I am not a good enough judge of antelope behavior to have taken the first shot.
Shooting a 240 Wby at about 3275 fps and a BC of 0.595, I have a full second of travel time to a 1000 yards. I like my antelope to be good and still and to be in a "behavior pattern" that lets me know it will stay put while the bullet is in the air. Being from the east I do not get to spend a lot of time studying behavior of antelope so I have to be more careful than other people. Of course, I also miss a lot even when they are still because the wind drives me crazy.
Thompson Long Range. They have a long range shooting school (in Utah i believe) that they advertise in hunting mags. They've been around for a while. I called them a couple years ago when i first saw the ad, they shoot .30-378's accumarks with a varmint style stock and used the Premier Reticle dots when i talked to him. I don't know if they still use them after the whole fallout with Leupold. He sent me a 12 minute DVD back then that was very impressive - several kill shots over the 800 yard mark. I can't for the life of me remeber what bullet they were using although he told me. They don't do as much as the Best of the West guys as far as smithing or anything to my knowledge, they just have a system they like and seem pretty successful with it. Their school consists of you taking a new accumark out of the box, install a scope, go over some basic reloading and ballistics, and hit the range. 2 day deal. I didn't like that fact that the scope was already set-up and you basically started with their "pet load" and tinkered with it to get the velocity to match the dots. Seemed to me that finding what the gun liked first and then doing your dots was a better way to go, but just my opinion. This was all when i spoke with him a couple years back so it may be different now. Real nice guy, seemed knowledgeable. I think they have a full length video out now.
Sundevil, no sane person does the kind of stuff I do. Secondly, I do not own a chronograph so I just tell whatever lie is convenient at the moment about bullet speed.
I have a 30 inch Spencer 1-8 twist barrel. A minimum SAAMI chamber with a match leade and no freebore. The action is trued and tight. I shoot 115 Bergers jammed hard with 51.0 grains of RL 22 and Fed 210 GM. This will ruin a piece of brass and on 90 degree days if the rifle and ammo are in the sun you will have to hammer the bolt open and the primer will fall out into the action. But it will cut through an antelope at 1K like a knife through hot butter. You would not believe the exit holes it makes. It will go through a big hog like it wasn't even there.
The Sierra 105 MKs have a tougher jacket and pressure goes up faster than the Bergers so you cannot get the same speed out of them.
Predicted barrel life is about 400 rounds, but the rifle is so great I don't care. It weighs about 18 pounds and is like a bag of cement just laying there waiting for you to pull the trigger.
I simply remind you that this is an extreme pressure load and not to be taken lightly. On hot days things go bad in a hurry and I have personally been there and done that and don't need to do it again.
I use holdover dots and a sporter rifle. Does that mean I am not credible, or just incredible ;) ???
They DO it, apparently without using a $4k custom 32" bbl rig so popular here, and I applaud them. And I think they are on the vid or selling the 4 dvd set for 99.00 of LRH and how to do it( I hope it aint a Huskemaw ad).
It seems like LRH is to the point now where we need a network TV Show, our own specialty magazine, and a dvd production company.