Good… but not good enough
Are sub-sonic cartridges powerful enough to kill pigeons cleanly? I have the chance to buy some at a very good price but don’t want to buy 1,000 or more if they’re not up to the job.
As with all compromises in life, you have to accept some pitfalls to enjoy the benefits. Sub-sonic cartridges will certainly kill pigeons out to the normal sporting ranges of 45 yards, but the lack of velocity will be reflected in your lead pictures at extreme range. I found, when I used them, that I was trying to measure lead, rather than shooting instinctively.