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Re: Might switch bullets in Grendel [Re: Pig_Popper] #9186269 02/14/25 01:36 AM
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Originally Posted by Pig_Popper
Originally Posted by KK30RAR
100gr nosler accubond is perfection in the Grendel


If only that bullet existed !


My bad 100gr partition is what I’ve been using for years


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Re: Might switch bullets in Grendel [Re: 603Country] #9186291 02/14/25 03:19 AM
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16” barrel you can shoot 123gr without concern inside of 200 yards

I thought maybe you went shorter than that

Have fun


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Re: Might switch bullets in Grendel [Re: 603Country] #9186305 02/14/25 05:24 AM
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Originally Posted by 603Country
He was asking why I’d use that bullet (the SST) if it wouldn’t shoot well. I thought it an odd question because I expect to be able to work up a good load even with the shorter barrel. I wouldn’t assume it can’t be made to shoot well. But…we’ll see. Next week.

I do worry that the shorter barrel will have me shooting a slow enough load with that 123 gr bullet that mimics my old 35 Remington. That’s what has me thinking about using lighter bullets. If, by chance, the 95 gr V-Max and the 100 gr Nosler shoot to nearly the same place, I can use the cheap V-Max for general use and the more expensive Nosler for more serious uses. That would be ideal. I know for a fact that the 100 gr Nosler BT will work on deer and hogs, but they aren’t cheap and they are often hard to find.

I’d imagine that a lot of Grendel shooters have had the same ideas about bullet weight and velocity in 16” barrels.


It is an odd question, since the bullet has little, if anything, to do with the groups opening up.

For what it’s worth, I recommend the 123 eld-m. I’ve killed piles of deer and pigs with that bullet in the Grendel.

Re: Might switch bullets in Grendel [Re: Sneaky] #9186360 02/14/25 01:58 PM
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If some hogs don’t show up, I won’t have much need to load up more ammo. It’s not a pig meat issue though, at the moment. The neighbor trapped 3 out of a big sounder and gave me plenty of meat. And I sharpened all his dull skinning knives in return.

The suggested 123 ELD-M would probably work just fine, but I’m not short of bullets. What I don’t know right now is how many of each of those bullets I have on hand. I do think that I have a bunch of the 123 SSTs, so I should go ahead and use them.

I wonder why there aren’t more Grendel bullets for game that are in the 100 grain weight. That seems to me to be a sweet spot for short barrel velocity.


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Re: Might switch bullets in Grendel [Re: 603Country] #9186392 02/14/25 03:09 PM
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It is just a powder charge issue. And potentially a powder selection issue. Shortening a barrel, it is usually appropriate to go with a faster burn rate powder, and test powder charges again. The barrel still possesses the appropriate twist rate of the length of the bullet. Muzzle velocity is going to be less, but the short barrel is the stiff barrel. It is often easier to find an appropriate new load, in some aspects. In other aspects it is difficult, because every charge looks acceptable. Every charge looks acceptable, because the barrel flexes less, being shorter. Another reason 200 yard groups is so important. A "bad load" can look very good at 100 yards.


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Re: Might switch bullets in Grendel [Re: J.G.] #9186476 02/14/25 05:38 PM
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I don’t think I’ll have any trouble finding a good load with any bullet I have on hand. The powder is H335, so finding a faster powder isn’t on my to do list. The longest shot I should have to make would be about 250 yards, for a coyote at the designated carcass dump spot. Honestly, the toughest problem with accuracy is the trigger. I don’t want user error complicating load workup. I think maybe I’ll replace it before this next workup session. I’ll have to give some thought as to what to replace it with. Single stage? Double stage? And whose? And how light a pull?


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Re: Might switch bullets in Grendel [Re: 603Country] #9186489 02/14/25 06:10 PM
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H-335 is plenty fast of a burn rate.

Giselle triggers usually get a nod

Trigger Tech triggers I put in bolt actions. And they are excellent. They also make AR triggers.

1.5 pound is where I like to be.


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Re: Might switch bullets in Grendel [Re: 603Country] #9186490 02/14/25 06:23 PM
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I have killed most of my critters with the 123gr A-Max and some with the SST both of which were both designed for the Grendel. I got some 129gr LRAB Noslers and really like the in my Grendels. Accuracy is good enough sub MOA in both rifles out to 400 and 500 yards and effective on hogs out there or deer and hogs close in so far all have left a nice exit hole, cannot say that for the SST or A-Max.

120gr Gold dot is another good one in the Grendel


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Re: Might switch bullets in Grendel [Re: 603Country] #9186526 02/14/25 08:01 PM
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Originally Posted by Pig_Popper
Why would you continue to load that bullet if for stated reasons it won’t shoot well ?
What were group sizes and velocities before and after the shortening of the barrel ?


Originally Posted by 603Country
He was asking why I’d use that bullet (the SST) if it wouldn’t shoot well. I thought it an odd question because I expect to be able to work up a good load even with the shorter barrel.

I’d imagine that a lot of Grendel shooters have had the same ideas about bullet weight and velocity in 16” barrels.

Understood. I was referring to the 2nd question, which is certainly legitimate. You were referring to the first question. Anyway, you're right about Grendels and 16" barrels. Most I've seen are 16 and on ARs. As I recall, most published data is for 20" barrels. While a lot of ARs don't really benefit from a longer barrel, the Grendel certainly does. I wish you luck.

Re: Might switch bullets in Grendel [Re: garyrapp55] #9186568 02/14/25 09:23 PM
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The rifle upper was bought from a fellow that was having another Grendel built, and it had a 20” barrel. It was just too long and heavy to suit me, so I finally took it to a smith and asked that it be shortened to 18” and no flash hider. He cut the dang thing to 16” WITH a flash hider. Do people not listen any more? So I have a 16” barrel.

Looking at a CMC 2 stage drop in trigger.


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Re: Might switch bullets in Grendel [Re: 603Country] #9186584 02/14/25 09:41 PM
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I grab a piece of blue tape right in front of the rifle owner. Write what they want done on the blue tape with a Sharpie. Then stick it to the rifle.


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Re: Might switch bullets in Grendel [Re: J.G.] #9186595 02/14/25 09:53 PM
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Originally Posted by J.G.
I grab a piece of blue tape right in front of the rifle owner. Write what they want done on the blue tape with a Sharpie. Then stick it to the rifle.

How very 20th century of you. I bet it works.


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Re: Might switch bullets in Grendel [Re: unclebubba] #9186617 02/14/25 10:55 PM
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Originally Posted by unclebubba
Originally Posted by J.G.
I grab a piece of blue tape right in front of the rifle owner. Write what they want done on the blue tape with a Sharpie. Then stick it to the rifle.

How very 20th century of you. I bet it works.


It does.

Re: Might switch bullets in Grendel [Re: unclebubba] #9186631 02/14/25 11:21 PM
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Originally Posted by unclebubba
Originally Posted by J.G.
I grab a piece of blue tape right in front of the rifle owner. Write what they want done on the blue tape with a Sharpie. Then stick it to the rifle.

How very 20th century of you. I bet it works.


Judd calls me an old soul.

I've never failed to follow what is requested, though.

Last edited by J.G.; 02/14/25 11:23 PM.

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Re: Might switch bullets in Grendel [Re: 603Country] #9190840 02/22/25 08:19 PM
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The Grendel now has a Triggertech Diamond 2 stage trigger, with adjustable pull weight. Just took the rifle to the bench and shot a nice 3 shot group into the 1” bullseye. So, for what it’s worth, the shorter (16”) barrel puts the bullet where the 20” barrel length put it. The problem with accuracy was the trigger, or my handling of the trigger. Either mechanical error or user error. Probably more user error if I have to be honest. This Triggertech Diamond is some crisp. Feels like a good bolt action trigger. Wasn’t cheap.

I am going to the 100 gr Nosler BT for general pig, coyote, and eventually maybe deer use.


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Re: Might switch bullets in Grendel [Re: 603Country] #9197916 Yesterday at 08:16 PM
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I made the switch to the 100 gr Nosler BT today. Like JG said, the shorter stiffer barrel made most loads look pretty good, but I had to burn some powder to find a sure enough good load. I finally settled on using Nosler’s recommended max load of H335. MV should be somewhere around 2500 fps. Impact point at 100 yards is very close to where the 123 gr SST hits.

I really have to concentrate to shoot that AR accurately, even with bags on front and rear. The new Triggertech Diamond trigger makes it a bit easier, but the wife is still grumping about me spending that much.

Now…I need a pig…


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Re: Might switch bullets in Grendel [Re: Pig_Popper] #9197927 Yesterday at 08:53 PM
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Originally Posted by Pig_Popper
When you shortened your barrel the groups opened up with 123 gr SST

Why would you continue to load that bullet if for stated reasons it won’t shoot well ?

If it were me, I’d find the bullet that shoots best in the barrel and then account for weight/ cost/ and effectiveness

A poor shooting rifle/load combo is a non-starter for me and if the shortening of the barrel brought that forward then it would be time to switch bullets . . .

What were group sizes and velocities before and after the shortening of the barrel ?


Originally Posted by 603Country
Odd question. I’ll just work up a new load with the 123 SST for the harmonics of the shorter barrel. A bit more or a bit less powder. I’m sure it’ll shoot great, but if not I’ll try another bullet. The groups opened up a bit, but not so much that I can’t hunt with it. Part of my shooting problem is the trigger. i have LaRue triggers in 2 ARs. One, the 223 trigger, is great, but the one in the grendel isn’t so great. I don’t know how they could differ so much, but it makes the Grendel harder to be accurate with.

I’m trying to avoid buying more bullets. I already have a lot of bullets in a couple of calibers. I might sell some of the ones I don’t plan to use. I’ll open a new tread on AR triggers, though it’s been discussed a lot already. Maybe there’s something new.

So, new load and new trigger…or maybe I have the wrong spring in it. Better check before I buy another trigger.


Call me Odd . . .

But correct in the end

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Re: Might switch bullets in Grendel [Re: Pig_Popper] #9197949 Yesterday at 10:05 PM
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I never said that you were odd. The odd question was to ask why I’d consider keep using the 123 gr SST if it wouldn’t shoot well. It just didn’t shoot that well at the powder charge I used prior to the barrel getting shortened. I had a supply of those loads, so I just shot em up (kept using them…sorta). Killed one hog with one of those remaining loads. The loads weren’t bad, but they weren’t good enough to suit me.

Pretty sure you know it’s just a matter of finding the new good load for the shorter barrel. You’d surely do the same.


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Re: Might switch bullets in Grendel [Re: 603Country] #9197980 Yesterday at 11:09 PM
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I would and have

The tricky parts are when you cut a barrel from 20” to 16” and leave the gas system at 20” gas port size

Are you running a rifle length gas system on that 16”.now ?

That’s sort of where the question was coming from along with bullet weight consideration for your adjusted velocity

Many bullets in 6.5 better suited for 16” barrels below the 123 grain weight


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Re: Might switch bullets in Grendel [Re: Pig_Popper] #9197996 Yesterday at 11:51 PM
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I’m using the same gas system that came on it, but don’t remember any specifics. As for the gas port size, it’s unchanged. What you’ve said is interesting, and I’ll discuss it with the very knowledgeable folks at the local AR-centric gun shop. At present the gun shoots good and tosses brass at 4 O’clock. And not splitting necks since I switched to the Redding FL bushing die.


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Re: Might switch bullets in Grendel [Re: 603Country] #9198021 16 hours ago
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Just go shoot pigs with it - if it cycles and works you’re set

The things I mention are only considerations if you run into cycling problems or when reloading specific bullets and powders

Later gator


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