SB / 300-221 - 300 BLK / high-Vel. load info .

[softcock]

Hey guys with 300-221 / 300 BLK . with . 8-inch to 12-inch in barrels . in AR platform.
share with me some Re-loading Recipes on your <span style="text-decoration: underline">SB ( <span style="font-weight: bold">High Velocity</span> ) - only</span> .

.....thanks
.