Originally Posted by
CalmlyDeMented
Ok, that does sound like a bit much. I had to look into this a bit more since I was remembering it as more. I dug up target pics from either Nationals this year or the practice before Nationals. We were shooting through barricade ports and putting a lot of bodyweight on the guns to stabilize our position as much as possible. It was moving the impact 3-4 inches at 100 yards.
These pictures aren't mine, they are from my teammate that won the match. So, I was off, maybe an inch or close to that at 25 yards is possible. Crappy guns, medicore ammo, and imperfect shooters add a lot of variables.
I have my work upper here, I might try to run some tests and see how much it actually does affect it. Maybe hanging weight from the barrel or handguard?
Also, Mk18 and other short stiff barrels are much less susceptible compared to a 20" A4. From what I've read, people say it doesn't matter if you free float or not on shorties.