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22_boomer

jager
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Reply with quote  #1 
I'm new at the Grendel game and with the short time I've been able to shoot my AR it's been a lot of fun but I have some Grendel Noob questions.

I got the 24" Saturn/Liberty barrel from Brownells and started shooting Hornady 123gr A-max and 123gr SST ammo along with some PPU 120gr Grendel ammo to break in the barrel and test my scope. I had some trouble at first with right to left accuracy and found that the rear scope mount was loose. After correcting the problem I decided to finish off with the PPU ammo and shot 3/4" to 1" groups. Now this barrel has a Saturn/Liberty GII chamber and I'm shooting factory ammo. Will this barrel be able to do better with the factory stuff or do I need to start reloading the brass I'm collecting to a longer COL?

Also, I have the E-lander 10 round magazines. Are these mags good for a longer COL or do I need to get different mags.

Thanks for any help.
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Borrego Bob

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Reply with quote  #2 
yes it will get better as the barrel breaks in. Elander mags a good mags but limit COAL. If you reload recommend ASC mags as they have the longest COAL. The ASC mags will feed out to 2.295 and C products to 2.290. 

[12916832_10154094990659520_7622534716858504147_o] 



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“What’s the secret of success? Right decisions. How do you make right decisions? Experience. How do you get experience? Wrong decisions.” – John Wayne

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22_boomer

jager
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Reply with quote  #3 
MSRHunt,
Thanks for that info and the name of that magazine. I knew there was a mag that allowed longer COL but could not find the name and you supplied it!

Quick question -- where can I get that mag you show in the picture at that price?

Thank You!

Edit to add: Went to the ASC web site and found the price you showed in the picture. Ordered a couple.
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Borrego Bob

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Reply with quote  #4 
you can get the fairly cheap at http://www.44mag.com the brand is asc.
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“What’s the secret of success? Right decisions. How do you make right decisions? Experience. How do you get experience? Wrong decisions.” – John Wayne

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22_boomer

jager
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Reply with quote  #5 
Oh well -- live and learn. Thanks for that site. If the ASC's work well with my reloads I may need to order some more.
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22_boomer

jager
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Reply with quote  #6 
On my second time out I shot the Hornady 6.5 Grendel 123gr SST ammo. The wind was blowing pretty good from left to right and I kind of overcompensated and my shots moved to the left. The picture is 8 or 9 shots, I don't remember the count -- not a one hole group but getting better as I go.


I also shot the Privi Partisan 110gr and 120gr Grendel ammo and it seemed to shoot real well but the 110gr ammo had a vertical string with the one  shot to the right which was my fault not the wind. The Privi ammo seems to shoot pretty good for me.


The barrel does seem to be getting better as I shoot it.
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schultino

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Reply with quote  #7 
The Barrel can likely a little Barrel with that ammo, but there surely a lit more of opportunity to find a load that will consistently group sub-MOA. Reloading can lead to groups you never thought the rifle, or you could pull off.
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schultino

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Reply with quote  #8 
Also, the COAL of that PPU 120gr is usually 2.2315", and you may find that in reloading manuals the advised length tends to be much longer... In the Grendel II throat, you'll begin jamming the bullet into the lands (Barrel grooves) at just over 2.24"... The Key is to find that Sweet spot of COAL, where the bullet is ALMOST touching or barely kissing the lands.

Jamming the bullet into the lands can lead to pains like you extracting a round to find the bullet is still jammed into the start of the Barrel, and a bunch of powder everywhere inside the chamber, bcg and upper..
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22_boomer

jager
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Reply with quote  #9 
I'm saving all my fired brass for reloading but right now I want to just shoot commercial stuff so I kill two birds with one stone -- getting to shoot my new rifle and collect brass for reloading when I feel I'm ready. 

By the way, I ordered one of the AA 16" fluted Grendel barrels so I can build a lighter weight carbine. The barrel is on back order so I won't be building it for a while. The rifle I have now has a 24" GII barrel and is a bit heavy with the bipod attached. I shoot using a Harris bipod on a shooting bench with the rifle butt held into my shoulder.
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