“The 22 Creedmoor Project”

[waspocrew]

62gr. ELD-VT’s with 43gr. H4350

Pressure signs were fine. But I’d probably consider it about max due to the slightly flat primers.

10 shots
View attachment 824886
View attachment 824887

That looks like it should slay coyotes with very little effort!

 

[huntnful]

That looks like it should stay coyotes with very little effort!

I would think so!! Not much POI shift either. Not enough to matter out to a decent distance anyways. Looks like hold dead on 0-250 with it being .5 high

 

[huntnful]

This morning. Pretty cool setup. It was super foggy so I knew it would be close if they came in.

Had two coyotes just appear out of seemingly thin air and were on my call at 20 yards.

Couldn’t get on the second one fast enough before he vanished in the fog.

Beautiful coat on this young male

 

[huntnful]

Anotha one

 

[BBob]

Also ordered my own .120 freebore Alpha reamer. I’m really liking this cartridge and want all my future barrels to be as identical as possible.

You wouldn’t happen to have a reamer print for the reamer would you? I don’t see where they list one. I haven’t asked them yet but will if you out someone doesn’t have one. General searches hasn’t turned one up yet either.

 

[huntnful]

You wouldn’t happen to have a reamer print for the reamer would you? I don’t see where they list one. I haven’t asked them yet but will if you out someone doesn’t have one. General searches hasn’t turned one up yet either.

I don’t have, and have not seen an actual print for the reamer actually

 

[BBob]

I don’t have, and have not seen an actual print for the reamer actually

Thanks, I searched a fair a bit more and found no reference to one at all so far. I'll message them and see if they'll provide one. My assumption it's SAAMI but with FB changes.

 

[huntnful]

Took a short break from the 22CM to get the new 7-300 NMI up and running.



180 ELDM’s.

Two 5 shotters overlayed for a 10 shot .6 MOA



180 Hybrid Targets. 25 rounds for 1 MOA



Carbon barrels are OKAY I guess

 

[chamois]

Good shootin'...!

 

[huntnful]

Back on the 22CM.

21 rounds into .75 MOA, shooting up the last of the Virgin brass I had loaded for this barrel. Garmin didn’t grab them all, but damn this gun hammers.




All I did for the brass prep was chamfer the inside and outside of the neck. And brush the inside with an oversized stiff nylon brush in a drill. I put a little moly lube on the brush every 10 cases. But no mandrel. Just as they come from Alpha

 

[mddat]

@huntful curious if you’ve ever done a ladder test or OCW test and picked what looks like the best charge weight and what appeared to be the worst charge weight and then shot some large sample size groups of each to compare? I’ve thought about doing it but haven’t yet, i pretty much just follow the painless load development method so haven’t bothered but would be interesting to see

 

[huntnful]

@huntful curious if you’ve ever done a ladder test or OCW test and picked what looks like the best charge weight and what appeared to be the worst charge weight and then shot some large sample size groups of each to compare? I’ve thought about doing it but haven’t yet, i pretty much just follow the painless load development method so haven’t bothered but would be interesting to see

I have never done that actually! Would be a good test with this barrel honestly. Because it freaking hammers. I just loaded up 250 rounds for this NRL shoot in April though. So most of my brass is tied up.

If it’s the one where you’re looking for a “flat spot” in velocity, I absolutely don’t believe in that though. It’s borderline impossible to be true just based on all the nuances going on with ignition and environmental changes and what not.


One I have toyed with a little bit is a charge weight ladder at longer ranges to see where the charges start to jump up and out of the group. That test does give obvious indications that at a level of charges, bullets maintain a flatter water line, and then as the charge gets higher they start to jump up and out of the waterline.

But even then, I’ve never repeated the test twice to see if I get the same exact results.

 

[mddat]

I have never done that actually! Would be a good test with this barrel honestly. Because it freaking hammers. I just loaded up 250 rounds for this NRL shoot in April though. So most of my brass is tied up.

If it’s the one where you’re looking for a “flat spot” in velocity, I absolutely don’t believe in that though. It’s borderline impossible to be true just based on all the nuances going on with ignition and environmental changes and what not.


One I have toyed with a little bit is a charge weight ladder at longer ranges to see where the charges start to jump up and out of the group. That test does give obvious indications that at a level of charges, bullets maintain a flatter water line, and then as the charge gets higher they start to jump up and out of the waterline.

But even then, I’ve never repeated the test twice to see if I get the same exact results.

Yes I was talking more about a long range ladder test, I’ve never believed there is any validity to finding a velocity flat spot. If you eventually have time to test it I’ll be interested to see your results, I’ll probably still try it myself one of these days for my own curiosity

 

[huntnful]

Yes I was talking more about a long range ladder test, I’ve never believed there is any validity to finding a velocity flat spot. If you eventually have time to test it I’ll be interested to see your results, I’ll probably still try it myself one of these days for my own curiosity

Gotcha! I just shot the charge weight water line test with 6.5-7PRC and 140 hybrids the other day. I only shot it at 400 yards because it was pretty windy. This what it looked like.

 

[Harvey_NW]

One I have toyed with a little bit is a charge weight ladder at longer ranges to see where the charges start to jump up and out of the group. That test does give obvious indications that at a level of charges, bullets maintain a flatter water line, and then as the charge gets higher they start to jump up and out of the waterline.

But even then, I’ve never repeated the test twice to see if I get the same exact results.

Gotcha! I just shot the charge weight water line test with 6.5-7PRC and 140 hybrids the other day. I only shot it at 400 yards because it was pretty windy. This what it looked like.

View attachment 836428

I'd be curious to see if it was actually a benefit to vertical dispersion, or if the group just trended higher in comparison between a mid charge like 67 compared to 70 with 10 shot groups. I might try to test this once the snow melts and I can get up to my range in the mountains.

 

[huntnful]

I'd be curious to see if it was actually a benefit to vertical dispersion, or if the group just trended higher in comparison between a mid charge like 67 compared to 70 with 10 shot groups. I might try to test this once the snow melts and I can get up to my range in the mountains.

Oh absolutely. Very small sample size.

I guess the point is to not be near the edge of charges where they start to jump vertically? It makes sense on paper with the small sample, but in practice over large samples… idk if it’s rock solid??

 

[Harvey_NW]

Oh absolutely. Very small sample size.

I guess the point is to not be near the edge of charges where they start to jump vertically? It makes sense on paper with the small sample, but in practice over large samples… idk if it’s rock solid??

It's just me being speculative of extrapolating anything from these type of tests because most of them have zero validity. I just wonder if there's any credible improvement in loading where they stay on waterline, or if a 70gr group would have the same amount of dispersion, but just trend higher. But to me this also aligns with what ballisticians mean when they say dropping the powder charge can improve dispersion. You found the nOdE

 

[huntnful]

It's just me being speculative of extrapolating anything from these type of tests because most of them have zero validity. I just wonder if there's any credible improvement in loading where they stay on waterline, or if a 70gr group would have the same amount of dispersion, but just trend higher. But to me this also aligns with what ballisticians mean when they say dropping the powder charge can improve dispersion. You found the nOdE

Completely agree. I don’t really put much weight into the test when I do it. The impacts normally just jump up when I get to pressure anyways lol. So if you just drop a grain, you’re noded to the max lol.

But I always fall back to the most precision shooters in the world. They aren’t dumb, or fudds. I’m sure the guy that shot a 10 shot 2.7” group at 1000 yards didn’t pick a random charge, random seating depth and have 500 rounds on his uncleaned barrel lol.

I believe things to micro tune precision exist, but I’m not convinced I have the platform or skills to prove it, or if the small gains even matter for killing animals under 99.9% of realistic field shots