Campbery

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.

Underclocked

.452 diameter bullet? Weight?

Campbery

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

Hammer49

Here's a great resource for ballistic info.

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

Campbery

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

Hammer49

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

Hammer49

Final piece to the puzzle.

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

Campbery

much appreciated, thanks again

Hammer49

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.

Hammer49

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