Let's suppose a character buys a Twin-Linked weapon whose rate of fire without the Twin-Linked trait is S/2/5. In Ascension on page 137 it is said that a Twin-Linked weapon "uses twice as much ammunition. In addition, the weapon may score an additional hit if the attack roll succeeds by two or more degrees of success."

So on single fire, maximum two hits are possible. But what about Semi-Auto and Full Auto?

Firing the S/2/5 weapon on Semi-Auto, can the character hit with a maximum of 3 bullets (2 from the original rate of Semi-Auto +1 from the Twin-Linked) out of 4 fired ("uses twice as much ammunition") and one bullet is destined to fly away without hitting anything? Or is the maximum possible hits 4, since each one of those 4 bullets fired can hit their target if the dice roll is good enough?

Same with Full Auto when 10 bullets are fired with the Twin-Linked weapon. Can all 10 hit if the dice roll is good enough, or is the character limited to a maximum 6 hits (5 from original rate of fire + 1 from Twin-Linked) and 4 bullets are destined to miss their target?

normal s/2/5 -> 1 / 1,2 / 1,2,3,4,5 hits

twin linked s/2/5 -> 2 / 2,4 / 2,4,6,8,10 hits

twin linked doubles ammo need and doubles number of hits

(triple linked and quadruple linked would do likewise)

twin linked short burst does generate 2 htis on a standard hit and 2 hits on 1 extra success but 4 hits on 2 extra successes

twin linked large burst does generate 2 hits on a standard hit 4 hits on 1 extra success and 6 hits on 2 extra successes

you can hit a maximum of 1hit/1bullet, sicne your 5-long burst consumes 10 bullets it can hit 10 times

no no no, thats Storm.

Twin linked most definitely does not double the number of hits.

The key line is

"the weapon may score one additional hit if the attack roll succeeds by two or more degrees of success."

so your 1/2/5 weapon

SS: 1 hit, or two on 2DoS

SA: 1 hit, or three on 2DoS

FA: 1 hit per DoS(inc zero), plus an additional on 2DoS+, to a max of 6 total.

my bad... he is right