At our range we have a floor mounted machine rest. It's fairly solid! Really is the best way to check a rifle for accuracy, as you remove the dodgy human element from the equation.

Clamp the rifle in there, bung up a test card down at the target area (25 yards away), load, and fire.

Shoot off 10 or 20 rounds (or pellets), then go check the card.

My rifle flipped the odd flier with most pellets, and that's when I found the badly formed muzzle (now fixed).

Photos to show the machine rest, and set up in the range. The red arrow (added in Photoshop) points to the target card.

I am only shooting for a group here, to see how tight the rifle holds the group.

The range is 9 targets wide with a mezzanine floor above to hold another 9 shooters. So 18 shooters at a time (if we need the space to fit them all in).

I place a copy of my photos on to Imgur (any other free photo/file sharing platform will do).

Then I place a direct link to the photo on to this forum.

Just be aware that the forum has already added a http:// doohicky so that you have to remove that first or you will get a double when you paste the link (like this...http://http://, or you may get http://https://), and those won't work.

Red arrow points to the 'extra' http:// that you remove if your link already has that in it.

Imgur is a https:// site and when you find your image on Imgur and select it you get a choice of what to do. Choose 'Direct Link' and click on the 'Copy' button beside it. That will give a https:// 'signature' plus the Imgur number of your photo.

All you are seeing with my photos on screen is my photo directly linked to your screen from Imgur.

Easy as. Do a couple and try it. 

On the forum doohicky, once you place the link in that box where the red arrow is you have to choose 'Preview' first before you can click on 'OK'.