Posted By: Pig_Popper
Why didn't anybody ever tell me that 450 Bushmaster was so accurate? - 12/22/16 04:15 PM
Spun together a build which came about from multiple "Black Friday / Cyber Monday" sales on components.
I already had the lower so it was just an upper build.
Barrel/Bolt was from Tromix, I was amazed at the lightweight profile, when I first picked up the USPS box on the porch I thought "Did they forget to put the barrel in here".
Generic steel lopro gas block, black mid-length gas tube, NIB bolt carrier, cheap Chinese hand guard (steel barrel nut), Wilson combat muzzle brake (I hate unique threads I considered the Wilson my only brake option), and a F-1 firearms upper receiver.
Test fired the build yesterday with Hornady 250gr factory ammo at 100 yards, below is a 4 shot group off double bags.
I am deciding to not spend 30.00 bucks a box to shoot factory ammo albeit with performance like shown above I really wouldn't have a problem doing so....
I am handloading a muzzle loader bullet (Monoflex - GMX) which is also 250 grains however in this photo you'll see that the muzzle loader bullet is longer than the factory FTX projectile.
I tested a variety of Lil'Gun loads and decided that 34.8 grains at 2251 fps was the best in terms of velocity and accuracy. The group size opened up slightly from the factory loads - I EMPHASIZE slightly
Recoil on this lightweight upper build is stout, a quick and direct punch back, however I shot 50 rounds without any discomfort.
The Sightmark PhotonXT didn't skip a beat ! I had tried it previously on a 458 Socom build and the recoil would shutoff the scope - no problems with 450 Bushmaster.
I hope to get this gun afield in January, I'll post up pictures of bullet performance on hogs.
I am overall IMPRESSED by the caliber so far!
I already had the lower so it was just an upper build.
Barrel/Bolt was from Tromix, I was amazed at the lightweight profile, when I first picked up the USPS box on the porch I thought "Did they forget to put the barrel in here".
Generic steel lopro gas block, black mid-length gas tube, NIB bolt carrier, cheap Chinese hand guard (steel barrel nut), Wilson combat muzzle brake (I hate unique threads I considered the Wilson my only brake option), and a F-1 firearms upper receiver.
Test fired the build yesterday with Hornady 250gr factory ammo at 100 yards, below is a 4 shot group off double bags.
I am deciding to not spend 30.00 bucks a box to shoot factory ammo albeit with performance like shown above I really wouldn't have a problem doing so....
I am handloading a muzzle loader bullet (Monoflex - GMX) which is also 250 grains however in this photo you'll see that the muzzle loader bullet is longer than the factory FTX projectile.
I tested a variety of Lil'Gun loads and decided that 34.8 grains at 2251 fps was the best in terms of velocity and accuracy. The group size opened up slightly from the factory loads - I EMPHASIZE slightly
Recoil on this lightweight upper build is stout, a quick and direct punch back, however I shot 50 rounds without any discomfort.
The Sightmark PhotonXT didn't skip a beat ! I had tried it previously on a 458 Socom build and the recoil would shutoff the scope - no problems with 450 Bushmaster.
I hope to get this gun afield in January, I'll post up pictures of bullet performance on hogs.
I am overall IMPRESSED by the caliber so far!