Bushmaster Rifles and their reliability.

[Leaky Waders]

Bushmaster Bolt Carrier Group Top, Bravo Company Bolt Carrier Group bottom.

The 1:7 being the best spin is very debatable...again if you're shooting longer bullets, then you want 1:7. If you look at 'the chart' you'll find half of the manufacturers use 1:9 twist. My abolt and remington bolt action 223 have 1:12 twist (I'm pretty sure). If you're reloading then it might be neat to have some variety of twist to help with certain bullets.

 

[M&PVolk]

Interesting comparison between the BCG and Bushmaster bolt carrier groups. The BC BCG is clearly finished better, but the staking does not seem to be a quantum leap over the BM. The question for me would be whether or not the rougher finish on the BM really impacts reliability much.

As to the 1:7 twist, I think it is almost a bit of a liability, as most readily stocked .223 ammo is in a grain and length more suitable to the 1:9. The 1:7 twist may stabilize a 55 grain round, but it is going to have double or triple the the MOA groupings the same round would have in a 1:9. Around my area, 55 grain is the easiest ammo to acquire.

Also, the lack of M4 feedramps on a BM hasn't had any impact on reliability that I have ever seen on one. Most of the guys I know with them shoot HP ammo exclusively without issue. Never seen any flaking on a BM, but the parkerizing does seem a bit "chalky", and they clearly aren't finished as nice as an M&P or higher quality gun.

 

[Daemon688]

I feed mine a consistent supply of wolf military classic. Ain't complainin.

 

[joeq]

Yes, they are very reliable. Bushmaster makes a very nice rifle.