Firearm Owners’ Protection Act shields those who are transporting firearms for lawful purposes from local restrictions which would otherwise prohibit passage. In short, i'll be fine if I transport firearms through NY in the same manner that's legal in Canada, so no need to re-configure my luggage at the border in either direction.Second, familiarize myself with local laws. For now, I only intend to target practice in Pennsylvania and their laws are fairly liberal, even by US standards. However, to get there I have to pass through one of the most restrictive US states (New York) and I may have to get an OK from NY State Police at the border. Fortunately, the US
Having a Pennsylvania Shooting Range Permit ($30/yr) will also help. I am examining options to get the PA Gun Permit, but that will likely require a visit to the sheriff's office in one of the non-resident friendly counties.
I recently applied for and received the New Hampshire Concealed Carry Permit. This permit is honored in 25 other states.
A clarification on concealed carry: I have no intention to wear firearms like a piece of clothing. Permit(s) just lessen my worry about variations in local laws. For example, even in places where open carry is legal (read: almost everywhere) having a firearm in your car is often considered concealed carry and can get you in serious trouble. Also, it doesn't hurt having a CCW permit when carry your gun in a holster while plinking in the countryside.
You'll notice a reoccurring theme of overkill when ensuring compliance with all applicable laws, regulations and safety procedures. I'll go out of my way and take many steps that are not strictly required to prove I'm serious about safety and follow the law beyond the proverbial "T". An extra permit or a padlock can only reduce the risk, for me and everyone in range :).