How to properly mount my new Lee Classic Turret on my New Bench

[REL1203]

OK, so all day yesterday in the 102 degree weather the DC region had, i built my new 2x4 Basic's Kit bench (my size is 6.5'x2.5'). What i ended up doing is following the advice of a few people on here and instead of doing the one horizontal 2x4 under the top layed, i used 2x6 and braced it ever few inches, and doubled on on the corners where the mount is going to go. Just like this pic below


It came out STURDY as hell, just as I had hoped. Now my question is this. The directions say to mount the press with 1/4" or 5/16" Bolts. Its my understand that a bolt is a long rod that you use a nut/washer combo on at the end to tighten it, usually pre-drilling the hole, OK, I think, not a problem. The way you mount the Lee Classic Turret press is it has a 3 hole mount, in a triangle configuration, with 2 being closer to the user, and one last one on the far side. The 2 that are closer to the user, those seem to mount like an inch or so from the edge of the table, which has the MDF tabletop (3/4"), and then the 2x4 front support under it, so to get a nut and washer I would have to drill the 3/4" and then the 4" of the 2x4, plus the distance above the table of the press and then still get a nut on it... That doesnt seem right....

I am supposed to just use what I call a Lag Screw, maybe some call it a Lag Bolt I guess, where its just a big heavy duty screw basically and uses the force from going into the wood to hold it into place? If so, how long of screws should I use (how much needs to go into the wood)?

Here is another example of what I have with a press

 

[RustyFN]

I would use a lag bolt that is at least 3". That should be enough to get through the press base, plywood and most of the 2x4.

 

[Tilos]

Nice bench.

Lag bolts will work for the 2 holes that are close to the edge, but a bolt with a nut for the 3rd rear bolt if the press has one.
Predrill pilot holes for the lag bolts to avoid splitting the on-edge 2x4 for the 2 front lags.

Another way would be to use threaded rod cut to the length needed to go through the top and front, on-edge 2x4, with nuts both top and bottom.

 

[Sport45]

Another way would be to use threaded rod cut to the length needed to go through the top and front, on-edge 2x4, with nuts both top and bottom.

That's the way I bolt all my presses to my workbench. I have pre-drilled holes and mount the press when I want to use it. The back bolt(s) goes through the 2x6 top and the 4x4 frame. The front bolts go only through a 2x6. I tried using lag bolts. They worked for a while, but frequent tightening took its toll on the wood and I wound up needing through-bolts.

My workbench has 4 legs made of landscape timbers, a bottom shelf is framed with 2x4's inset into the timbers and topped with 3/4" plywood. The top is framed out of treated 4x4's inset into the timbers and is topped with 2x6 and 2x4 lumber running lengthwise. I built it from leftovers of a deck project to use in my garage for engine work. It's heavy and doesn't move when used as a reloading bench.