Not a church service, but I attended a church wedding.
Pastor gave a sermon as is tradition during a church wedding. Every minute or so, he somehow managed to work in "and since you are in a place of God, you should not disrespect the bride and groom or our worshippers by using your phones".
Bitch, I'm here to support my friend who's getting married, not your church or your worshippers. I know for a fact that my friend chose to get married in the church because it's cheaper, not because she's super religious. Also I'm agnostic and haven't read the Bible, but I'm pretty sure it doesn't say "thou shalt not use mobile phones in churches".
I very pointedly had my phone out for his entire sermon out of spite
Hunting and precision shooting is different. Not to mention air powered guns are very different from gunpowder based firearms.
Look, I'm not the right person you should be arguing this with - there isn't anything else I can say to convince you, except to say that the international world of shooting has accepted that corrective glasses don't confer an unfair advantage in competition. If you're really interested, find your local gun club, see if they have any air pistol events, try it out, ask the club director about the rules.