Josh Cox wrote:Had a crack with the 230 ATIPS today.
From a 308 FTR rifle, 1:10 Bartlein 300/308 HP, ADI LR primer brass, ADI 2208, 45-43 in one grain increments.
Velocities 2594-45GN, 2568-44GN and 2514-43GN.
Firstly I'll start by saying, I do not know anyone that has truly got the big projectiles working well from the 308 case (some claim to, but their vertical grouping shows otherwise). I've played with 210 VLD, 215 Hybrids, 230 Hybrids and now 230 Hornady ATIPS, nothing looks super awesome.
Have got the Berger 155.5 shooting very flat, but it would appear I can't read wind for shit.
From my 308, not terribly interested in persuing these any further for my FTR guns. That said, I couldn't get the 210 VLD / 215 or 230 Hybrids to shoot either, last week I had a shoot of one of "The Greek God of Steel" FO guns (300WSM, 800M at Canberra), shooting 215 hybrids, and it shot awesome (well over 2950FPS, it was so much fun, I think I wee'd in my pants a little bit each shot).
To those that suggested the 185-200 realm for FTR, I now get it.
Why, I do not know.
What was interesting: between 45-44 grains the velocity difference was 26 FPS, yet 44-43 grains was 54 FPS, thoughts ? (% of oxidiser in the powder mix ?)
My guess is besides too heavy of a bullet for a 308 case I‘M going to say your twist isn’t fast enough. I don’t recall exactly till I get to work tomorrow but at 2800fps they needed faster than a 10 twist according to my numbers. I’ll double check tomorrow.