22-243 with 95 grain Sierras

[Dstaffk5]

I put together a 22-243 to shoot the heavy 95 grn sierra mk. I haven't been overly excited about the performance. I may have it set back and try a different caliber. What would be a more efficient cartridge to shoot the heavy match king bullets? 22 gt? 22 xc? 22 Creed? 22x47 L?

 

[padom]

They shoot well in my 22GT. Haven't tested the 95smk in my 22cm... 22x47 actually sounds perfect for them....

37.7 H4831sc 2983 SD3 / ES8 0.53" @ 200yd in my 26" 22GT

 

[Ned Ludd]

I shoot the 95s out of .223 Rem, and they shoot quite well. What are you not seeing in terms of performance that you had hoped to see? In other words, it is a precision issue? A velocity issue? Something else? If it's solely a precision issue, I would suggest further load development is the only way to address that, especially rigorous seating depth optimization, regardless of the cartridge used. If it's a low velocity issue, what exactly were your velocity expectations from the 22-243?

 

[NZ_Fclass]

Give your bolt face, the most efficient would the BR, fastest would likely be what you have, or re-chamber to the 22/284.

And Ned has it " If it's solely a precision issue, I would suggest further load development is the only way to address that, especially rigorous seating depth optimization"

 

[Dstaffk5]

I shoot the 95s out of .223 Rem, and they shoot quite well. What are you not seeing in terms of performance that you had hoped to see? In other words, it is a precision issue? A velocity issue? Something else? If it's solely a precision issue, I would suggest further load development is the only way to address that, especially rigorous seating depth optimization, regardless of the cartridge used. If it's a low velocity issue, what exactly were your velocity expectations from the 22-243?

It's not a precision issue. Just seem to be getting pressure signs without the velocity. Also just wondering if the other cases would be less overbore.

 

[Zero333]

All the following are at 60,000 psi chamber pressure and a 26" bbl...

.22-460 Weatherby Mag 95 smk = 3,650 fps

.22-338 Edge 95 smk = 3,500 fps

.22-284... 95 smk = 3,400 fps

.22-06'... 95 smk 3,350 fps

.22-350 RemMag 95 smk = 3,350 fps

.220 Swift AI 95 smk with = 3,300 fps

.223 WSSM 95 smk = 3,250 fps

.22-250 AI 95 smk = 3,200 fps

.22 Creedmoor 95 smk = 3,175 fps

.22-243 - 95 smk = 3,175 fps

.22 Satan MK I (.22-6.5x47L)... 95 smk = 3,175 fps

22 Satan MK II (.22-65.x47L)... 95 smk = 3,160

.22 Flea 95 smk @ 25,000 psi - 1,100 fps

 

[Ned Ludd]

I figured that's what it was. One of the biggest issues running .224" heavies tends to be jacket failure. I can literally push the 95s hard enough in a .223 Rem to cause jacket failure. Of course, it takes a long, tight bore barrel and a twist rate faster than 7.0, but I've done it. As noted by Zero333, there are a bunch of options one could pursue, but I'm not sure how much more velocity would be realized as compared with what you're already using. Some of the listed cartridges certainly have a bit more horsepower, but extremely poor barrel life would probably also be a concern. If you're not already using one, a 0.219" bore barrel appears to lessen pressure a bit as compared to a more traditional 0.218" bore barrel. It will also help mitigate the potential for jacket failure, as would going with a slightly slower twist rate, maybe 7.25 or so. I'm not really sure you can get around the overbore thing to any great degree, it is what it is.

 

[CT10ring]

I put together a 22-243 to shoot the heavy 95 grn sierra mk. I haven't been overly excited about the performance. I may have it set back and try a different caliber. What would be a more efficient cartridge to shoot the heavy match king bullets? 22 gt? 22 xc? 22 Creed? 22x47 L?

My 22-243 shoots 105g V-maxes well.
Edit: Hornady 73g ELD-M's. The 6X47 uses 105's. Sorry.
It's a fantastic, odd caliber. H4350 powder is useful.
1/8 twist Krieger.
I'm shooting lil varmints. fwiw.

 

[Dstaffk5]

My 22-243 shoots 105g V-maxes well.
It's a fantastic, odd caliber. H4350 powder is useful.
1/8 twist Krieger.
I'm shooting lil varmints. fwiw.
View attachment 1462105

105 grain .224 v-max?

 

[Walt Krafft]

I tried this 15 years ago with a 22-250AI. Shot great for 10 rounds then the bullets all failed to make it to the 600 yard target. If I remember the first 10 scored 100 8x, the final 20 shot score was 109 8x. I was using 4831SC.

 

[CT10ring]

105 grain .224 v-max?

Ah, whoops. 22-243 load, attached. 73g's
The 105's are for a 6X47.
Thanks for the heads up.

 

[RDavies]

All the following are at 60,000 psi chamber pressure and a 26" bbl...

.22-460 Weatherby Mag 95 smk = 3,650 fps

.22-338 Edge 95 smk = 3,500 fps

.22-284... 95 smk = 3,400 fps

.22-06'... 95 smk 3,350 fps

.22-350 RemMag 95 smk = 3,350 fps

.220 Swift AI 95 smk with = 3,300 fps

.223 WSSM 95 smk = 3,250 fps

.22-250 AI 95 smk = 3,200 fps

.22 Creedmoor 95 smk = 3,175 fps

.22-243 - 95 smk = 3,175 fps

.22 Satan MK I (.22-6.5x47L)... 95 smk = 3,175 fps

22 Satan MK II (.22-65.x47L)... 95 smk = 3,160

.22 Flea 95 smk @ 25,000 psi - 1,100 fps


View attachment 1462090

Well you would be mad not to go for the 22/460 Weatherby wouldnt you?

 

[xswanted]

A 22 Creedmoor or 22x47 will run them 2900-3050 depending on what case you use.

Jackets will fail depending on your twist, slower twist like a 7.5 will help but then you run into stabilization problems. Or loss of BC.

That bullet really isn’t designed for the big 22s.

 

[padom]

A 22 Creedmoor or 22x47 will run them 2900-3050 depending on what case you use.

Jackets will fail depending on your twist, slower twist like a 7.5 will help but then you run into stabilization problems. Or loss of BC.

That bullet really isn’t designed for the big 22s.

A 22cm will run 95smk a LOT faster than that...

I run 95smk at 2945 out of a 28" 22GT with soft loads of H4831sc.. my entire load workup 37.4 - 38.6gr was 2923 - 2994

 

[Zero333]

Well you would be mad not to go for the 22/460 Weatherby wouldnt you?

22 Flea with tons of freebore shooting them heavy 22 cal bullets is worth a picture.
I figure the bullet sticking out of the mouth of the case would be longer than the case itself

 

[Shurefire]

I wont shoot the 95 smk in my 22 CM anymore. I had a hammer of a load with 36g of A4350, 2890fps out of a 26” barrel, but i shot them at 600 at the CMP Western Games on day 1 of the 80 shot match and they didnt make it to the target. I have a 7 twist Proof Research barrel.

 

[xswanted]

A 22cm will run 95smk a LOT faster than that...

I run 95smk at 2945 out of a 28" 22GT with soft loads of H4831sc.. my entire load workup 37.4 - 38.6gr was 2923 - 2994

Yep it will.

The jackets won’t like it.

 

[Dstaffk5]

I have plenty of twist rate. I believe it's 1:6. I think may set this back to 22x47

 

[padom]

Yep it will.

The jackets won’t like it.

if you over spin them that's for sure...keep those rpm below 320,000. Twist rate and bore size makes a big difference

I run a 7.5twist....2950 × 720 / 7.5 = 283,200 rpm and no jacket issues.

 

[3Ackleys]

A 22cm will run 95smk a LOT faster than that...

I run 95smk at 2945 out of a 28" 22GT with soft loads of H4831sc.. my entire load workup 37.4 - 38.6gr was 2923 - 2994

At what pressure will it run a lot faster? Peterson brass ran loads in their universal receiver to test pressure.
The 22 CM w/95 SMK @3150 fps was 70,493 psi. SAAMI Max pressure for the parent cases (6 & 6.5 CM) is 62,000 psi.

https://www.petersoncartridge.com/media/1367/22-creedmoor-press-release.pdf