The referenced post was sinking to FB oblivion. Direct link.
Full text posted here in case FB disappears it later, AAV agrees 100% with Montana Overland on this:
"OFF-ROAD 201: WHY NOT USE A CHAIN?
We have often posted: "DON'T use chain for snatching recovery." However, we seldom fully explain why a chain is a poor choice. Let's see if I can clear this up a little.
First, we must touch on the term, "Best-Practice".
A Best-Practice is a way of doing something that produces superior results to those achieved by other means. It does not mean other ways never work, but it is the way that gives the best results in most circumstances. In our case, we want to use best practices that produce the safest, surest way of getting the job done.
Not being Best-Practice, or even close to one, is why we can't recommend the use of a chain in bogged vehicle recoveries. It is not that a chain can never be used to successfully pull a bogged vehicle out of a hole. We all know that we can use a chain, now I will try to explain why we shouldn't.
Some reasons using a chain is not "Best-Practice":
1. Strength. What is the minimum breaking strength of YOUR chain? Do you have any idea? Most people don't. Not knowing if your recovery equipment is up to the task is needlessly allowing dangers that simply don't need to be part of this process. Chains, even those the same physical size, come in several grades/strengths which are often not easily identifiable visually. What grade your chain is, can make a substantial difference. For example, a 5/16" Grade 30 chain has a minimum breaking strength (MBS) of just 7600 pounds. The same size chain, but in a Grade 80 rating, has a breaking strength of 18,800 pounds. That alone could be the difference between a successful tug and a broken chain. In comparison, most snatch straps are rated at either 20,000 or 30,000 pounds MBS. Even if you know the grade and strength of your chain, there are other reasons not to use it. Read on.
2. Weight matters. My recovery kit includes both a 30,000-pound snatch strap and a 33,000-pound kinetic rope, but I suspect it is more common to have a 20,000-pound recovery strap. To get close to, even this lower Minimum Breaking Strength, we would need to use at least a 3/8", Grade 70 chain which would have an MBS of 18,800 pounds. That chain will weigh about 1 pound per foot. So a 30-foot length will be about 30 pounds. A chain closer to the 30,000-pound MBS of my strap would require a 7/16", grade 70 chain weighing more than 40 pounds for 30 feet. In comparison, my 30K strap weighs about 8 pounds and it rolls up neatly for storage.
3. A chain is harder to secure for recovery. Standard chain hooks do not secure the chain well enough for uses where the chain may go between tension and slack several times in the course of a bogged-rig recovery. Simply, hooks make for an unsafe situation during the recovery of a bogged rig.
4. SHOCK: So, you ate your Wheaties and dug out your 40-pound, recovery chain and are confident that your chain hooks will somehow magically stay in place for the duration of the recovery. But, is there enough traction for the recovering vehicle so that it can slowly take up the slack and then recover without shock-loading that chain? If not, you should not be using a chain. This is important because the chain has ZERO elasticity and the entire impact of a running start will, , when you come to the end of that chain, be experienced, by both the vehicles and their occupants. You will be much more likely to experience damage to one or both vehicles in any situation where you need a running start and use a chain. If you still cannot quite picture how the lack of elasticity can cause damage, think of it this way: If you were going bungee jumping off a high bridge ( jumping off a low bridge has its own hazards...lol, sorry, I digress ), what do you think would happen to you if that stretchy bungee cord was replaced with a chain? Ouch!! That impact would not do your 4x4 any good either.
So, in this case, using the "Best-Practice" means we are better off with a true recovery strap or rope that has some stretch, can be fully secured, takes up less space, weighs much less, and is considerably less likely to cause damage to the involved vehicles, with normal use. In other words, using a strap that is DESIGNED for recovery is...wait for it...Best-Practice.
Make no mistake, a chain has its place. Chain's resistance to abrasion means it can be ideal for dragging objects like rocks or logs out of the trail. These jobs could quickly destroy a strap or rope and don't (or shouldn't) normally cause shock-loads on the chain. Chain's lack of elasticity also makes it better for jobs like using a Hi-Lift Jack to winch yourself out of a jam.
I am not saying that a chain can never be used for recovery. I "AM" saying it is a poor choice for the job and far less safe than using properly rated recovery gear. In other words, using it is not even close to being a "Best-Practice" and can be quite a dangerous practice.
Now, hopefully, you know a little more of why a chain is a very poor and dangerous choice for bogged vehicle recovery."