ramgunner wrote:
As has been mentioned, the floor loading is going to be prohibitive, Even if it wasn't, the weight distribution would really throw things off unless placed directly on the centerline.
Your best security needs to start with OPSEC. No NRA or other bumper stickers or logos on your tow vehicle or toy hauler. Get some generic cases that can be used to take them from the trailer to the truck - an instrument case might even be a good choice. If people don't know they are there, they don't know the payoff potential of your trailer. They prefer knowing their effort will be worth something.
Do you have an alarm system on the entry doors to your RV? Something loud enough to attract attention. I'd also recommend looking at the windows in the garage, as well as the ramp door.
Of course, make sure you always use the deadbolt on the doors when you leave. Bad guys don't like to have to take a lot of time to get in, especially if the payoff is questionable. Anything that makes them spend more time getting in makes your trailer less of a target.
Do you have any lights under the trailer? I mention that because they will cause anyone messing around your trailer to appear in silhouette - meaning that they will really stand out. Bad guys don't want to be seen. We have some downward-facing blue LED's under ours that don't intrude on other campsites, but add this element of security.
All of the above combine to make your trailer less attractive to someone, make it take longer to get into, and then really attract attention if they breach the physical security layer.
In an RV, given the floor loading and other concerns, having them concealed is your best bet. Does the toy hauler have a compartment under the floor in the garage? Does the bed flip up? Is there a closet? Is there a concealment method available for storing them?
If you really want to put in a "safe", I'd consider one of the green, lightweight Stack-On cabinets https://www.amazon.com/Stack-GCDG-9216-Convertible-Double-Door-Security/dp/B002TOKR3U/ref=sr_1_33/166-4258620-1584413?s=hunting-fishing&ie=UTF8&qid=1477072430&sr=1-33&refinements=p_4%3AStack-On . They can be bolted down, and will take a bit of effort to open. Combined with all of the previous elements, they most likely won't want to stick around long enough to breach that secondary physical layer.
That's about the best you can do in a trailer.
OPSEC is good. Already thought about all that. Incorporating it in as well. Hiding is bad idea. Laws require firearms to be locked away from children. I don't have any, but children occasionally tag along when friends with kids visit.Trigger locks are acceptable by law, but If I'm going to that much trouble, then I'd rather they be securely locked up, not just inoperable.Lights under the RV, I have not considered. Good idea. Storing firearms in storage under RV would turn them into rusty scrap metal, unless I spent lots of time re-lubing.
I do have a Stack on cabinet like the one in your link also. I thought about using it.