Re: Q: Any advantage of LTR in .223?
Man, no love here!! Just kidding guy's I'm sure the .223 has a special place in every heart. It was my first centerfire, and currently my last. I think that while all you guys have mentioned here is true and should be considered, I think the .223 is underestimated.
Here is an example borrowed from my range report: Yesterday myself, chubbles, and goathead1096, went out into the west Utah desert to stretch out a bit. The wind was bad (from 0 to 20 MPH and back to 0 all day long) so it was no surprise that we spent alot of ammo, but we learned alot about doping the wind. We setup many steel targets but the one I'll focus on was the 18"X24" mild steel silhouette set up at <span style="color: red"> 1240 yds </span> , confirmed by Swarovsky and Bushnell rangfinders.
We shot at it quite a bit, doping the constant changing wind was a challenge so we missed left right and otherwise. I was shooting my recently built .223 custom 20" Remington with 75 Amax's (more info in my signature build thread) Chubbles was shooting his custom .308 Remington, as was Goathead1096 firing 175 SMK's and 178 Amax's respectively.
The first hit on the freshly painted steel came from my little .223, the dings were impossible to see at that range and the .308's were just barely visible. But we knew when a hit was made, the dry desert dirt made quite the signature with every miss. While the steel made none whatsoever. After we collected my steel when we finished, we analyzed the hits, and while it may not be very scientific I believe we got it nailed down. Up close you can actually see the melted red plastic tips of the Amax.
My dope says that my 75 Amax's should be doing around 1100 FPS at that range, not much, but nothing to scoff at either. I would love to repeat the process with no wind and see how many hit's I could get.