so far from what i have seen, temper was pretty good, so i decided to run some parses and see how much varying skill levels effected my double attack rate, so i got on /scholar tempered myself up, took off any and all double attack + gear and haste gear to prevent any chance of attack speed translating to false double/tripple. and went to town on frogs for a few hours.
each test was comprised of 500~550 swings:
@ 376 skill i produced a 5.00% Double attack rate.
@ 392 Skill i produced a 6.20% Double attack rate.
@ 402 Skill i produced a 7.09% double attack rate.
@ 429 skill i produced a 11.63% Double attack rate.
so from how it appears
If Enhancing skill is less then or equal to 376 you will only recieve 5% double attack with no bonus
if your enhancing skill is greater then 376 but lower then 399 you will recieve an extremely small increase in double attack rate
if your enhancing skill is over 400 you will recieve a quite noticeable increase in double attack rates.
392 skill produced roughly a .075 double attack per point of skill increase
and 429 produced a .125 double attack per point of skill. this leads me to belive that the equation is geared to change at precisely 400 enhancing magic skill
i have no way of hitting exactly 400 skill to prove this, but some creative math might support my hypothesis
anyone wana see if they can piece together an equation? ive got the first half of it figured out roughly, i just wana see if anyone else can verify this, because if it continues along this current path, we would have
im missing +10 body, +15 legs +7 neck +3 earring +3 waist +5 feet so
theoretically giving additonal .125* 43 = 5.375 (17.005%) double attack before diminishing returns.
if the B+ skill trend continues, we will recieve 8 skill for 4 levels, giving us a total of 24 more skill, and +5 more skill from the duelist tabard +2, gives us a total of 29 skill, so at 99, theoreticaly RDM will have (.125 *72) =9 (20.63%) giving rdm's temper spells a total of 20-21% double attack before diminishing returns at 99......
now looking at double attack gears:
Khanda : Double attack +10%
Chimeric Flueret : Double attack +4%
Brutal Earring : Double attack +5%
Atheling Mantle: Double attack +3%
Camlecac trousers/ tatsumaki sitagoromo: Double attack +2%
Anguinus belt: 1% double attack
Ferox Visor: +2% double attack
Royal Redingote: +2% double attack
RDM/Dualwield can get currently at level 95,
During TP in capped Haste gear: 41% double attack with no atmas.
During Weaponskills: 46% double attack with no atmas
both of these values are raw values, not factoring in diminishing returns.