As far as I know neither Lapua or Norma make brass for the Ultras yet, one or both of them do however make brass for the 300wsm.
My dad has a 300wsm and is getting 3250-70 fps with a 180 Ballistic Silvertip and 178 A-Max and just barely over max load at 65-67k psi on the Oehler. It's only a 27.8" tube as well.
My 300 Ultra is getting the same velocity at the same pressure with a 26" tube, you be the judge, I'm using 95gr and he's using 72gr to do it too. I could gain 50-100 fps if it was at his length, maybe, maybe more if it 32 or better. Something to consider being as you can get good cases for it.
He is at max powder capacity in this case and it appears to be burning most of it so how much can be gained by the extra length at 32 or more might remain to be seen, the 300 Ultra will make use of the extra length for sure.
You were the first of three people in just a few hours to try to break my heart. Just before I started this thread, I was looking at Sinclair's website. I would have sworn I saw 300 UM brass made by Lapua for $89/100 It must have been a dream, I spent the last couple of hours searching for it, but all I can find is the Remington Brass.
Now I'm rethinking the entire project. Half MOA out to 1000 yards isn't going to cut it for what I want to do. I need tighter than that, or there isn't any reason to build the rifle.
If I can kill that coyote from here, Will you walk out to get him?
Tim, Don't mean to throw cold water on your idea but I don't think you are going to achieve the results you want.
First off, I think that your accuracy requirements are going to be pretty tough. If you look at 1000yd BR results in any calibre, most groups are in the 1/2 MOA range. That is under controlled conditions and wind flags. Backstops tend not to move either.
In the field, that will not be the case. Making a rifle capable of under 1/2MOA mechanical accuracy is a no brainer. Being able to shoot that is the problem. At the extended ranges you are looking for, one shot hits on such a small target are going to be more a question of statistical luck. Sort of like shooting a PD at 2 miles. Lob enough lead at the thing and you are going to hit it. Repeatable, predictable - no way.
Look at the smaller calibres like the 6, and 6.5 (maybe even the 7mm). There are now excellent VLD bullets that have BC very close to the 30 cals. The big difference is that with the smaller calibres, you can go much faster.
Wind drift is probably your biggest problem. Getting the bullet there faster will make a difference. Coyotes tend to not stand in one spot for very long.
Consider muzzle vel over 3300fps and see how much that reduces wind drift. If the bullets will stay together, going 3500fps is possible. Barrel life will suck but I don't think that is the point of this excercise.
Wildcats like the 6.5STW or 6WSM may be the answer.
The interest in the heavy big cal bullets is the performance on big game at extreme ranges. If going after smaller game, they give very little advantage.
Maybe looking at your goals from a different angle will give you a solution.
Sorry, I was actually hoping you found they had the stuff, damn...
I think Jerry has a pretty good view of things there.
If Lapua had brass for the Ultra yet I'd hope we'd find out real quick.
I never heard anyone mention you could get Norma brass for the 300wsm, but not many people around here use one though.
It sounds like we're looking for about the same thing in a LR rifle. [img]images/icons/smile.gif[/img]
One thing we can sure definitely agree on, the coyotes don't hold still for very long. I'm lucky to get one shot over 300 yards every third time I go out. I'm not to worried about wind however. One of the great things about the valley I live in, is that for 10 months a year, there is virtually no wind the first couple of hours of daylight each day. Which fortunately coincides with the time of day my range finder works the best.
Once I spot one and get him ranged and the elevation added to the scope, I can usually get him to stop for a few seconds with a bark or howl. But if I miss, he's off and running. The only time I ever get a second shot is if I hit a little far back and put one into the "spin cycle"
I think I'm still going to have the rifle built. Just lower my expectations a little. Maybe if I tinker with it long enough, I'll end up with a nice surprise.