>>64108892
>.075 for a midlength 14.5 is nice
Not when you have the stupid brake [BCM Mod 1] that increases "dwell time". BCM quietly discontinued it and ships 14.5" uppers with A2 flash suppressors now

>>64108895
No, there's a reason the URX 4 has the greater diameter

>>64108915
The difference is that most those other brands don't OK barrels that were rifled with worn out mandrels. The radial marks on both of these barrels is the smoking gun

>>63966339
Barrel 02 has a fucked up crown so it's grouping worse than Barrel 01 which is similar in every other way

BCM fucked me out of all the money I spent on 75gr-77gr match ammo trying to group when the hardware itself was faulty

>>63904181
God fucking speed

>>63904231
But then Wuhan 19 happened: BCM's QC went to shit and Aero subjected employees to experimental gene editing

>>63904281
Wouldn't that get annoying for routine disassembly

>>63886314
>>63886428
>>63886481
lol I wasn't in the last thread and have no idea who's linking to my posts. My final statement on the matter was open ended

>>63880546
>>63880556

To my eyes, it looks like the Geissele groups better. If that's the case, might be because
1. The G$ taper is superior to BCM's pencil
2. The BCM chamber seal is inferior [they fail .223 no-go gauge tests]
3. BCM's renowned QC lets damaged crowns pass
4. Radial marks visible throughout bore in spite of chrome plating suggests the CHF barrels are being rifled with worn mandrels

BCM still technically meets the mil spec of 2 MOA, but that's pathetic IMO when the competition does better for around the same price during sales

>>63879981
Gonna need more than Loctite to fix a crown, kek

>>63879994
>I'm asking sincerely
The short of it:
Sloppy clearances + damaged crowns = poor accuracy