You bid for more than half of the total subscription in HNI category for SME, you get into lottery as the ratio of number of lots you bid to total subscription can be anywhere between 0.5 to 1, thats rounded off to 1, which means 1 lot confirmed allotment.
There have been cases where this ratio has been 0.46 or less than 0.5 and still allotment was received but that is rare and depends upon quite handful of other factors.
As you said if HNI is 500x and you bid 200 lots, and if you are the only bidder for 200 lots, then you are not part of lottery and hence no allotment is received. If there is another bidder for 200 lots, then total bid by both of you is 400 lots out of 500x, so that goes into lottery and 1 out of the 2 gets allotment
In case of 260 lots, not certain but almost confirmed allotment if you are the sole bidder.
49/500 is 0.098 which is less than 0.5, so in case of no other bidders, that lot does not go to lottery, given the total subs was 500x. You need sufficient number of bidders in 49 lot category to make the ratio 0.5 and be eligible for lottery.
@Anuwak