hi champ
130 could be a little light , you need a bit more weight ,high ,b\c accbonds ,barnes triple \s , around 180 grains will get you out to 500 easy
kill those goats
cheers
bobgun)
Not sure of what 130 gr bullet youre talking about by I use the speer 130 gr HP #2005 in almost all of my 30 cals including 308 and they perform great on game such as Spanish Goat, Wild Boar, Mouflon and feral Sheep, Axis Deer and Wild cattle when the chance arises. I know that Tahr are stoutly built and you would have to come to your own conclusion on what to use Just putting in my $.02
Ive also used it for Red Stag,Fallow and Rusa in Australia out of a 300 WBY. shots were pretty close maybe from 150 to almost 300 yds if I remember correctly.
Although I cant remember shooting anything at 500m with it, it did great on a big axis buck @ a bit over 400 yds.
Let us know what bullet you decide on and good luck on your hunt!!!
I have used 130 gr speer hp out of a 3006 on goats and it was truely devastating. It did manage to get in on big billy goats at close range. I am not sure how they would go at 500 yds though, wind i think would be the big problem.
I did manage to shoot some goats at an estimated 300 yds once (before I had a rangefinder) and it certainly knocked them over.
I am not sure how a 130 gr bullet would go on a big bull tahr at 500yds though.
Run the data through a ballistic programme and see how it would compare to something like a 150 gr accubond. My gut feeling is by 500yds the 150 gr would be better in terms of less wind drift and more energy, but the 130 gr might win out to 300yds because of the higher velocity.