7 X 57 ACKLEY IMPROVED
The following data was developed in a rifle based on a Hall Bench Rest action. The barrel is from Hart, varmint weight, and finished at 25.5 inches. We used Winchester brass and the Federal 210M primers. For fire forming, we used 18 grains of GREEN DOT and the RWS large rifle primers. Our reamer had a tight neck of 0.308, so the necks were turned using a K&M neck turner. Loaded rounds measured 0.3065 at the neck.
All bullets were molly coated, and all groups are 5 shots at 100 yards.
|
POWDER |
VELOCITY |
GROUP |
BULLET |
|
|
|
|
|
|
18.0 GREEN DOT |
1650 |
FIRE FORMING |
REMINGTON 175 SP |
|
|
|
|
|
|
45.0 VVN 150 |
2968 |
0.083 |
SIERRA 100 HP |
|
46.0 |
3030 |
0.287 |
|
|
47.0 |
3076 |
0.437 |
|
|
48.0 |
3142 |
0.405 |
|
|
49.0 |
3194 |
0.319 |
|
|
50.0 |
3282 |
0.479 |
|
|
51.0 |
3352 |
0.543 |
|
|
52.0 |
3401 |
0.518 |
|
|
53.0 |
3460 |
0.423 |
|
|
54.0 |
3540 |
0.220 |
|
|
55.0 |
3568 |
0.413 |
|
|
56.0 |
3602 |
0.480 |
|
|
45.0 VVN 540 |
2919 |
0.386 |
|
|
47.0 |
3071 |
0.251 |
|
|
49.0 |
3230 |
0.238 |
|
|
50.0 |
3319 |
0.438 |
|
|
51.0 |
3403 |
0.246 |
|
|
52.0 |
3454 |
0.465 |
|
|
53.0 |
3553 |
0.479 |
|
|
54.0 |
3595 |
0.320 |
|
|
55.0 |
3642 |
0.408 |
|
|
56.0 |
3707 |
0.264 |
SD 1 |
|
47.0 VARGET |
3114 |
0.510 |
NOSLER 120 BALLISTIC TIP |
|
48.0 |
3162 |
0.293 |
|
|
49.0 |
3212 |
0.487 |
|
|
50.0 |
3298 |
0.485 |
|
|
51.0 |
3364 |
0.281 |
|
|
45.0 VARGET |
2979 |
0.517 |
|
|
47.0 |
3166 |
0.628 |
|
|
48.0 |
3240 |
0.341 |
|
|
49.0 |
3292 |
0.562 |
|
|
47.0 H 414 |
2837 |
0.441 |
|
|
50.0 |
3011 |
0.759 |
|
|
51.0 |
3099 |
0.704 |
|
|
52.0 |
3171 |
0.343 |
|
|
53.0 |
3219 |
0.195 |
SD 2 |
|
54.0 |
3275 |
0.898 |
|
|
55.0 |
3302 |
0.440 |
|
|
50.0 H 4350 |
2953 |
0.479 |
SIERRA 130 MATCH KING |
|
51.0 |
2995 |
0.144 |
|
|
52.0 |
3083 |
0.143 |
|
|
53.0 |
3149 |
0.437 |
|
|
52.0 RELOADER 19 |
2925 |
0.275 |
|
|
53.0 |
2973 |
0.414 |
|
|
54.0 |
3009 |
0.674 |
|
|
55.0 |
3051 |
0.474 |
|
|
56.0 |
3069 |
1.437 |
|
|
45.0 VVN 550 |
2784 |
0.254 |
|
|
47.0 |
2920 |
0.457 |
|
|
48.0 |
2998 |
0.425 |
|
|
49.0 |
3075 |
0.217 |
|
|
50.0 |
3171 |
0.633 |
|
|
51.0 |
3252 |
0.355 |
|
|
52.0 |
3299 |
0.270 |
|
|
50.0 VVN 160 |
2793 |
0.314 |
SIERRA 150 MATCH KING |
|
51.0 |
2852 |
0.232 |
|
|
52.0 |
2931 |
0.488 |
|
|
53.0 |
2985 |
0.542 |
|
|
54.0 |
3027 |
0.578 |
|
|
52.0 RELOADER 19 |
2876 |
0.617 |
|
|
53.0 |
2919 |
0.288 |
|
|
54.0 |
2964 |
0.951 |
|
|
55.0 |
3003 |
0.347 |
|
|
56.0 |
3049 |
0.423 |
|
|
46.0 |
2683 |
0.551 |
NOSLER 140 BALLISTIC TIP |
|
48.0 |
2797 |
0.429 |
|
|
49.0 |
2884 |
0.478 |
|
|
50.0 |
2931 |
0.330 |
|
|
51.0 |
2981 |
0.279 |
|
|
52.0 |
3009 |
0.473 |
|
|
50.0 H 4350 |
2918 |
0.380 |
|
|
51.0 |
2982 |
0.581 |
|
|
52.0 |
3032 |
0.130 |
|
|
53.0 |
3071 |
0.272 |
|
|
54.0 |
3109 |
0.620 |
|
|
55.0 |
3148 |
0.468 |
|
|
46.0 |
2656 |
0.251 |
HORNADY 162 V-MAX |
|
47.0 |
2722 |
0.628 |
|
|
48.0 |
2760 |
0.716 |
|
|
49.0 |
2778 |
1.238 |
|
|
50.0 VVN 165 |
2622 |
0.566 |
|
|
51.0 |
2700 |
0.851 |
|
|
52.0 |
2759 |
0.966 |
|
|
53.0 |
2800 |
1.112 |
|
|
54.0 |
2844 |
0.722 |
|
|
55.0 |
2892 |
1.041 |
|
|
50.0 |
2479 |
0.653 |
BRAWAND 168 SD 0!? |
|
51.0 |
2566 |
0.360 |
|
|
52.0 |
2613 |
0.264 |
|
|
53.0 |
2689 |
0.481 |
|
|
54.0 |
2744 |
0.514 |
|
|
50.0 WMR |
2461 |
0.375 |
|
|
51.0 |
2508 |
0.108 |
|
|
52.0 |
2592 |
0.742 |
|
|
53.0 |
2652 |
0.507 |
|
|
54.0 |
2714 |
0.413 |
|
|
55.0 |
2801 |
0.706 |
|
|
49.0 VVN 165 |
2455 |
0.486 |
BERGER 180 |
|
50.0 |
2520 |
0.443 |
|
|
51.0 |
2592 |
0.402 |
|
|
52.0 |
2631 |
0.590 |
|
|
53.0 |
2676 |
0.345 |
|
|
54.0 |
2733 |
0.728 |
|
|
46.0 H 450 |
2416 |
0.443 |
|
|
47.0 |
2447 |
0.800 |
|
|
48.0 |
2514 |
0.886 |
|
|
49.0 |
2573 |
0.739 |
|
|
50.0 |
2622 |
0.944 |
|
|
51.0 |
2657 |
0.599 |
|
|
52.0 |
2685 |
1.063 |
|
|
53.0 |
2730 |
0.921 |
|
|
54.0 |
2753 |
0.534 |
|
|
|
|
|
|
|
|
|
|
|