I load Laupua for the wildcat 243 LBC. It is top notch brass but it's costly and that's the only caliber I buy it for. Being it's a wildcat, one pushes the envelope a bit with pressures so the Lapua brass tends to have better case life than other brands.
Dan
The 450 Bushmaster is a great brush cartridge. I've killed a few deer with one out of an AR-15. I would not choose it for anything much beyond 150 yds. There's just better rounds for that. So between the two choices you've given, I'd choose the '06 for reaching out there.
Dan
I have a Bushmaster factory 450 upper and run a rifle stock and buffer without issue.
I recommend going of the forum "450Bushmaster.net" and ask the experts.
Someone will there will figure it out.
Dan
Thanks, I had a 243 WIn many years ago that I sadly let go. It always dropped deer in their tracks. When I read about the 243 LBC, the idea of having near 243 Win performance in an AR15 intrigued me. I was using a 90 grain Nosler Ballistic Tip @ 2900 fps out of a 22" barrel. That's pretty solid...
Down here, there's no one pushing them like decades ago. My buddies and I hear very few shots opening day. The buck in the photo wasn't scared in the least. I sit on a boulder, chair height. He didn't care.
Dan
I've been hunting with an AR15 for 3 years now. The last two years with a 450 Bushmaster. I always make sure to post a picture of the deer with an AR15 laying across it on Face Book , just to prove the AR15 critics wrong.
Shot this 8 pointer in Orange County around 8:45 AM yesterday morning.
The rifle is chambered in 243 LBC. Weighs 8 1/2 lbs as pictured. Fixed magazine of course.
243 LBC. It has a stiff 22" Black Hole Weaponry barrel of their standard contour. The goal was to build the rifle to be at or about 8 lbs. As pictured it's 8 lbs 2.8 oz.
Dan
I have an upper that was built by JSE. It has an 18" bull barrel made by Wilson. That barrel takes forever to heat up and with select handloads or Federal Match ammo will keep 10 rounds in an inch square at 100 yds. Crap ammo still groups...well, like crap.
Dan
I've got an Odin clamp on adjustable gas block on the way this week. I'll be building a 243 LBC this year and it seems that an adjustable gas block is recommended for this wildcat.
Dan
The target was 100 yards. That was the sight in with Hornaday Black 250 grain.
The doe in the photo was 2017 and was about 12 feet. I shot 3 deer this year with the Thumper. A buck at about 80 or 90 yards and two doe at about 50 or 60. 2 deer ran and one was DRT.
That AR-15 is a fixed...