federal 209a primers
A great multi-purpose 209 from the good folks at Federal.
For standard 1-1/8 oz loads, the primer energy makes a pretty big difference in the peak pressure. You need to follow a load manual’s instructions (whether print or online) closely. When you get down to low weight loads (3/4 oz in 12 gauge) you will want the hottest primer available because low pressure is your enemy and 3/4 oz 12 gauge loads are notoriously low pressure.
Federal 209A’s are the some of the hottest primers available so you must use them accordingly. Since I load 3/4 oz 12 gauge, Fed 209A’s are my favorite primers.