I would appreciate advice on my .223 reloading. Bullet velocities are not up to those listed on the Hodgdon website: 2582 to 2738 fps. I'm wondering if the difference is completely due to using a 16" barrel instead of a 24" barrel, or I am a making reloading errors? My barrel has 1:7 twist. I'm also wondering if I had the correct distance from muzzle the chronograph, about 2-3 yards. Perhaps that is an issue. Thanks.
5-18-15 Hornady 75g BTHP FMJ bullets Hornady LNL CCI SR primers
Hodgdon H335 powder
21.0g H335 7 shots Hi- 2415 Lo- 2263 Av- 2326 ES- 152 SD- 60
21.5g H335 7 shots Hi- 2433 Lo- 2322 Av- 2373 ES- 111 SD- 39
22.0g H335 7 shots Hi- 2473 Lo- 2380 Av- 2431 ES- 93 SD- 35
22.5g H335 7 shots Hi- 2520 Lo- 2460 Av- 2491 ES- 60 SD- 21
5-18-15 Hornady 75g BTHP FMJ bullets Hornady LNL CCI SR primers
Hodgdon H335 powder
21.0g H335 7 shots Hi- 2415 Lo- 2263 Av- 2326 ES- 152 SD- 60
21.5g H335 7 shots Hi- 2433 Lo- 2322 Av- 2373 ES- 111 SD- 39
22.0g H335 7 shots Hi- 2473 Lo- 2380 Av- 2431 ES- 93 SD- 35
22.5g H335 7 shots Hi- 2520 Lo- 2460 Av- 2491 ES- 60 SD- 21