20 September 2009, 21:36
Enigma200 Yards Range Report
Hello fellow members,I wished to share some information observed the other day at the range while preparing my rifle for the upcoming deer and moose season. The improvised range was an abandoned gravel pit. The distance was 200 yards. My rifle rest was set over the tailgate of my pickup. Wind conditions were calm, sunny, and the temperature was 17 degrees Celsius or 63 Fahrenheit. The purpose of this outing was to verify the actual velocity of the bullet at 200 yards, compared with computed velocity... To do so, I setup my chronograph at 200 yards, just in front of the target. I elected to shoot two rounds, and run down to check if my chronograph was still intact...
When I discovered everything was intact, I elected to shoot 8 more shots. All 10 shots were kept within 2 inches. Good enough for hunting moose
Ok, so following are the details.Chronograph: ProChrono Digital Chronograph
Rifle: Winchester Classsic Stainless
Caliber: 375 H&H
Scope: Bushnell Elite 3200 2X7
Rings/Bases: Leupold Steel Rings/Bases
Brass: W-W
Primer: WLRM
Powder: Reloader 15
Projectile: Barnes 270Gr TSX
C.O.A.L. 3.570
Crimped with Lee Factory Crimp
The rifle was allowed to cool off after every 2 to 3 shots for about 5 minutes.
The results are as follows. Out of 10 rounds fired through the screens, only 8 Registered.
The average velocity for the 8 shot group was 2248 FPS. Now I know from chronographing that load that the actual velocity at the muzzle for this load is between 2745 FPS and 2760 FPS depending on temperature. Following is a chart computed with Barnes given S.D. for that particular bullet.
Load Data
~~~~~~~~~
Name: .375 Cal, Barnes TSX, 270 grn
Ballistic Coeff: 0.326
Bullet Weight: 270
Velocity: 2750
Target Distance: 150
Scope Height: 1.500
Temperature: 63
Altitude: 850
Ballistic Data
~~~~~~~~~~~~~~~
Range Elevation Velocity Energy
0 yds -1.50 in 2750 fps 4533 fpe
25 yds -0.44 in 2683 fps 4314 fpe
50 yds 0.31 in 2617 fps 4104 fpe
75 yds 0.74 in 2551 fps 3902 fpe
100 yds 0.85 in 2487 fps 3707 fpe
125 yds 0.61 in 2423 fps 3520 fpe
150 yds 0.00 in 2361 fps 3341 fpe
175 yds -1.01 in 2299 fps 3169 fpe
200 yds -2.44 in 2239 fps 3004 fpe
225 yds -4.31 in 2179 fps 2846 fpe
250 yds -6.63 in 2120 fps 2694 fpe
275 yds -9.41 in 2062 fps 2549 fpe
300 yds -12.68 in 2005 fps 2409 fpe
As one can tell, its bang on!!! So here you have it... Nothing scientific, just me having a great afternoon at the range. It sure was nice to discover that Barnes published information is BANG ON!!! So are their bullets for that matter lol. Sorry for the pictures, the camera was left at home....
