Proper lubrication is always a good idea when metal rubs against metal, but it won't reduce your effort by 25%
You can reduce some of the bolt lift effort by really polishing any surfaces that rub, especially the cocking ramp and the shaft of the cocking pin. Polishing the sides of the various parts of the trigger where they rub will help as well. Make sure the sides of your sear are not bent so that they produce extra friction when resetting the sear as you lift the bolt handle.
A longer bolt handle (home made extention) will also help with the apparent force required to lift the bolt.
A timing job by Fred ("Sharpshooter" on the forum) will make things easier, but I am not sure what your budget is.
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