I can understand the frustration, but does the new SI not specifically addresses the issue of magazine capacity:
firearms which are designed for use with 0.22 inch long rifle rim fire percussion ammunition and use magazines that have been manufactured or modified prior to use so as to accommodate no more than five rounds of ammunition
So the excuse that used to be trotted out about the extra cylinder being plugged as NOT being sufficient should (and i say should as the SI addresses magazine, but in the case of a revolver the cylinder is the mag) be now moot or at the least clarified enough to put up a reasonable defence as to it's legitimacy.
I've spoken to a good few people since the release of the SI and a couple have brought up this issue of us not getting the "6th round". However we were never going to get it. The objective in this whole process was to retain what we had, clarify the some troublesome aspects of how the law was implemented and i think all in all we done that.
Now was not the time to try and change the law or seek to have previous SI's abolished or amended. I'm not saying it should not be done, but at a time when we thought we might loose a lot more the focus was on trying to keep what we had more than get something back. For example if we lost pistols altogether, lost semi auots altogether, and lost or had all semi auto shotguns restricted then what importance would be on whether revolvers could have 6 instead of 5.
It's not capitulation. It's knowing which battles to fight and when. In the next two years, assuming FG get back into power, we're going to be facing into another Act or even a rewrite of all the firearms acts. Between now and then, especially with the reintroduction of the FCP, is the time to address this and other issues.