• Watch Out for Scammers!

    We've now added a color code for all accounts. Orange accounts are new members, Blue are full members, and Green are Supporters. If you get a message about a sale from an orange account, make sure you pay attention before sending any money!

Sig Sauer 716 G2 Patrol review: Unknown chamber marks on brass

BravoSector1

Sergeant
Supporter
Full Member
Minuteman
  • Oct 26, 2011
    1,410
    284
    47
    Idaho
    I made my weekly drive by of the BX last week and once again spied the same Sig Sauer 716 Gen 2 I had seen there since July 17. The $1,789 price tag had no doubt driven off most potential buyers, including me, but I decided to handle it for the first time. Lightweight...for a piston 762 gun the rifle was light, not SCAR 17 territory but close, at 9.5lbs dry. The rifle had a number of handling marks on it so I asked if they would move it at a discount. They said, "how about $1,325 out the door"...I left with it.

    Pros:
    Light weight for a piston .308 rifle
    Proved to be accurate with match ammo
    Fit/finish is very good - tight upper/lower match
    Chambered, fired and ejected every single round -zero stoppages.

    Cons:
    No BUIS provided
    A single 20 round magpul magazine provided
    Unknown marks on case shoulder transition
    Lawyer trigger - consistent 9.2lbs - I replaced it with a ChipMc single stage

    I fired a total of 51 rounds of various COTS ammunition, and reloaded, during the initial sighting and test firing. I pushed through the X on any barrel break in and probably didn't let the rifle cool enough between strings so let that factor play in these results.

    The rifle...
    41986933831_e59d5e9571_b.jpg


    Loaded up with full 20 round mag, AD 30mm QD mount and NF 3.5-15 optic and QD atlas and Troy BUIS...
    28115638388_dfd820302f_b.jpg


    I fired 10 rounds of American Eagle 150gn to dial in the optic and start shooting for groups. All rounds fired at 100m. Rounds 31-50 were random accuracy checks on clay pigeons at 100m to finish out the range visit.

    Shots 11-15 were standard 168gn FGMM - not bad
    28115642568_90f63db275_b.jpg


    16-20 were of an opposite spectrum and I fired 5 rounds of 168gn FMJ Barnaul I've had for years
    28115640078_862107df1b_b.jpg


    21-25 were a 180gn Hornady SST handload...(heat may have been a problem with the vertical stringing)
    28115641068_5a6a853118_b.jpg


    26-30 were a 168gn Hornady A-MAX handload...good results! (42gn IMR 4895, win primer - target says "SST", they were A-MAX rounds)
    28115641278_af872ed056_b.jpg


    And the unknown. Notice the belt line at the shoulder of each round. Every single round fired from the rifle left this mark on the brass/steel. This is brass from 6 different factory/handload rounds fired during the session. There is definitely a hard ridge at the shoulder, I'm guessing and imperfection in the chamber (looking for input here) and unknown if this brass is now re-loadable. No pressures signs at this location on any of the brass but I can feel the ridge, step down, with my finger nail. Thoughts?
    28115637658_3c70e043cd_b.jpg
     
    Do you have access to a bore scope? I would get a good look at that chamber.
     
    Yup that is a chip that rolled in the shoulder during cutting the chamber. With the QPQ finish on the barrel it is not repairable, it must be replaced.