22-243 AI & H4350

[YBPS]

Howdy-
I have a 8 twist, 25”, 22-243 AI, and 75 grain ELDM’s and was wondering if anyone had any load data for H4350?

Thanks,

 

[Beiruty]

Case capacity?
COAL with this load?

 

[YBPS]

Case capacity?
COAL with this load?

Case Capacity is about 53 grains of H2O
COAL 2.285

 

[STS]

In my experience with large 22 caliber cases like that, you will likely run into pressure problems way before you get the velocity that your cartridge is capable of. In other words the H4350 is a bit on the fast side for that case. You might take a look at 4831SC or some H1000. Both have shot well and offered optimal velocity at that charge weight.

 

[YBPS]

In my experience with large 22 caliber cases like that, you will likely run into pressure problems way before you get the velocity that your cartridge is capable of. In other words the H4350 is a bit on the fast side for that case. You might take a look at 4831SC or some H1000. Both have shot well and offered optimal velocity at that charge weight.

Thanks for your input.

 

[STS]

Another suggestion for that case is VV-160 or VV-165. Reloader 26 works, but you might as well be loading unicorn eye lashes because you're about as likely to find the hair as the powder. I've shot VV-160 in one of my .22 Creedmoors and it was the right burning rate, so I would think the 165 would be the better bet in your larger case.

 

[Kurz]

Case Capacity is about 53 grains of H2O
COAL 2.285

Please check your COAL measurement.

Thanks!

 

[Scooby-93]

Another suggestion for that case is VV-160 or VV-165. Reloader 26 works, but you might as well be loading unicorn eye lashes because you're about as likely to find the hair as the powder. I've shot VV-160 in one of my .22 Creedmoors and it was the right burning rate, so I would think the 165 would be the better bet in your larger case.

What bullet were your shooting in the 22 creedmoor with n160?

Would you mind sharing your barrel specs and load?

 

[Yote Hunter]

I would say Reloader 22/23 would give you accuracy and velocity with those overbite small calibers.

 

[SeabeeKen]

What a barrel burner. LOL

 

[Yote Hunter]

Darn spellcheck! Overbore calibers. Not overbite. Lol

 

[STS]

What bullet were your shooting in the 22 creedmoor with n160?

Would you mind sharing your barrel specs and load?

I didn't use it as a every day load, only tested it for accuracy and velocity. The 160 was virtually indistinguishable from Rl 26 which I have more of. I won't quote load weight since every barrel is different and what works for that barrel may be excessive for another. I will say that it was 2/10 of a grain less than where unacceptable pressure signs showed up in 6mm Creedmoor Lapua brass. It would shoot a 69 Lapua Scenar 3550 out of a 21 inch 4 groove Krieger.

 

[Doug Casner]

Are my 220 swifts overbite calibers? Just funnin ya yote. Doug

 

[Charlie-NY]

I've shot well over 1,000 rounds of 22-243AI with the 75gr Hornady A-Max (moly) bullet. It was an unbelievably accurate cartridge and got 3,670 fps from a 26" bbl. RE22 was an outstanding performer in this cartridge and with the 75gr bullet.

 

[B23]

I use RL26 with 80gr ELD-M out of my 224 Terminator, my gunsmiths version of 22-243 improved, and that combination shoots extremely well for me. My build has a Krieger Sendero contour 8tw finished at 28 and it's launching those 80 ELD-M's 3650

 

[YBPS]

Please check your COAL measurement.

Thanks!

Sausage fingered that. 2.825

 

[STS]

What a barrel burner. LOL

They make more barrels every day, and I have a credit card. So what's the problem?

 

[YBPS]

They make more barrels every day, and I have a credit card. So what's the problem?

Agreed. Barrels are cheap.

 

[Kurz]

Sausage fingered that. 2.825

Excellent!

I figured that's what happened but I needed to ask to be sure.

Thanks for explaining.

 

[B23]

They make more barrels every day, and I have a credit card. So what's the problem?

Many years ago when I had my first 6-284 built I asked the smith that was building my rifle about barrel life with a 6-284. He was kind of a funny dry sense of humor old guy and he told me "son, I can't tell you what other gunsmiths do but I thread all my barrels so they screw on and off, I don't not weld them on." I think that was the last time I ever asked a gunsmith about barrel life.