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I would use 10% less 3F powder rather than 10% more 2F powder.
Unless the 2F powder proves to be more accurate.
There's .54 max. charges in the manual of up to 120 grains of 2F, for only one single projectile.
Otherwise its generally 110 grains of powder.
What matters most is whether the first shot out of a cold clean barrel will hit the target.
The 3F should burn cleaner and with less chance of a hangfire or misfire.
The trick is to make sure that the bore is absolutely clean and dry before you load it for hunting.
Some folks use #11 magnum caps for a little extra ignition boost for hunting.
But make sure that they will fit tight enough on the nipple to not fall off because they have more primer compound in them.
Lubed patches. But I would only use a dry wool wad underneath when hunting because it may stay in the bore in contact with the powder for a week or 10 days.
A rifle nipple wrench that fits #11 nipples, and not a musket wrench or a revolver wrench.
A single shot pistol wrench and a rifle wrench are basically the same.
No. The sprue goes on top in the northern hemisphere, so you can visibly check that it's centered and it remains consistent when loading every time.
Don't let the deer know that.
And don't be afraid to use the 2F powder because it may be more accurate, but then be sure to try it with the #11 magnum caps for reliability.
Good luck and show us your deer or post a new thread with photos of some test targets or something.
Our advice isn't totally free.