223 Rem and 22-250.

[lhsako]

Sorry so slow. 22-250 with 50 gn NBT

RL15.

Some potential. Given I inherited 750 of these puppies, I’ll put some effort into making them shoot like the VMAX.


Sent from my iPhone using Tapatalk

>>>> change seating depth. It wants to shoot.

 

[lhsako]

The 223 Rem loves the benchmark. All 5 load steps were SubMOA. It’s the ragged edges of as good as I can hold with a front rest only.

The bottom picture is 3 shots
26.5gn and 27.5gn.

All seated 2.200”.


Sent from my iPhone using Tapatalk

>>> what's the speed ?

 

[mjcmichigan]

Sorry so slow. 22-250 with 50 gn NBT

RL15.

Some potential. Given I inherited 750 of these puppies, I’ll put some effort into making them shoot like the VMAX.


Sent from my iPhone using Tapatalk

>>>> change seating depth. It wants to shoot.

Yes, I agree, it wants to. I’m wondering if the original owner specially ordered the chamber. I’m loading the bullets pretty deep. Minimal throat/jump. I think the I4831 was showing signs of wanting to shoot.

My technique improved by the 60 th round.

I think my outing this weekend, it will shoot better.


Sent from my iPhone using Tapatalk

 

[mjcmichigan]

The 223 Rem loves the benchmark. All 5 load steps were SubMOA. It’s the ragged edges of as good as I can hold with a front rest only.

The bottom picture is 3 shots
26.5gn and 27.5gn.

All seated 2.200”.


Sent from my iPhone using Tapatalk

>>> what's the speed ?

Chrono less at present. Book would put it at 37xx. 26” barrel. I’ll go look what the reference barrel was.


Sent from my iPhone using Tapatalk

 

[mjcmichigan]

Might try it or the varmint grenade in the 22-250.

What is the twist on your 22-250? Barnes recommends a 1 in 10 or faster for the 50g VG.

I just got some StaBall as well and have tried it in a couple calibers, I believe it is going to be a good one.

Nice shooting, Mark!

I think I’m SOL on the Varmint grenades. It’s a 1:12 twist.

I bought them for a farmer that wanted 50-55gn for his 223Rem vanguard. He thought it was a fast twist. He was disappointed when I ran a brush and rod and showed him what a 1:17 looks like. The vanguard Was a 1:12 or 1:14. It shot 40’s and 36’s into tiny black dot. 50’s were not happy.

I do have an AR15 with a 1:7 223 Wylde chamber. Hadn’t thought about coyote with it. I use iron sights or red dot on it. I could scope it.


Sent from my iPhone using Tapatalk

 

[SJB358]

I may need to monkey with Staball a bit and the 55’s. Just to see what it does in my rifle. I like the speeds. Just need to put them on paper.

 

[mjcmichigan]

I really liked working with STABall 6.5.

Very easy to get metered! No static problems!

I just finished 9 rounds of 223 and 51 rounds of 22-250.(Staball6.5, IMR 4831, Benchmark. NBT’s, VMAX and SBK).

I’m catching lands at basically at book OAL. NBT was 2.350. Loaded it at 2.330 so it would have some jump 0.020 VMAX and SBK similar
Picture of 15 NBT’s.

Should I dare seat them any deeper. You can see the ogive is just about in the neck.

Game plan is to shoot the rounds all on Saturday, then go bow hunting for the afternoon!

Sent from my iPhone using Tapatalk

 

[mjcmichigan]

Sorry so slow. 22-250 with 50 gn NBT

RL15.

Some potential. Given I inherited 750 of these puppies, I’ll put some effort into making them shoot like the VMAX.


Sent from my iPhone using Tapatalk

>>>> change seating depth. It wants to shoot.

What thoughts would you have on seating depth. I hit lands at Saami OAL
2.350”. I seated them for 2.330”.

More jump or less? I have no experience loading on the lands.


Most my other rifles, I can load them long (within magazine constraints)

Picture of the rounds with NBT is in the thread. I’m concerned about more jump as the ogive and neck are nearly overlapping.


Sent from my iPhone using Tapatalk

 

[remingtonman_25_06]

I'd see what they do at .005"-.010" off. Nothing wrong with .020" off either as long as your still above the ogive, you'll be fine. I prefer to start my load develolment at 5 or 10 off the lands, that way if they dont shoot from there, the only way to go is deeper. A lot of my rifles shoot great at 5 to 10 off though, usually no need to tinker much more then that for hunting rifles.

 

[SJB358]

I’d start any of them right on the rifling myself. You’re not going to pull Bullets or any of the old stories by touching lands. Jamming them hard, and not enough neck tension, maybe but starting cup and core varmint Bullets doesn’t scare me a bit and gives me some wiggle room to work.

 

[mjcmichigan]

Thanks Scotty. I’ll give it a try.


Sent from my iPhone using Tapatalk

 

[mjcmichigan]

I got to the range today. Had it to myself. Shot quite a few rounds of 22-250.

The short version, benchmark and STABall 6.5 and the 22-250 and NBT’s get along fine. STABall had the best 50’grain group at 0.5”.

I did verify this morning, the rifle has a 1:14 twist. I thought it had a 1:12. But didn’t make 2 turns on a tight patch jag combo 26” barrel.

Here’s the picture of the results.
For a row like STABall 6.5, the starting powder is on the left and rightmost group would be the max. Most rounds at NE of POA.

After I get back from bow hunting this afternoon, I’ll break it down a bit more.

I imagine you guys like my cheapness on the target. Box from a fan, a little white spray paint and dots. I thin I’d prefer Squares vs dots just obvious when you have your target acquired.

Oh, the two worse groups, shooter error. I pulled two shots, and touched off one off before I meant too.

Sent from my iPhone using Tapatalk

 

[DrMike]

Interesting. But why is all the "cotton" on the ground? Did you knock the stuffing out of that box? :mrgreen:

 

[Elkman]

Your target looks just like a couple of mine, with my .223. I have never broken the sub 1" barrier, no matter what components or other adjustments I have tried. It does a great job on coyotes however.

 

[mjcmichigan]

Interesting. But why is all the "cotton" on the ground? Did you knock the stuffing out of that box? :mrgreen:

Looked like it didn’t it? I know I was the second person to use the 100 yard range. A guy wearing size 12 Rocky brand hunting boots did the 50 and the 100... was nice snow, wasn’t slippery.


Sent from my iPhone using Tapatalk

 

[mjcmichigan]

Your target looks just like a couple of mine, with my .223. I have never broken the sub 1" barrier, no matter what components or other adjustments I have tried. It does a great job on coyotes however.

I’m coming to the conclusion this rifle is consistently 1-1.7 MOA regardless of powder or bullet.
IMR4895, RL15, TAC, Benchmark is between 0.8-1.2 MOA, STABall 6.5 is looking at 1.2-.6MOA, interestingly the last two loads, you could see the group come together, but I also got some bolt resistance, but not bad. That was the Noslers. I’ll go check what the velocity was supposed to be on those. I wonder if the NBT’s just need a little more go than I’m giving them.

These two rifles 223 Rem and 22-250 Rem are fraternal twins. The 223 out shoots the 22-250. I have a bore scope. The 223 barrel looks pretty good. The 22-250, not so good.

I’ll verify the STABall 6.5 actually shoots 0.6 MOA.

The benchmark in the 223 with the Vmax is a keeper.


Sent from my iPhone using Tapatalk

 

[mjcmichigan]

Ok, I got a surprise while cleaning. I put same tape on my cleaning rod to check my 22-250’s twist, it’s 1:14”.

The surprise was the 223 Rem is 1:9”.

I would have thought for 224 caliber and fraternal twins, I expected the same twist.

I’ve been loading in these backwards. The 223 with 1:9, should make those NBT’s stabilize better in the 223 vs 22250.

Scotty, I checked the STAball 6.5 43.0gn, should be doing 4000 FPS with a NBT50. My next fastest max speed was 3800.

So yeah, the NBT’s like speed.

Going to check stability calculations for NBT and 1:14.

I probably should be running the vmax in the 22250 and nbt in the 223...

Yes, I got the guns second hand from a guy that inherited them, so no insight provided.


Sent from my iPad using Tapatalk

 

[gerry]

Maybe I missed it but what brand of rifles are they? Too bad they made so many 1 in 14 twist 22-250 rifles over the years and handicapped it so badly considering it has ample case capacity to drive heavy bullets.

 

[mjcmichigan]

Well, that stability calculator was enlightening.

The 50 gn bullets are marginally stable at 1:14”
In fact, 40’s are hit or miss depending on who’s standard you use.
JBM says stabile between 1.3 and 2.0( and more).
Military spec wants 1.5-2.0.
STAball 6.5 got it to 4200fps and they grouped about 0.6”.
The calculator says marginal. 1.150

I need to put the 50’s on my 223 which @1:9, I get a stability on the 50 gn NBT’s at 2.737. Should be very stabile.

I could run those Barnes varmint grenades in then 223.

Shaking my head, 1:14 twist in fluted heavy barrel. Why would you go with 1:14 that barely stabilizes 40 gn varmint bullets.

I can’t complain as I can get it to an inch and maybe a little better with the Staball65 at 50’s. I should be able to find something it likes in the 40’s.

Frankly.. I’m thinking new barrel or rebore vs have something with marginal life in it.


Sent from my iPad using Tapatalk

 

[mjcmichigan]

Maybe I missed it but what brand of rifles are they? Too bad they made so many 1 in 14 twist 22-250 rifles over the years and handicapped it so badly considering it has ample case capacity to drive heavy bullets.

Savage model 12’ single shot bolt action, 26”:stainless fluted heavy barrels.


Sent from my iPad using Tapatalk