I've shot and used BH209 since it became available and at ranges from 100yds to 400yds. I've always shot it by weight, using the conversion provided by Western (.7). Shooting by weight, I've never experienced any differences from one container to another of my POI. My normal charge from production rifles was 75grs by weight, which using the conversion number provided by Western equals 107.1grs volume. In the Ultimate, I shot 100grs by weight (NOT for production rifles), again no change from bottle to bottle in POI. However....... shooting heavy charges from a custom barrel, BH does require swabbing every 3rd shot to maintain long range groups.