The 22 creedmoor thread

[Lawnboi]

I’m leaning towards a fast twist 243 barrel. Waiting to pick up one from jaoutdoors. A tikka takeoff. Should be very close to the 6 cm in speed. Distance wise also should be on par with the 22 cm.


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I think you’re missing out not trying a different barrel. All my tikka factory barrels have shot okay, but none of them have shot like any of the prefits I have bought. Closest being a ctr contour.

 

[willfrye027]

Update on my factory rechambered 22cm. About 200 rounds down the tube. Pressuring out now at 3050fps with h4350. Peterson SRP brass now 1x fired. Pretty stiff bolt lift. Cleaning did not help. Tried n555 and getting 3150fps easy, so I’ll try that for the next 100 rounds and see how it does.

Compared to my 25 creedmoor…
-Lighter weight gun, and still much less recoil
-Both about 7mph wind number, similar terminal effective range
-Harder to spot impacts at distance with 22cm
-22cm has been finicky with pressure signs
-22cm is chewing up barrels
-22cm I can still spot impacts from my tripod, 25cm is much tougher to do that

Can’t quite decide which to shoot an elk with in Montana in a couple weeks. The 25cm has always been reliable and I do have more confidence in it..but itching to test the 88eld on an elk

 

[Lawnboi]

Update on my factory rechambered 22cm. About 200 rounds down the tube. Pressuring out now at 3050fps with h4350. Peterson SRP brass now 1x fired. Pretty stiff bolt lift. Cleaning did not help. Tried n555 and getting 3150fps easy, so I’ll try that for the next 100 rounds and see how it does.

Compared to my 25 creedmoor…
-Lighter weight gun, and still much less recoil
-Both about 7mph wind number, similar terminal effective range
-Harder to spot impacts at distance with 22cm
-22cm has been finicky with pressure signs
-22cm is chewing up barrels
-22cm I can still spot impacts from my tripod, 25cm is much tougher to do that

Can’t quite decide which to shoot an elk with in Montana in a couple weeks. The 25cm has always been reliable and I do have more confidence in it..but itching to test the 88eld on an elk

H4350 was causing more pressure than I prefer. I swapped to h4831sc and havnt seen the issues like 4350. I also has some carbon issues too expounding it, short barrel was knocking carbon loose from my suppressor and making its way to the chamber.

I’m running slowish at 2830 in the 16”barrel now that I’m sped up.

 

[willfrye027]

H4350 was causing more pressure than I prefer. I swapped to h4831sc and havnt seen the issues like 4350. I also has some carbon issues too expounding it, short barrel was knocking carbon loose from my suppressor and making its way to the chamber.

I’m running slowish at 2830 in the 16”barrel now that I’m sped up.

I tried some h4831 in the last barrel, didn’t give me any more speed than h4350 and I only have a pound. But I’ve got plenty of n555 and it has been an excellent powder in other rifles so hopefully it shoots accurately. This barrel is about 1.0-1.2moa 10 shot groups it seems. Holding up well out to 650 have not shot it much further than that

 

[Formidilosus]

Following the same load development procedure I always use.

Superformance powder and 88 ELD-M on resized 6.5 CM horn brass-






Same except with 77gr TMK-

 

[willfrye027]

Following the same load development procedure I always use.

Superformance powder and 88 ELD-M on resized 6.5 CM horn brass-

View attachment 612956




Same except with 77gr TMK-
View attachment 612957

What kind of velocity are you getting?

 

[SouthPaw]

Can’t quite decide which to shoot an elk with in Montana in a couple weeks. The 25cm has always been reliable and I do have more confidence in it..but itching to test the 88eld on an elk

Lighter gun, less recoil, easier to shoot from various positions, same ballistics....you know what needs to be done.

Looks like a pile of us are hunting MT in a few weeks with 22cals. I'm looking forward to it, and to the reports.

 

[Formidilosus]

What kind of velocity are you getting?

2,980fps with the 88gr ELD-M. Didn’t check the 77gr.

 

[Lawnboi]

Updated the OP. Been checking cold bore zero, suppressor repeatability and doing some distance confirmation each day with a couple rounds. Things are looking good for this rifle coming to Montana.


I’ll agree with the above, this rifle recoils like a 223 but carries a wind number similar to its bigger brothers. Very fun rifle to shoot, spotting shots positional is not hard. This barrel has also turned out to be a good one. Makes for a well balanced and comfortable rifle to carry.

 

[Jake Leibke]

2,980fps with the 88gr ELD-M. Didn’t check the 77gr.

I’m not using the same powder but also have a 223 compact barrel reamed to 22 cm. I’m using hybrid 100 V powder. Similar charge weight and same speed with the 88’s as you getting. With the 77’s I’m at 3208 for speed. Both checked with over 20+ rounds using a labradar.


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[19hunt92]

Oh man i am late to this party but i had fun with my build early this year.

Intent of the firearm, thermal mid range coyote gun with maximum point blank range. Settled on an AR-10 platform from scratch and trying to keep under 10#.

Build list i can think of on the top of my head:
Lower is a skeletonized SR25
Upper is a skeletonized TSS
Barrel is an Xcal 22 creed (24" fluted 1-12 twist) and the head spaced Xcal bolt with it
buffer tube is a JE Machine skeletonized
Buffer is a JE machine silent capture
forearm is a skeletonized DD Hi profile MLOK
Trigger is a Rise Armament Single Stage
Odin Adjustable Gas block
Custom can to top it off and make this thing invisible in the dark as well as easier on the ears
Build kit parts for putting in all the other little functional things

Now the fun part, there was zero reload data i could find for a 32 gr Lehigh bullet in this caliber.
I pulled similiar data from 22-250 AI and started low and worked up H414, XBR8208 and H4895 using a chrono and closing the gas black to make sure i had clear pressure signs on the brass.

Long story of testing but only blew one case head on H4895 and got up around 4600 fps max with any powder
Group testing finally settled on XBR8208 pushing around 4400 fps and got 1.5" groups at 200 yds.

Finally decked out the gun with a AGM rattler TS35-384 and the arca rail attachments needed.

Need to get photos of everything as i was not expecting to find this thread today. ill update soon!

 

[willfrye027]

Finally settled on a load. This is a tikka 22” 22-250 rechambered into 22cm by Baldwin gun works. Now about 200 rounds down the tube. Peterson SRP and CCI #41 with 88eld. H4350 was OK but pressuring out early. 3020fps was too hot. tried n555 and it’s giving me much better results. No bolt lift even with rounds sitting in the sun and hot chamber. Could work up higher but this will do just fine. Just in time for Montana next week

3120fps

 

[prcwv]

Finally settled on a load. This is a tikka 22” 22-250 rechambered into 22cm by Baldwin gun works. Now about 200 rounds down the tube. Peterson SRP and CCI #41 with 88eld. H4350 was OK but pressuring out early. 3020fps was too hot. tried n555 and it’s giving me much better results. No bolt lift even with rounds sitting in the sun and hot chamber. Could work up higher but this will do just fine. Just in time for Montana next week

3120fps

View attachment 614205

How many grains you running?

 

[willfrye027]

How many grains you running?

41.5gr. Basically did forms simple load development again. N555 has been a great powder in creedmoor cases for me. A touch slower burning than h4350 and usually gets 50-100 fps more. Similar to RL16 but super clean burning, has been very temp stable for me and just as accurate or more than h4350.

 

[prcwv]

41.5gr. Basically did forms simple load development again. N555 has been a great powder in creedmoor cases for me. A touch slower burning than h4350 and usually gets 50-100 fps more. Similar to RL16 but super clean burning, has been very temp stable for me and just as accurate or more than h4350.

Good deal. I'm waiting on my Tikka to get done. I've got a variety of powders. I was debating between RL16, 6.5 StaBall an RL 26 Alpha SRP CCI 450 75ELDM maybe 75 VLD. I only know one person who shoots it an he just goes with the Horizon ammo so more knowledge the better lol.

 

[id_jon]

Shot a bull elk tuesday morning. 88gr ELD-m, 2860 at the muzzle. 489 yards, broadside. Shot him twice, he managed turned himself around, I considered sending a third round, but he collapsed right as I decided he didn't need it. He made it maybe 3 yards from where he stood when I shot, and that was mostly gravity. Onside shoulder a little bloodshot, but not too bad. Offside shoulder was clean, never found any fragments or jacket. Didn't dig too deep, he died on a south face in the sun, so I was in a bit of a hurry.

Tikka stainless with a Preferred prefit, in a Stockys VG, NF Atacr 4-16 Mil C. Tripod set up just high enough to clear the brush.

 

[MEdude]

Shot a bull elk tuesday morning. 88gr ELD-m, 2860 at the muzzle. 489 yards,

This may be a nice data point in the “bear, deer, elk, and moose thread” as premise starts with “bullets matter more than head stamps”. .22 cal match projectile, proving the point

Congrats on the bull. Beautiful.

 

[id_jon]

This may be a nice data point in the “bear, deer, elk, and moose thread” as premise starts with “bullets matter more than head stamps”. .22 cal match projectile, proving the point

Congrats on the bull. Beautiful.

I'll link it over there!

 

[Gstew1930]

I haven’t seen anyone mention N560, it’s worked great in mine with Berger 85.5’s

 

[ThatDUDE]

Tikka stainless with a Preferred prefit, in a Stockys VG, NF Atacr 4-16 Mil C. Tripod set up just high enough to clear the brush.

What are the specs on your barrel?