I can't see 1.905 in the table, though there is a 1.0905 and a 1.995.
The table is updated each month. When you hit 55 on the 75 scheme your pension will have that uplift applied. The following year it will be increased by the new updated figure, so you will get a big lift at 55 and then small ones each year. Mine went up by almost 50% because I'd had 13 years' worth of inflation to catch up on.
If you think yours is going to double you must have left in about 1991.
You know what rumour control is like . I left in 2011 (June) so rumours are not correct. I've got 7 years to wait, not really bothered about it just a little speculation. Plenty of heating systems to fit and boilers to repair , which unfortunately makes a laughing stock of a Warrant Officers salary. Never mind I enjoyed my time that's for sure.
Well, you have to guess how inflation is going to run over the next 7 years. Your 3 years out is currently worth about +10%.
As a guide, go back 10 years and you'll see the uplift for a decade out is in the order of 35%, but there's no saying how future inflation is going to pan out. Just look at the updated table each year you have a birthday cake.
(As an aside, the system forget when I reached 55, despite having had records of my age since 1975, and I was obliged to remind them.)
I had a letter saying my pension was to be taxed, phoned up pension people and told HMRC made a mistake and to ignore it, in the same envelope I am told my tax code has changed to K262 not a happy chap