Who made trustworthy brand 12gage shotguns?

The trustworthy brand of 12-gauge shotguns you're referring to is likely made by the company Mossberg. Founded in 1919, Mossberg is known for producing reliable and affordable shotguns, including their popular 500 and 590 series. Another reputable manufacturer is Remington, which has a long-standing history in firearms production, including various models of 12-gauge shotguns. Both brands are well-regarded among hunters and sport shooters for their quality and performance.