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I just chronagraphed my 44.5 of Re15 -155 Scenar and had a average of 2750fps shooting a Gap semi auto 24inch Bartlein barrel. 30 degrees temp. Does great groups. Will this speed get me to 900 yards or should I look for a higher speed. Thanks, Lance
Lapua lists BC as .508 I use .504 and launch them at 2950 fps. You can push your velocity up a lot from where you are. I've shot my load out of an ar10 before.
Don't know if this helps at all, but I have nailed the gong at 900 on the first shot a couple times with my AR10 shooting 155scenars in Win brass and 45gr IMR4895 at 2743 fps. Does about .5 MOA at 100 all day long.
may as well as keep it at 175gr. at that speed...the 155 lapua shine at 2900+fps.BUT...you are going to loose some speed simply because its a gas gun...
Looks like you're getting some good results with RL15. I went with Varget for my AR10 needs and I may have gotten the slowest lot ever. I'm getting the same velocity but with 46gr. 46.5 and I start getting swipes and the SD goes haywire. I was hoping to at least break into the 2800-2850 range with the 155gr SCENAR.
Barrel is a 21" Stainless Noveske with 1/10" Polygonal Rifling.
I'm starting to work up loads for my AR as well. Just bought an Armalite 10t with the 24inch barrel. Rifle is stock as far as I can tell. It seems to like 175's. I apologize for stepping in on your thread but I would like to ask what mods should I try first on my AR. I'm wanting to shoot to 900 with this rifle and stay within an MOA. Looks like the 155's are a good start. What else should I be looking at? Send me a pm or e-mail to [email protected]