Go with AR400 over T1, it's much better. We just set up a stand and a piece of 1'x1'x3/4" T1 and the same with AR400 for the local range to do a comparison test before bying all the rest of the plates. I'm setting up another stand and 8 more plates of AR400 tomarrow. $1 per lb is what I paid, either type was the same, and that was cut out too. Everyone else in town wanted a $45 burn charge, plus $1 per lb.
1" thick 1'x1' weighs 40 lbs
3/4" = 30 lbs
1/2" = 20 lbs etc, so it's easy to figure the price. The burn charge is an hourly rate, and they can cut out what ever pattern you want for the same price.
The T1 had divots about .050" deep, cratered. The 6.5 WSM with 140 SMK's at 3150 was the worst, the 30-338 L with 200 Accubonds at 3140 was close to the same thing, still cratered. The 338 WSM with 300 SMK's at 2350 and the 300 WM with 180 BST's at 3150 were about the same, just a tad less than the 30-338 craters. All were shot at 300 yards.
The AR400 had scratches on it!, The 6.5 WSM with 140's at 3150 took maybe .010" of metal off, just enough to feel a concave in the steel, no crater or indication it was soft at 300 yards what so ever. I'm guessing 1/2" or even 3/8" AR400 may have reacted the same. The 3/4" may be over kill at 300 yards, even for the highest power rifles, save the 50 bmg.
1/2" T1 would be fine for 308 Win, even at 100 yards, been there on 3/8" and it worked fine but had a slight dimple on the back with one of the shots. The 300 WSM
blew right through it, so I'd go 1/2" or just buy 3/8" AR400 and be done with it "for the 308".
AR500 would be sweet at 100 yards I'm guessing, but I don't shoot steel that close after the reports I've heard of flying jackets etc.
I've got some pix I'll post tomarrow too.
[ 03-10-2004: Message edited by: Brent ]