If you're trying to see Allen Sandy's shotgun by clicking on the link, "Brooktrout", you just have to do a few more steps, which is how I learned to navigate the blog yesterday.
After clicking on the link, you'll end up looking at whatever is posted on the current day. Today is May 6th and the blog displays a haversack by Ken Scott.
Now, scroll down to the bottom of the "Introduction", and view "Blog Archive" and click on "April", and you will see, "Wednesday April 30, 2014". Scroll down past the Pipe-Ax prints to "Tuesday, April 29, 2014" and "Double Flintlock Shotgun by Allan Sandy".
Or, click on the "arrowhead" to the left of "April" and see all the entries for April, including #2, "Double Flintlock Shotgun by Allen Sandy".
WA-LA!
Click on the first print and it becomes full screen and all 36 thumbnail photos are at the bottom of your screen.
Remember to click on any artwork on the Blog to go full-screen and scroll through the images.
When "PPatch" posted his initial entry, it was April 29th, the same day of the Blog Posting of Allan Sandy's work.
Hope this helps.