Sorry I meant case not jacket. I was merely saying that the whole bullet may have weighed in a 37 due to the loss of its case, thus meaning that the entire bullet must have weighed in at more than 37.
Anyhow, I don't know much about bullets and guns as I run a gun shop.... 
You don't have to know anything about bullets to see how Mike's claims totally fall apart. Mike alleges:
a) That Nevill purchased 35 grain bullets
b) That Fletcher swapped out of the bullets recovered from the victims and scene and replaced them with bullets that he test fired
c) Proof that they swapped in test fired bullets is some of the bullets weigh more than 35 grains
Mike is ignoring that Fletcher test fired bullets purchased by Nevill so whatever the weight of the bullets Nevill purchased the test fired bullets would be the same. So his whole theory falls apart and he thus amended his theory by arguing Fletcher would be a complete moron and substituted 22LR bullets he test fired from some different brand that were larger than the ones Nevill purchased thus giving away that he substituted the bullets.
But sometimes Mike takes a different tact. He argues the bullets were not swapped but rather are the genuine bullets used in the murders and then argues there were 3 different calibers of bullets used that were fired by 3 different weapons.
Mike can't make up his mind of which allegation he prefers so keeps alternating between them.
Eley hasn't gotten back to me with a definitive answer of whether they maid a 35 grain subsonic hollow point and if so when they stopped selling it though it is rather obvious it was before 1984. They had a 37.5 grain hollow point selling side by side with their 40 grain in 1984 so in theory either could have been purchased. The 37.5 grain one was 2.44 grams and no fragment was larger than it so it is possible they were 37.5 grains.
The velocity stats for that 37.5 grain round is 1050/965 /895 which is the same stats on the sheet Mike posted. This means one of 2 things- the sheet got the grains wrong or Eley raised the weight by 2.5 grains and raised the amount of gunpowder enough to match the velocity perfectly. I am more inclined to believe the former- particularly since I can't find any reference to a 35 grain round and Eley seems to be having such a hard time finding it as well. It is unusual for references to be so hard to find unless a round was in existence for a very short period of time.