another bullistics question
 

Hi guys, I was out shooting my triumph this week and our range doesn't go further than 100yds. Got 1" groups with 100gr 777 and .45 Hornady sabots (SST). I was wondering what my ft.pounds andtrajectory would be at 150 and 200yds? Thanks very much.

RE: another bullistics question
 

.452 diameter bullet? Weight?

RE: another bullistics question
 

sorry, .50 cal firearm and Hornady .45-250gr SST sabots

RE: another bullistics question
 

Here's a great resource for ballistic info.

http://www.hornady.com/ballistics/ballistics_calculator.php

RE: another bullistics question
 

thanks for the link, but there are too many variables that I don't have access too, good tool though

RE: another bullistics question
 

Here's another one...I'm working on the exact ballistic info but this should get you very close (crossing it with the Hornady website). The big benefit here is the muzzle velocity. I match that with the SST ballistic co. (stated on their website site) and you're pretty much there.

http://www.barnesbullets.com/images/MuzzleloaderData.pdf

RE: another bullistics question
 

Final piece to the puzzle.

http://www.hodgdon.com/PDF/muzzleloading_manual_2008.pdf?CHECKBOX_1=on

RE: another bullistics question
 

much appreciated, thanks again

RE: another bullistics question
 

Ballistics Table in Yards






250 gr., .21 B.C.
www.hornady.com





Range (yards)
Muzzle
50
100
200
300
400
500

Velocity (fps)
1835
1670
1518
1261
1084
975
899

Energy (ft.-lb.)
1869
1549
1280
882
652
528
449

Trajectory (100 yd. zero)
-1.5
0.8
0.0
-13.8
-49.5
-114.2
-213.2

Come Up in MOA
-1.5
-1.6
0.0
6.6
15.7
27.3
40.7This is with 100 gr of T7 loose. Personally, I would try 110 gr or 120 gr. Those are excellent loads and produce a flatter bullet at range (200 yds). As always though, please don't attempt a shot unless you have practices that particular distance.

RE: another bullistics question
 

Sorry that table didn't copy. Here's the link.



http://www.hornady.com/cgi-bin/ball10.cgi?firearm=Rifle&desc=&wght=250&am p;coef=.21&vel=1835&sight=1.5&temp=65& amp;barom=29.53&zero=0&wspd=0&calcbutt on=Calculate

RE: another bullistics question
 

Go to this link:

http://www.sav10ml.com/pages/load_data/traj_basic_dat.html

drop in your bullet weight, BC, Zero and MV, which is
250g
BC=.21
zer0=100 yards
MV=1835

and you get:






So if you sight in at 25 for windage and zero, at 100 your dead on at 200 your 14 low, 300 your 50 inches low. Chap

RE: another bullistics question
 

According to my records I have the 250g SW with a BC of .184 not .21, if you go with a 150 yard zero you get this:







So your about 3.5" high at 100 yards and your shooting thru a 6" pipe from 0 to 175. Most MLer bullets drop off the wall at 200, you can get a Barnes 300g Spire Point 45/70 to 200 with a 3.5" high zero at 100 yards. Chap

RE: another bullistics question
 

And now go shoot it at 150 and 200 yards to see how close the math is to reality. :)

RE: another bullistics question
 

300g bullets are much better than 250g for long range shooting, better bc, less wind drift near the same drop. More energy downrange too.

Also hornadys bc's are inflated a little, if you are a couple inches high at 100, prolly bout 10" low at 200. PRACTICE, PRACTICE, PRACTICE. And dont underestimate the wind.