Yes, I have seen an improvement in accuracy due to how it's used.

When standing it's really impossible to tell the difference. However, I did notice a slight improvement when bench rested. If I placed the bag/support right up against the magwell, the accuracy is the same. However, if you place the bag/support out closer to the muzzle, the POI can change.

If you only support your gun to get a good zero, just place the support close to the magwell and you'll be fine. However, if you ever intend to use a support like a bag or bipod, go for the free float. Placing the support closer to the muzzle helps with holding the gun steady.

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