The way I’m reading your reply that vertical stringing is more of a problem at low subsonic velocities. I’m aware of the need for low velocity variations, ES, to prevent vertical stringing. Ĭhill, I was not aware of vertical displace of hits at low velocities. Higher velocity = better high/lows and more wind drift.īoy, I hope I don't regret stepping into this. lower velocity = less wind drift and greater high/lows. There are trade-offs in that to get much better high - low impacts on target at long range (BPCR) a little wind reading is called for. In the case of very high quality 22 match ammo, very narrow velocity spreads address that and 200 meter groups can be very good.ĭon is right. As you slow the MV down, we start to see greater elevation spread on the target at distance. BUT, as pointed out, there are trade-offs. Yes, you are correct, bullets with MV < 1100 fps have less drift than the same bullet in the 1100 to about 1500 fps range. This is often overlooked in these conversations. Which is not to say it can not be again but I will keep my part short.īc is Bc. IN the last 20 years this has been beat around endlessly. This subject requires lots and lots of text to cover I'm not up for that. Run the numbers in a ballistic calculator.įlatsguide, you are correct in that a bullet of any size and weight adheres to the same laws of physics. I went to the rifle because I knew it would preform better, but it ended up being worse in the wind drift department. I've found this out when I went from a 357mag pistol to a 44mag rifle for deer hunting I could not understand why wind drift was easier with the pistol, until I ran the numbers. Even if I can get to 1500fps, it drifts more. That I why I keep all my handgun bullets at 1050fps or lower. Wind drift refers to the force of the wind acting upon the bullet in flight.Drag is greater when the bullet is supersonic, and drag is a function of wind drift. So, you're not exactly wrong but you may be using the term "wind drift" incorrectly. Wind drift refers to the force of the wind acting upon the bullet in flight. However, if the slower projectile is more stable in flight and the wind is constant (or the shooter is very skilled at adjusting for wind deflection) the projectile may still land where you want it to land. The slower projectile will be in flight to the target longer than a faster projectile travelling the same distance and the wind will have MORE time to act upon the slower projectile. The advantage of starting with a subsonic velocity is that the bullet never transitions from supersonic to subsonic because it was never supersonic to start with. The longer a crosswind has to act on the bullet, the greater the distance it will deflect the bullet's path. Wind drift is the force of the wind pushing on the projectile in flight. The transonic loss of stability isn't absolutely tied to the effects of wind on the bullet. 22LR projectiles that start out supersonic and then transition to subsonic speeds before reaching the target, often exhibit larger groups - BUT that's not necessarily a result of wind drift. 22 LR loads that drift the most are the highest velocity loadings." is not completely true. 22LR subsonic loading has significantly less wind drift that the same bullets flying above the speed of sound and the. I think you're starting with a false premise.
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