18" Barrel 6 Groove 1:11 Twist Rate Short to medium engagement distances 0-500 yds. Possibly irons only maybe a scope will be used. Leaning more towards irons only though. I have my MK12 that is my go to long range gun. So, this rifle may replace that one. I have on hand right now: Black Hills 168 Gr. HPBT Match Winchester 147 Gr. NATO FMJ I am looking into: Lapua 150 Gr. FMJBT Lock Base Lapua 155 Gr. HPBT Scenar Lapua 167 Gr. HPBT Scenar Lapua 170 Gr. FMJBT Lock Base Yes, I like Lapua ammunition. No, I have not shot any of it yet but I will be ordering a box of each to test. What are your opinions of all the ammo listed? Better or best choices? Pro's and cons? I've done a ton of reading and research but haven't really found an "exact" answer. A lot of "kinda's, maybe's, theories" and the such. Any help would be greatly appreciated! And yes, I did a search on GT for some answers. No, I did not find what I was looking for.