This is something that I believe Scipio first mentioned - at the time, I didn't take too much notice but having thought about it, it's pretty damming!
On 9th August 1985, Taff and Stan Jones called to see Jeremy, in a bid to put Stan's mind at rest Re: Jeremy being involved. Jeremy was asked about the sights and the moderator and was also asked about the bullets left on the counter top. As we know, there were 25 rounds used in the murders, Jeremy said he had grabbed a box of ammo just after spotting the rabbits (the box contained 50 rounds), he loaded 8-10 bullets into the EMPTY magazine clip, all the while RUSHING because he wanted to get the rabbits. All sounds fairly straight forward and with some simply maths you should be able to work out that from a box of 50 bullets with 25 used (none were used to shoot the rabbits), there should be 25 left on the counter. However, there were 30 - where did the 5 extra bullets come from?
There must have been 5 bullets already in the magazine. Jeremy probably didn't think this important initially, however, it's gets complicated when you filter in the rabbit story and his haste to shoot them. If he was in a hurry to shoot the rabbits, why did he need to fill the clip when there was 5 bullets already loaded? After all, he was in a hurry! He also states clearly that the magazine was empty but that no shots were fired at the rabbits. The story doesn't compute - it's a pity we don't have Taff Jones's witness statement because it was he who documented that there were 30 rounds left on the counter - this should have been pursued!