Hammer 22 Creedmoor Testing

orkan

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Testing has begun! Stay tuned folks.

This will be a running thread that will track the progress of a series of tests with Hammer bullets to explore some specific aspects of their bullets performance. Things are off to a promising start on this brand new Stratton Custom Rifles .22 Creedmoor Barrel.

Test rifle configuration -
Lone Peak Fuzion action
Triggertech Diamond trigger
SCR 26” benchmark barrel : 8 twist, heavy MTU, Primal Rights chamber.
Foundation Exodus stock
B&T Super-CAL bipod
Thunderbeast Ultra 7 suppressor
Hawkins DBM
Hawkins Heavy Tactical rings
Tangent Theta 525P

HlJJwPMh.jpg


Greasy fast speed out of these things. I’m a little shocked by it actually.


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BEEMAN

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That’s impressive. Is this going to be used up to deer size game? You don’t really say what performance will be tested.
 

orkan

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That’s impressive. Is this going to be used up to deer size game? You don’t really say what performance will be tested.
Not sure if I'll use it on deer.

The rest of this response is not directed at anyone in particular. (don't read into anything @BEEMAN, not speaking negatively of you!) ;)

There are quite a lot of metrics I'll bee looking at, as this is my first experience with Hammer bullets. I have extensive experience with 22 creedmoor chambers, barrel configurations, components, and performance with traditional jacketed bullets. There are a lot of things being said about Hammers on this site, both positive and negative. It has become glaringly apparent that there is a lot being said on both sides which are false at worst, or over-simplified at best. Even if that were not true, there is a decided lack of first hand qualified accounts which have been meaningfully documented. So, this will be an objective collection of my observations, and I'll draw all the conclusions I can from those observations across the life of this barrel. No arguments will be engaged in or tolerated. I'll be documenting as much of the process as I can. The results will be what they are, and no amount of bickering will alter that fact. Disruptors will be reported and ignored. All are encouraged to comment and ask questions, but be respectful!

This barrel was started with Hammer 52's, and that's all the barrel will see across its life.

Initial observations:

Speed. These bullets move out... and they seem to shoot best when you are really stepping on it. Load development was interesting, because I'm accustomed to keeping in a low node. Initial results at lower pressures were not great. It also took a bit of work to find an optimal seating depth. Quite simply, they behave nothing like jacketed counterparts of equal weight. This was expected, given the unique design properties of the Hammers. The goal for the first session was to just start getting some rounds on them and see if I could start figuring out what the barrel likes. Definitely achieved that. Obviously I'll need quite a bit more rounds fired before I can do final load development, but having something that shows promise early is always nice.

Fouling. These Hammers don't seem to foul up like traditional jacketed bullets. Normally I would need to clean a new barrel within 20-30 rounds of firing because it will start to pressure up. Clean when new, fire 20-30, clean, fire 60 or so, clean... then I generally clean when I've decided I'd clean after that. This barrel has 64rnds on it presently and has not pressured up.

As is typical with lighter bullets in the .22 creed, H4350 does not seem to be optimal. Velocity topped out at 3975fps with H4350, as there was simply no more room in the case to get enough of it in there. Varget showed optimal case fill, velocity, accuracy, and precision in early testing with these Hammer 52's.

Jump tolerance and seating depth. It took a bit to discover where they liked to be seated, but once I found the window... tuning from 1/2MOA down to this little bug hole of significantly under 1/4 MOA, was a move of .005". The seating depth window of 1/2moa performance was about 50 thousandths wide. So, no conclusions can be drawn yet, but the initial observation is that they can shoot well across a wide range of seating depths, but to really get them to bug hole it will probably be a much smaller window. This chamber is running a .125 freebore. These bullets are hopping a LONG ways. Not quite sure how far yet, as I only had 2 driving bands engaged and it still wasn't touching the lands... so that will take further experimentation to discover. It's encouraging that they can shoot well with that large of a jump, as it tends to indicate a fairly forgiving bullet. This is also good from the perspective of speed, as longer jump will typically stay under pressure and leave room for performance.

Having zero experience with Hammers, I started from bare nothing... and I did not look on the internet for data because I did not want my experience tainted by preconceived notions. So work began drawing from only my own experience with the 22 Creed, and I think if I had worked with these bullets at all before I probably would have had an easier time locking into where they like to be earlier. My experience with jacketed bullets in the 22 Creed with my chambers is so extensive, I can usually get sub-1/4 MOA within 12-20rnds, regardless of component choice. These Hammers are a different critter all together, and I'm excited to be able to provide everyone with some quality data as this project progresses.


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BEEMAN

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Thanks for the explanation. I read nothing negative out of that. Really looking forward to your testing. Hoping you consider testing on a whitetail. I think at that speed they’d work. As long as the shots aren’t to far.
 

Bucklowery

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I look forward to the results and what they show especially long term over a barrel’s life. What is the round count where you usually see accuracy drop off with other Bullets. I am not familiar with the 22 creed.

Thanks

Buck
 

orkan

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I look forward to the results and what they show especially long term over a barrel’s life. What is the round count where you usually see accuracy drop off with other Bullets. I am not familiar with the 22 creed.

Thanks

Buck
A typical 22 Creed with 80gr class bullets tends to be about 1100-1200rnds before it becomes difficult to hold 1/4 MOA for any length of time.

I have a nearly identical benchmark 22 creedmoor barrel that I am over 900rnds deep in with jacketed 75's and 80's which I've got a very good barrel log on. It hasn't started going out yet. So we'll be able to see as direct of a comparison as I'll be able to provide once that barrel is killed.


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Korhil78

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Good read. I like the unbiased results. I didn’t see where you said how far off the rifling you were seating them for optimal results?

Thanks for the testing.
 

Creedmoor shooter

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Following. Are you planning on doing any longer distance testing to see what the bc does at a hyper velocity? I've heard some say that you get less than expected drop with these hammers at 4000+ fps. Would be curious to know what your findings are.
 

orkan

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Good read. I like the unbiased results. I didn’t see where you said how far off the rifling you were seating them for optimal results?

Thanks for the testing.
Please read the above post again. I addressed this.

Are you planning on doing any longer distance testing to see what the bc does at a hyper velocity?
Absolutely. This was just the very first session.
 

Wedgy

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I noticed the Orkin chamber at .125 FB, what is standard and why choose .125 ?
I look forward to the testing and hope the audience remains civil regardless of the results.
That Varget load is exactly what I would shoot in the summer heat, you got me thinking !
 

orkan

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I noticed the Orkin chamber at .125 FB, what is standard and why choose .125 ?
I look forward to the testing and hope the audience remains civil regardless of the results.
That Varget load is exactly what I would shoot in the summer heat, you got me thinking !
22 creed is not a SAAMI cartridge, so there is no “standard.” Many run a .080 or .100 free bore. I have an .080 and .125 reamer at the moment. Stratton Custom Rifles has a .100 on hand. So you could pretty much run wherever you wanted, depending on the bullet you are trying to run. You could run a 0 free bore if you were going to stick with 40gr or 50gr stuff. I prefer to throat long, as I don’t like my bullets bearing surface being beneath the neck/shoulder junction. .080 will often pressure up pretty early with most 75gr+ bullets. Then there’s the fact that many bullet designs tend to shoot just a hair smaller with 50-60 thousandths of jump than they do at 10 thousandths off.
 

Pat Byrne

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Away from the original topic a bit, what velocities were you seeing with 80's or heavier with what powder and accuracy?
I have a 12'' twist barrel that I run 55NBTs in at a bit over 4,000's.. A nice combination.. I'll follow your report on the Hammers with interest.
Thanks for posting your findings..
 

orkan

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what velocities were you seeing with 80's or heavier with what powder and accuracy?
Typically I run 80gr VLD's... but recently came into a batch of 75ELDM's which seem to be quite good. Both will move out in several barrels at roughly 3450 to 3525fps. H4350, H4831SC, and H1000 are all suitable for those heavier bullets and all provide sub-1/4 MOA in the barrels that like them. (never not had it work)



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