The Mudcat Café TM
Thread #130146   Message #2927033
Posted By: Rapparee
13-Jun-10 - 05:54 PM
Thread Name: BS: Shooting enthusiasts only
Subject: RE: BS: Shooting enthusiasts only
Kendall? Air rifles have changed somewhat since you put down your Red Ryder. My air rifle will do up to 1,200 fps and that scope is 4 to 12 power x 40mm. 200 yards isn't much -- I could, with practice, hit a target at 300 yards. Here's some stuff from Robert Beeman, of the company that makes Beeman air guns:

To get some perspective on airgun velocities, consider the muzzle velocities of some well-known guns: A typical "BB" gun imparts about 250 to 350 fps to a light (about 5 grains [0.32 grams]}, .174" (4.4 mm) steel ball. A .22" ( 5.5 mm) rimfire cartridge rifle has a regular-speed muzzle velocity of about 1025 to 1145 fps. Ten pumps in a Daisy Powerline 880 or Crosman Powermaster 760 BB/pellet pneumatic will fire pellets at about 570 to 670 fps. Ten pumps in a Benjamin M342 .22 caliber air rifle, produces about 640 fps. Ten pumps gives about 605 fps in the .177" Crosman 1400 or 695 fps in the .20" Sheridan air rifle. The muzzle velocity of a Beeman R-1 air rifle ranges about 590 to over 1100 fps, depending on model and caliber. A .38" Special (9 mm) firearm or .45" (11.4 mm) ACP firearm wadcutter bullet moves at about 770 fps muzzle velocity, but is extremely dangerous due to its great weight. In terms of the more familiar miles per hour, the BB gun sends out its projectile at about 170 miles per hour, while a top level adult air rifle will rush its projectile out at over 750 miles per hour. Plaintiff lawyers in airgun cases often dwell on the velocity of airguns as a measure of their danger. However, one must temper any considerations of velocity with the mass of the moving object; obviously most of us would choose being hit with a BB at 170 miles per hour rather than by an automobile, or even a hard baseball, going "only" 60 miles per hour!

However -- shooting a .177 pellet at more than 1080 fps (speed of sound) will cause the lightweight pellet to yaw and lose a LOT of accuracy. And while muzzle velocity might be 1000 fps, after about 35 yards the pellet starts to drop -- at 300 yards I'd probably have to compensate for around 100 inches of pellet drop.

Yeah it can be done. I'm not gonna try it, though. I could easily do it with a rifle, I'm okay out to about 300 meters with a properly zeroed rifle, using open sights; I've never tried it with a scoped rifle.

But then again, we only saw a couple or three shots in that video and we have no idea of the size of the actual target. I could tape up a piece of 6 x 6 foot paper and select the best group!

Basically, I'm saying that it can be done, but I'd like to see it verified by me personally or someone I can trust.

(Max range on my Ruger air rifle, by the way, is supposed to 575 yards.)