Not sure if this adds anything useful - in a direct comparison of 100gr, 110gr and 120gr points, all in the same length 410 shafts shot at 70m off a 46lb Helix 31.75" total length with tungstens and Beiter 4.5mm overfits (weaker).
The 110 were grouping tight in the 10 ring and middle 9, the 100 gr were overlapping the group but with centre of group at the top of ten, the 120gr were low 9. The main failing of the test was that I didn't retune nocking pt for each arrow (I'm lazy)
FWIW the 100/110gr pattern was exactly the same as I'd found a few years previously in an Aerotec C+ setup.
Maybe I'm misunderstanding (I'm scanning the thread) but I would strongly hesitate before cutting 1" off the back of an X10 for recurve. I was told (by GT) that 1/2" off the back is roughly equivalent to 1" off the front ie one full spine. My experiments showed that 1/8" off the back made a visible difference (sorry I can't honestly remember how far it was 1997!) I expect that taking 1/8" off the back of a 450 will give me about a 440. (I'm only shooting 44# and the 410 is stiff)
But the real reason for shooting Tungsten points is that they look cool
Stretch