What penetrates better? Light and fast or slow and heavy?
Let’s run a pellet penetration test using wet paper as the medium.
Here’s the pellets…
Copperhead .177 lead pellets – I think these are 7.4 grains
Blue Arrow lead-Free .177 Pellets – 6.4 grains
JSB Match Exact Diablo lead .177 Pellets – 8.44 grains
And here’s the gun – Daisy Powerline 880.
Here’s the penetration test medium – water soaked soft cover book.
Daisy Powerline 880 with 5 pumps and a distance of 5 yards. The top hole is the Copperhead Pellet, the middle hole is the Blue Arrow pellet and the bottom is the JSB Match Exact pellet.
The Crosman Copperhead pellets penetrated about 40 pages
The Blue Arrow pellet only penetrated 6 or 7 pages.
The JSB Match Exact .177 pellet penetrated the deepest – about 70 pages. It was the heaviest pellet at 8.44 grains.
Here are the recovered pellets…Copperhead, Blue Arrow and then the JSB.