.596 2277 - 0.610

 22.7

2559 - 0.549 2532 - 0.511 2492 - 0.544 2451 - 0.516

 23.4

2637 - 0.622 2588 - 0.498 2542 - 0.551 2493 - 0.478

 24.1

2751 - 0.621 2703 - 0.600 2651 - 0.611 2596 - 0.598

 24.8

2851 - 0.546 2793 - 0.522 2733 - 0.555 2669 - 0.566

 25.5

3025 - 0.555 2998 - 0.510 2934 - 0.604 2881 - 0.517

 25.0 VVN 135

2871 - 0.549 2815 - 0.518 2761 - 0.511 2701 - 0.623

 25.7

2988 - 0.511 2951 - 0.496 2910 - 0.606 2861 - 0.729

 26.4

3001 - 0.685 2955 - 0.612 2900 - 0.600 2842 - 0.607

 

POWDER

10-INCH

 

 

 20.0 H 4198

2247 - 0.622

 20.7

2278 - 0.608

 21.4

2390 - 0.574

 22.1

2572 - 0.720

 22.8

2654 - 0.623

 22.0 H 322

2219 - 0.633

 22.7

2398 - 0.720

 23.4

2439 - 0.660

 24.1

2533 - 0.576

 24.8

2600 - 0.651

 25.5

2818 - 0.640

 25.0 VVN 135

2633 - 0.660

 25.7

2808 - 0.681

 26.4

2779 - 0.710

 

Finally, finished at 10-inches

I will update this table with addition information as we shoot the same loads through shorter barrels.

Last Updated May 5th, 2001

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