If the dealer only had 40 moa bases in stock, isn't he likely to tell you that they are "best" just to make a sale? Did he ask what rifle, caliber and load, scope and distance you intend to shoot out to? Most wouldn't because they simply wouldn't have a clue what is involved in setting up for LR.
The amount of slope you need is dependant on where your rifle zero's within the elevation range of your turret - which means how much elevation is still available above your 100 yard zero, how far you wish to shoot and the trajectory of your bullet. Having a sixty minute elevation range in your scope, and only twenty minutes of elevation left after you have zero'd at 100 yards really limits how far out you can reach. That is why the 20 moa bases are nice. Very unlikely you would need 40 moa with the .308, you should have no problem reaching out to 800 or better. That will be determined by your turrets, more clicks the better. We usually use about 37-38 minutes of elevation from our 100 yard zero out at 1000 yards with BHA 175 Match ammo. Depending on which scope you are using, if your scope zeroes within the bottom half of its elevation range 20 additional moa should be adequate.
Nightforce does not sell junk. Badgers are the most popular and the "in" LR base, they are used by a lot of military, LE and serious long range hunters. Another superb base is made in Canada, check out www.nearmfg.com
Nightforce makes both one and two piece bases. One-piece are more money but they eliminate the problem of cockeyed screwholes on top of your Remington's receiver.
Like Chris, I suggest a one-piece 20moa base and you will be good to go.
You might get the one piece Ken Farrell base. It is alot less expensive and are working out nice for alot of guys.
I hear Bruce Baer makes the NF bases for them. They are real nice, but worth the extra $$, don't know.
A 20 moa base is all you need like these guys say, and I agree with the part about the 40 moa might screw you up. That would depend on the total travel of the scopes internals. If you have 40-50 moa total vertical available and the scope would normally zero using up 20-30 moa, this is all you can back down by and still be zeroed at 100 yards. So if you slapped on a 40 moa base you could very likely be hitting the target 10-20 moa high, not being able to bring it back down anymore now. This could happen with a 20 moa base if you had alot of vertical adjustment with the normal base to start with, but it usually doesn't happen.
I have 50MOA built into my bases and then another 20 with the Burris Rings. I'd say 40 would be a good number. That is if you're really serious about the 3-800 yd range. Who would care about a 100 yd zero. I don't ever shoot at stuff at that range anyhow and if I should ever need to print on paper, dial all the way down and shoot at 2 targets on a 2x4 sheet of homosote. Aim at the lower, shoot the higher. It's great practice for rifle cant too. So what if you're still too high, (you most likely won't be). Also, by having the reticle centered at the longer ranges, your sight picture will be most clear there.
[ 02-17-2003: Message edited by: 4mesh063 ]
If you have something that you disassemble and reassemble enough times, sooner or later, you'll have two!
You are correct that you don't want to be at the outer range of your adjustments if possible. But we are talking 800 to a 1000 yards and the .308 needs around 40 moa to get there. Unless his scope has very little adjustment, 20 moa should keep him well into the adjustment range at the longer distances. We have no problems shooting out to 1100 with our Badgers and Nears, usually zero about 20 moa or so from the bottom of the adjustment range. Out at 1000-1100 our loads, rifles and skills pretty much give out, even tho we still have lots of clicks in the scopes.
when the dealer saw that i wasn't too excited about the 40 moa 1-piece, that is when he made the reccomendation for the 40 moa 2-piece, which he happened to be out of. i think i'll wait until the 20 moa 1-piece gets back in stock.
as far as my equipment goes... it is on order (i put the order in on friday), and i actually don't have any of it on hand... the rifle and scope should arrive sometime around the 25th of this month. so, i can't tell you how many clicks i really have on my scope.
Hunting is not a matter of life or death; it is much more important than that.