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Posted: 7/11/2007 2:40:35 PM EDT
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Does the BH Blue box 68grOTM have a cannaclure? I know the 75gr has a cann. ALSO WHY did BH only put a cann. on the 75gr hornady load and not the 69 77 SMK loads |
| All the 68 has always had a cannelure. 75 used to never have one untill Black Hills started buying the cannelured version for a couple years now it has ALL been cannelured. I know of no 69 grain cannelured Sierra bullet. Sierra only even made the cannelured 77 for the MK 262 spec and for nothing else. So you can get cannelured 77 SMK by buying MK 262. The 77 grain ammo is for MAXIMUM accuracy so I dont expect or even want it to have a cannelure in the Blue Box and Red Box lines. I have also not had luck with the 68 as far as accuracy. |
I have bought BLUE 77gr and 2 case of Blue 75gr along with MK262 the blue 77smk load is AWESOME out of a LMT M4 14.5 defender 2000 The blue 75gr with cann. is a darn accurate round useing my ML2 aimpoint I get ragged 10rd groups at 50 yards I find the 77 just a bit more accurate but not by much and the white box 77gr is Very accurate as well I would take the Blue box 77 over the white box 77 AS FAR AS ACCUARCY |
Did Black Hills add the cann to the 75gr for us AR15 shooters or just happen that way? |
Yup ..MK 262 originally didn't have a cannelure,was added for auto/semi-auto use |
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The 68gr ammo all has cannalure and a HEAVY crimp. the 69gr just as a crimp, no cannalure The 77gr non-MK262 has no cannalure The 75gr DOES have a cannalure The 3 MK262 rounds I took apart all have what some could consider a "light" cannalure that looks like it was just "kissed" with a tool. And I mean, it is not nearly as deep as what you see on 55gr FMJ bullets. The crimp on the MK262 is pretty light as well. (they don't chamfer the insides of the cases before they seat the bullets, from the looks of the cases) |
Did it have the BLACK TAR sealant |
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