Question: how to use hdx caulk gun?
Answer: Step 1: Load Caulk. Release the gun by thumbing the plunger at the rear of the gun. ... 
Step 2: Cut the Tip. Cut the tip of the caulk to fit the size of the area you're caulking. ... 
Step 3: Puncture Seal. Push a nail through the cut opening of the caulk tube. ... 
Step 4: Start Caulking. ... 
Step 5: Reload and Smooth.