Just picked up the new Grendel (first bolt Grendel for me) I wanted a 16 bolt gun to use for hunting suppressed. I have hunted with my 16 AA incursion suppressed on Kodiak island and killed 3 deer on that one trip. The gas guns just start having cycling issues when you put the can on and it make the gun and magazine extremely dirty! Cycling issues is not something you want when solo hunting Kodiak Island due to the largest brown bears on the planet. So Im going simpler and hopefully lighter.
The American set up with optics, bipod, full mag and suppressor is a full pound lighter than the ultra light AA incursion with optics and a full mag. The American has its own problems that I need to work through, rough cycling, magazine play, feed ramp, not balanced, and I dislike the stock very much. But for a 500$ gun Ill give it a shot. The rifle all dressed weighs 9.5# the same as my tikka superlite creedmoor so its Packable on sheep/goat/deer hunts. Any input On fixing my problems would be appreciated!I will post pics and data as soon as I shoot
I worked mine over a lot, cycling a few mags thru it to see if any would work. Finally settled on a couple of duramags, but also I'm shooting only 123 sst's and 100 ttsx's (handloads) loaded to ~2.260-2.265. Shorter coal's. like the 90 gr Tnt, hit the backside of the barrel below where it should enter into the chamber. Purposeful firm cycling and using those loads will cycle them except for the last round in the mag... which part I haven't resolved yet, so I just make sure I have enough in there not counting the last one.
129 Ablr's loaded out to that length would probably also work.
Mine is a ruger predator 22", in an mdt-lss-xl chassis but still uses the AR mags, 10-rounders.
I'm ok with it, not up to 100% cyclability yet but basically ok.
If you have the ruger flush rotary mags then you could get an after-mkt stock from bell/carlson and that will probably help feeding.
If AR mags however not as many choices.
Boyd's has an AR conversion kit you can add onto one of theirs. I don't know how well that works however.
If the temp drops on Kodiak watch your powder sensitivity, CFE and some others are pretty temp-dependent.
"Down the floor, out the door, Go Brandon Go!!!!!"
BT99,
you are much braver than i, i think. though i'll never get the chance, if i were hunting blacktail on Kodiak island, i'd pick a caliber that would be capable of fending off those bears if necessary. it'll be overkill for the little blacktail for sure, but you'll come home each hunting trip. however never being on K.I. perhaps it's not so hard to hunt deer and avoid bears so that train of thought of mine may not be necessary at all.
-tdbru
Theyre not as bullet resistant as a lot of people think. Ive seen a 5.56 shut the lights off on them rascals, they sometimes get pretty brave and think that they can take your stuff. Not giving them the benefit of the doubt is key. Also carrying a side arm is recommended.
11-16-2020, 02:48 AM (This post was last modified: 11-16-2020, 03:01 AM by Bucktail99.)
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Not the best groups but shots were taken at 130 yards low light and I forgot my rear bag. I think The gun will shoot better! 20 degrees today. All shots were with factory ammo, Hornady black 123 eld, Hornady 123 sst, federal 90 tnt which as gray fox mentioned liked hanging up on the ramp. The Alexander Arms mags worked better than the factory mag. The ssts shot the best. I will load up some 123 elds with xbr8208 and let yall know!
I purchased that same rifle from Gun Weenie. I took some snap caps and one of my best Elander mags, didnt feed for shit. Even tried some of my brass dummy rounds, zippo. Sent the rifle back. Ruger needs to get their shit together, Howa, no such issues. A2
My Grendel Ruger was so rough I could barely cycle the bolt. I stoned the rough tool marks off the mill cuts in the bolt and lightly broke the sharp edges. Took me a careful hour in front of the TV but the difference was night and day. This will help with the feeding as well. The smoother bolt travel the less fighting the round off the magazine. My rifle endd up shooting very well. Ended up giving it away to a friend that liked it. I have a pair of CZ's and a Alexander-built AR anyhow...~Riuma
My RAP Grendel would not cycle or feed worth a damn for me with a C-Products mag. Which worked best in my AR-Grendels. Long story short, someone on the forum suggested modifying the mag spring pressure. I cut 2 coils off the mag spring and it runs like a top now, unreal. I cant make it jam. Amazing. I cant explain but, it worked like a charm for me. The mag is still sloppy and rocks in the magwell but, it doesnt seem to matter now. YMMV.
I have had 2 CZ rifles, both garbage. First one the scope holes were tapped off center. And the chamber was out of spec. The second has feeding issues, and the stock was cracked. Bolt actions, go Howa! A2
Quote:someone on the forum suggested modifying the mag spring pressure. I cut 2 coils off the mag spring and it runs like a top now, unreal.
Yup. Take some spring tension off a mag. If you have a mag or two that work better than others, load them up and keep them like that for weeks before cutting the spring and see if that helps them.
before you do anything above, take the action out of the stock, clean the oil off the threads and clean out the holes of excess oil. Use blue loctite and retorqe the action. Ruger states 60 to 80 in/lbs. I started at 55 in/lbs using a Wheeler Fat Wrench and worked the action OUTSIDE with live ammo up to >60 making sure the rounds cycled before calling it done.
usmcm16a2 Wrote:I have had 2 CZ rifles, both garbage. First one the scope holes were tapped off center. And the chamber was out of spec. The second has feeding issues, and the stock was cracked. Bolt actions, go Howa! A2
Wow! I have eight CZ's and have had no serious issues. What model rifles and calibers were your two lemons?? ~Riuma
Ya these ar magazine platforms take some adjusting to. Those heavy sprung magazines definitely make the rar one that likes to be cycled with authority. I polished underside of my bolt a little and it does cycle perfectly with c-products 10 round. If you really go slow and easy on the last round it will pop out of magazine different than the previous 9 and miss the hole but not likely to be an issue afield just when youre being lazy on the bench. Cycling with any normal speed that wont happen. I like the tip about taking a little spring pressure off the magazine, just wouldnt want it to get too weak and not drive the last couple rounds up although that seems unlikely considering just how stout ar magazine springs are...bolt actions dont need that sort of pressure at all.
Also agree it would be nice to take the wiggle out of the magazine but it certainly doesnt affect feeding. Overall I really like the feel and balance of this rifle. Trigger is great, easy to adjust or mod a little lighter. Hope to see some stainless options one day but as is I think it will stand up well and be a good workhorse. I run low weaver rings at 2.5 oz and Leupold fxII 6x36 at 9 oz and the balance is ideal. Better than factory Cz 527s which are tail heavy by comparison...I really like how the ruger points and holds offhand, very stable. If youre not happy with balance see about going to one of the smaller Leupold scopes like a Vx3i 2.5-8x36
Has anyone tried the Boone and Crockett reticle on the Grendel for a bdc? Small carrot maybe....
Ive seen leupolds erectors having trouble returning to zero and I would like to shoot at least to 600
riuma Wrote:Wow! I have eight CZ's and have had no serious issues. What model rifles and calibers were your two lemons?? ~Riuma
Ive got 4 and all of mine are awesome, shoot sub MOA with agreeable ammo. Fit and finish are also top notch. My only gripe is the 527 17 Hornet mag can jam up and cause the occasional missed pick up. Other than that, the triggers, walnut stocks and actions are top tier!
Bucktail99 Wrote:Has anyone tried the Boone and Crockett reticle on the Grendel for a bdc? Small carrot maybe....
Ive seen leupolds erectors having trouble returning to zero and I would like to shoot at least to 600
I have a B & C Leupold 4.5-14x40 on a .223 Wylde AR. I just put it on the rifle & haven't sighted it in yet. It's probably gonna be awhile before I get to do that. All the rifle ranges here are on lock-down per the governor's orders. I plan on using the rifle for an over-populated prairie dog town in the foot hills of Mount Taylor. I wish I could give you more info on the scope but I do think it'll be good to 600 yards easily for the Grendel.
I refuse to be victimized by notions of virtuous behavior.
usmcm16a2 Wrote:I have had 2 CZ rifles, both garbage. First one the scope holes were tapped off center. And the chamber was out of spec. The second has feeding issues, and the stock was cracked. Bolt actions, go Howa! A2
I think you just got some bad guns. My cz will never be as smooth as the howa I had but, I haven't had near the issues you had.
My dream bolt grendel would be to take the barrel and trigger from my cz and mount them in a howa mini action. Now that would be a great rifle.
A5BLASTER Wrote:I think you just got some bad guns. My cz will never be as smooth as the howa I had but, I haven't had near the issues you had.
My dream bolt grendel would be to take the barrel and trigger from my cz and mount them in a howa mini action. Now that would be a great rifle.
I ask about the models because the 527's arent' drilled and tapped, and the chambers are hammer forged with the barrel. It's hard to get out of spec. I once had a fellow gripe about his "CZ" and it was a Zastava Mauser -which ain't exactly a CZ. I have shot 527's for a lot of years and not gotten a lemon. The closest thing I had to a problem was my 300 AAC where I SBFL sized brass for my AR and I would get the occassional misfire in the CZ. This is entirely due to my sizing in an attempt to have "universal" ammo that would work in all four of my 300's. Had nothing to do with the rifle.~Riuma
I would have thought Ruger could have done some modifications to the 6.5G RAP by now. They know they have issues out of the box with this particular rifle. No one, regardless of price, should have to do what is needed to get them to cycle properly at the consumer level. At least a Savage Axis cycles out of the box and for what you get at that price line, they are hunter accurate.
I have a Ruger RAP stock from another rifle that I bought on Gunbroker that I put on mine to make it 100% cycle. (wide gap in the stock tolerances obviously). Plus I had to reduce the spring tension in two of my Grendel AR mags, take the action apart and degrease the action screws and put them back in per Ruger's own torqe specs, tweeking them until it cycled and repolish the feed ramp and edges. I think Blaster and many others were wise to put a little more money into their CZ's and Howas. I prefer to buy American but the Ruger Americans in 6.5 Grendel suck bigger than black holes in space. How about a 6.5 with an AR magazine and some quality control to get the tolerances correct on each one coming down the line? How hard can that be?
Will we truly be happy when Sako chambers their micro xs action in 6.5 Grendel? I think so. Ill take walnut with the red recoil pad and stainless. Ill also take a carbonlite or a finnlight 2. I would also be interested in kimber Montana, and ruger Hawkeye stainless walnut. Sort of sucks that the Grendel seems to only draw budget rifles to chamber. The cz is the highest quality option we have.
