What model remington 700 is this? I keep getting mixed answers online. Has a tri flute and threaded barrel. Markings LT Tactical on barrel. Any help would be great! Thank you!

Took my Remington 700 in 6.5 Creed out for the first time after having shot 60 rounds through it to break in the barrel. I don't know much about ammunition cause I'm new to high powered rifles and long range shooting. I forget where I was suggested to try out Hornady Whitetail 129g but I'm petty stoked about the results. Minus the two I pulled that's eight rounds in the center and bein pretty damn new to all this I'm happy with how my base model Remington did at 100 yards. Guy at the range mentioned that there was a gong out at the 300 yard range. Missed the first shot cause the steel was almost at a 90° angle. I was able to hit it with all of my last five shots, again pretty freakin stoked.

My question is bein that I'm new to all this should I stick with that particular ammo and get more practice with it or should I be tryin out a variety or different rounds?? I'm nowhere near deep enough into the hobby yet to even consider loading my own ammo, maybe ine day but not yet.

I’m having trouble seating this .308 load I’ve been working on, any advice for the fitment issue?

Super fun process , amazing how complex builds can get for LR. Now looking to learn how to shoot well

Build:
Noveske DDF 18” barrel
Upper BCM MK2 receiver
Rail Ripcord Industries LDR-A 15.15”
Lower mix between KAC SR-15 IWS and Radian ADAC
Buffer BCM MK2 T2 weight
Stock B5 Bravo
Optic Nightforce NX8 2.5-20 MIL-XT
Mount Zero Gravity Summit 1.54
Bipod Atlas BT46 FDE PSR
Mount Area 419 Arcalock Dual Clamp w/picatinny
KDG Kinetic Mlok Picatinny Rail 7 Slot FDE
Muzzle KAC QDC Open Brake 7.62
Suppressor KAC 7.62 QDC/CQB PRG

Been using the Noveske DDF 18” barrel for open division in gas gun matches since April ‘26. Rounds consisted of a three day precision course I took and truing out to 1067 yard and about 4-5 matches now. Mostly blasting Hornady 108 gr ELD-X. Most of the matches were shot with a Surefire flash hider but the last match I shot was with the KAC 7.62 Open Brake. Suppressor is brand new and I haven’t had a chance to test it yet but I’m excited to try it out. I have the full size and k size PRG cans for my 5.56 rifles. Next rounds will mostly likely be Hornady 80 gr ELD-VT V-Match.