tominohio
For me, the first shot out of any of my ML's could/can be off some where. I do not even count on the first shot, assuming the first shot is on clean barrel. I always shoot on a fouled barrel, running a damp patch between shots is not shooting on clean barrel, there is always some fouling left in the barrel.
When shooting at the range or target shooting - I will pop a few caps to clear the BP and somewhat fould the bore. I then take a almost dry windex patch run that through the barrel to distrute the fouling and somewhat clean the bore. Then I will load up a charge and a projectile and shoot that not counting on it to be totally accurate - it will be close but not close enough. From that shot on everything will be right where it will be during hunting season - including the bore.
Now, I shoot T7, so I can get away with this if you are shooting BP or the Pyro's, I could not recommend this. I take the rifle I plan on using for a portion or all of the season and I head to the woods - i will shoot 3/5 rounds form to verify accuracy and then I will field clean the bore with windex patches and then really lightly oil the barrel - then run a couple of dry patches to get as much oil back out as can - but yet still have bore protection. The bore/gun remain in this condition for the rest of the season - I should amend - that it might even leave it loaded for several weeks.
I know the rules are T7 will eat your barrel out and you should always shoot an oil free bore - and these are good rules - but the windex neutralizes the T7 residue and the oil protects the bore during the season... but remeber it is a very wery light coat of oil..
Just my 2 cents