Every now and then someone digs out that crap from James Russell and this discussion starts all over - with the usual misinformation. Because of a quirk in the tax law, you cannot fully offset trapshooting winning with your expenses. While hobby income is reportable as "miscellaneous income" on form 1040 page 1, the expenses are only deductible as miscellaneous itemized deductions on Schedule A-itemized deductions.
So, first you have to have enough deductions to itemize, you can't take the standard deduction. Secondly, those deductions are subject to an exclusion of 2% of your adjusted gross income.
Since the deductions themselves are limited to the amount of income, the 2% exclusion means you won't be able to offset all your trapshooting winnings. (The deduction limitation is "income," not income plus the 2%. There is another category of miscellaneous deductions that isn't subject to this exclusion, but hobby income doesn't qualify for that.)
Also, you can't use Schedule C (business form) because it's generally not a business. BTW there is no requirement that you ever have to show a profit to have trapshooting considered a business. The most important factor is that you have a profit motive (not just a hope), and that recreation is not the real reason for the expenses.
If you try to handle it any other way, the IRS computer may catch it -or it may not -so if you did it wrong and didn't get caught-well that happens. You were lucky-like breaking a target with your eyes closed.
Also, expense you incur doing work for your gun club only qualify as charitable contributions if the club is a 501(c)(3)organization like the ATA. Very few clubs have that status.