Seismic Sam wrote:I use a Lyman turret press, and have been loading my .338 RUM on it and getting down to 3/8' 4 shot groups at 100 yards on my best day. It doesn't matter how tight the press is - what matters is how good the dies are. So forget the press, that isn't the issue.
My only concern is how much play the turret has on the stud it's mounted on. It rocks pretty good when FL sizing. IMO, if the die is rocking with the turret, then it isn't concentric to the axis of the ram. I'll have to check it with a dial indicator to see how much play I have before I put some cash on a new press.
To begin with there is a damned if you do and a damned if you don't decision. Ballistically, the 338 RUM and Lapua perform equally, and both drive the big Sierra 300 grain Matchking at 2750 FPS. Don't let the larger case size and reputation of the .338 Lapua make you think otherwise. As far as brass, Lapua has better brass, but it's a LOT more expensive. 338 RUM cases are about $1 each, while 338 Lapua are probably $3 each these days. So, that's a decision you have to live with.
Despite doing it, I didn't see the value of case neck turning the Remington brass, and the chances are even less that you will have to do this with the Lapua with their brass.
This is my hangup with the decision between the Lapua and RUM. Brass choices for the RUM are less than ideal, compared to Lapua. I see Nosler has new brass for the RUM, I'll have to look into this a little more when that time comes.
For a resizing die, go with a Forster FL size die, which has the sizing button up by the neck of the die, so the neck gets sized concentric with the case. A Redding Type S neck die CANNOT necessarily accomplish this!! Nor a normal FL with the neck sizing button down further!! For a seating die, go with the Redding Benchrest or Competition seating die, and this is about $180 all by itself. It has a sliding sleeve to hold the whole case concentric as it pushes the case up over the bullet.
Already have these on order. Sure does hurt the wallet a bit more than RCBS/Hornady/Lyman. I don't see the Benchrest seating die, but I ordered the Competition seating die, Midway has them for $100.99 right now.
Oh, when you get a barrel for either of these, make sure you have it cryoed, and mine has a JP brake, and some sort of a brake is mandatory when you touch off 100 or more grains of Retumbo at once.
When I do re-barrel it, I think I'll try the AR style brake for the .338. The brake on the .300 WM tames it down to the recoil of a 6mm Remington, so hopefully its bigger brother works as well.
I'll look through you posts to find your conversation on these topics. Thanks for the help!!