Sounds really interesting! Reed's Ammo offered at one point in time this bullet at 1400 FPS. Anyone ever get a box or test it? Is the .40 bullet still available as a component?
We just reloaded a ton of the 175 grain win silvertip using bluedot and x800 in win brass. We were getting 1275-1325 fps all day long. We loaded about 50 with win 231 and while they were less fps they were dead accurate. I imagine the 155s can easily get to 1400. The 175 silvertips is one of the most accurate loads for 10mm I've done. This is shooting 5-25 yards out of glock 20 and 29 stock barrels. As a off the shelf ammo the 175 is highly regarded. Wish I had some silvertip 155 to reload, have tons of nosler for that grain.
Few dummy rounds left over
(http://i60.tinypic.com/sy8by8.jpg)
It seems that the Winchester Silvertips are still being produced as components but seem to be on backorder. One thing is they are expensive, $46 per 100 for the 175grain and $47 per 100 for the 155grain.