The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores I finally had the guts to do it!!!Go | New | Find | Notify | Tools | Reply | |
one of us |
I just came back from the range, and I can officially say that I did it! I finally had the guts to set my chronograph down range just in front of my targets... Most of us set our chronographs 15 feet from the muzzle, get a velocity reading and extrapolate with some fancy computer software what our velocity should be at 100, 200 yards. All this is nice and works in theory but as we all know, B.C. does change with altitude, temperature (Alt Density). So if anyone is interested by my results, here they are. Altitude: 750 feet Temperature: 7 Degree Celsius Range: 100 Yards Caliber: 375 H&H Bullet: Barnes 270 Gr TSX Brass: W-W "Loaded 3 times" Primer: WLRM Powder: RE15: 74.0 Gr COAL: 3.570" Velocity readings taken at 100 Yards by a Competition Electronics ProChrono Digital. 10 Shot group, Average Velocity: 2380 FPS 10 shot group size was within 1.5 inches All in all, these Barnes TSX rock on paper! Cheers, Mo | ||
|
| one of us |
| |||
|
| one of us |
Thanks RIP. I edited my original post. I was shooting 270gr TSX. Thanks for noting. Mo | |||
|
one of us |
What "I need" here is the velocity at 15 feet, so one can compare what the expected velocity at 100 yards from the programs to what you measured with the chrony. Right? ------------------------------- Will Stewart / Once you've been amongst them, there is no such thing as too much gun. --------------------------------------- and, God Bless John Wayne. NRA Benefactor Member, GOA, N.A.G.R. _________________________ "Elephant and Elephant Guns" $99 shipped “Hunting Africa's Dangerous Game" $20 shipped. red.dirt.elephant@gmail.com _________________________ Hoping to wind up where elephant hunters go. | |||
|
| one of us |
Thats a real good Idea. That gives you the Actual Ft Lbs at the sight, or shell I say that I could Figure it up, Ft Lbs. I think I'll try that. | |||
|
| one of us |
 Here's a screenshot of my 375 H&H, shooting factory Remington SP 270gr ammo. You can see the difference between chronograph (Vel-13), and 100 yards away at the acoustic target, (Vel-T). A loss of about 330fps. | |||
|
| one of us |
I can't see that screen shot from this puter. Is anyone going to provide the velocity of that 270-grain TSX (and maybe the POI) at two diffferent ranges? Then the BC number could be backed into to compare to what Barnes claims.  | |||
|
| one of us |
Shhhhhhh! don't tell the buffalo, they will shudder and all die of appoplexy at such shananagans!! Ray Atkinson Atkinson Hunting Adventures 10 Ward Lane, Filer, Idaho, 83328 208-731-4120 rayatkinsonhunting@gmail.com | |||
|
| One of Us |
gutsy move! I would equate that to trying to hit a golf ball over a water hazard. I know I'll end up in the drink! Even if I was shooting 1/2" groups, I'd manage to hit at least a screen eventually. | |||
|
| Powered by Social Strata |
 | Please Wait. Your request is being processed... |
|
The Accurate Reloading Forums THE ACCURATE RELOADING.COM FORUMS Rifles Big Bores I finally had the guts to do it!!!
Visit our on-line store for AR Memorabilia