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#7116818 - 03/19/18 07:50 PM Grendel Barrel Profiles 920 /720
StraitShot Offline
Bird Dog

Registered: 09/12/10
Posts: 371
Loc: Republic of Texas
I am trying to sift through the various profiles available for Grendel barrels. It seems there is a lot of overlap in terminology out there. To get to specifics…. Precision Firearms has Lilja 920 and 720 barrels. The 920 looks like a bull barrel profile and the 720 looks like medium contour. I am leaning toward the 720 fluted, 20”, 1:8 with a target crown. Not getting it threaded for flash hider etc… Is the 720 too light a contour for fluting? BTW – I am building on Rock River upper and lower.

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#7116822 - 03/19/18 08:00 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
FiremanJG Online   content
THF Celebrity

Registered: 12/16/08
Posts: 26410
Loc: Wolfe City, TX
No. .720" is larger than 11/16", and smaller than 3/4", flute it if you want to.
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#7116840 - 03/19/18 08:15 PM Re: Grendel Barrel Profiles 920 /720 [Re: FiremanJG]
StraitShot Offline
Bird Dog

Registered: 09/12/10
Posts: 371
Loc: Republic of Texas
Thanks.... Do you see any benefit to flash hiders ?

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#7116854 - 03/19/18 08:30 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
FiremanJG Online   content
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Registered: 12/16/08
Posts: 26410
Loc: Wolfe City, TX
No.

Brakes, yes.

Suppressors, hell yes.
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#7116862 - 03/19/18 08:36 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
Brother in-law Online   content
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Registered: 07/08/07
Posts: 28573
what is the primary use ?

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#7116889 - 03/19/18 08:52 PM Re: Grendel Barrel Profiles 920 /720 [Re: Brother in-law]
StraitShot Offline
Bird Dog

Registered: 09/12/10
Posts: 371
Loc: Republic of Texas
Mainly this one will be for target and occasional hog, varmint… etc. (one of the reasons I wanted the lighter barrel). Also, I've never had the opportunity to consistently shoot beyond 200yrds and now I do... So I expect I will spend on a scope.. been looking at NF. Everything else I have is 4.5 x 14x 40 Leopold VX-3.

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#7116894 - 03/19/18 08:57 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
wp75169 Online   content
Extreme Tracker

Registered: 10/11/09
Posts: 4931
Loc: Wills Point
Do you reload?

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#7116902 - 03/19/18 09:13 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
Stykes Offline
Bird Dog

Registered: 02/06/08
Posts: 282
Loc: Tyler Texas
Flash hiders can provide a benefit of keeping the muzzle crown from damage and mitigate flash at the muzzle in certain circumstances...... if you are using night vision at night or are in combat.

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#7116906 - 03/19/18 09:15 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
Brother in-law Online   content
THF Celebrity

Registered: 07/08/07
Posts: 28573
My favorite weight out of the ar's I've owned is that of the arp scout profile which is closer to your lighter pick

I'm not a fan of 20 " heavier barrels because of balance. Jmo

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#7116922 - 03/19/18 09:31 PM Re: Grendel Barrel Profiles 920 /720 [Re: wp75169]
StraitShot Offline
Bird Dog

Registered: 09/12/10
Posts: 371
Loc: Republic of Texas
Wp75169 - yes I'm an experienced reloader....7mm. 6.5mm will be new to me but I already have my first batch of Norma brass and am deciding on some dies.. Redding or Forster.

BIL - the 20" is more clumsy, agreed. .. But I want the distance / velocity gain.

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#7116941 - 03/19/18 09:58 PM Re: Grendel Barrel Profiles 920 /720 [Re: StraitShot]
Brother in-law Online   content
THF Celebrity

Registered: 07/08/07
Posts: 28573
I believe the gender is better with a 20", I didn't say anything about length, just weight

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