Carcano

Are you using that Hoppes Plus as a patch lube for your roundball shots and using it as a range bore cleaner?

It' s difficult to sight-in in hot weather because cool weather will throw a monkey-wrench in someone' s good hot weather groupings. Next time out, try Windex to swab the bore between shots. Too much lube in a hot barrel will give you erratic groupings. Also, Wally World sell Outer Nitro Solvent in a spray can for $3.99. When you take the rifle home,. use that with a bore brush for final cleaning after the Hoppes -- then a good gun oil for storage.