Hornady 5.56 55gr. #2267 and H335

ddraper

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So I want to load up some 5.56 and I have H335 and a bunch of Hornady 55gr. #2267 bullets. I was thinking about paying for the Hornady load data for that bullet. Regardless, I hadn't gotten around to pay and then I was at Cabelas and they had the book so I looked at the load data. Bam, no load data for H335 for that bullet. Guess I'm glad I didn't pay for it.

After searching the web and this forum some I think I'm going to go with 25gr. for a start.
 

ddraper

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How did you come up with 25 grains as a starting point?

For this thread H335 for .223?

Here are some of the comments:

24.5-25 gr of H335 is what I use under the 55’s.

I just reloaded a batch of 5.56 up to 25.6gr of H335. (remember 5.56 is hotter than .223).

I am at 25.0 for 55gr. I've loaded higher but that gave the best accuracy for me.

25 gr of h335 with a 55gr fmj has been my go to load since 1994.
 

Tackdriver

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For this thread H335 for .223?

Here are some of the comments:

24.5-25 gr of H335 is what I use under the 55’s.

I just reloaded a batch of 5.56 up to 25.6gr of H335. (remember 5.56 is hotter than .223).

I am at 25.0 for 55gr. I've loaded higher but that gave the best accuracy for me.

25 gr of h335 with a 55gr fmj has been my go to load since 1994.

The reason I ask is that you are likely looking for accuracy at a certain distance or looking for bullet performance at a certain distance. 25 grains isn’t the hottest load in that caliber, but it’s not at the starting point either. If you are after accuracy, especially at closer distances, then it’s probably wise to start someplace around 22 grains.

Dave
 

ddraper

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The reason I ask is that you are likely looking for accuracy at a certain distance or looking for bullet performance at a certain distance. 25 grains isn’t the hottest load in that caliber, but it’s not at the starting point either. If you are after accuracy, especially at closer distances, then it’s probably wise to start someplace around 22 grains.

Dave

Firearm is an AR with 14.5" barrel and muzzle break. 1:8 Twist. Looking for something in the 100 yard range. I'd like it to be pretty accurate but will mostly use the ammo for plinking or shooting bowling pins. The rifle likes 62gr. better than the 55 but I have a few thousand 55gr bullets so I figure I might as well use them.
 

mac1911

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those horndy 55s and h335 have been my bulk plinking loads for a good while. Stocked up on the 55s and I got “ stiffed” on. Powder group buy and stuck with 335.
My generic load will hover around 1 moa out of my 16” RRA upper with cheap 10x scope. I think its a 1/9 twist. I went with 24 grains right from the get go—- for the most part it seems 24 grains of alot of the common “AR” powders does well, with in reason of known data , powder burn rates and bullet choice that is.
I recently put my 335 stash to the back of the powder cabinet and pulled all the bottles with 1/4 1/2 lb left in them to burn off between the 55s and 69s.
so for getting stuck with 335 I have to than that guy who stiffed me. Turns out to be pretty good stuff for me
 

andrew1220

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I’d have to double check but I believe I use 24.5 or 25 gr of H335 with the 55’s.
But I worked up to that load. I can’t say I would recommend starting at 25 gr but that’s up to you.
There’s really no load data in the Hornady manual? I’ll have to check mine
 

dcmdon

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From the Hodgdon powder reloading data site.


55 GR. BAR TSX FB
Manufacturer Hodgdon
Powder H335
Bullet Diameter 0.224"
C.O.L. 2.180"
Starting Load
Grains 21.3
Velocity (ft/s) 2,920
Pressure 48,900 PSI
Maximum Load
Grains 22.7
Velocity (ft/s) 3,063
Pressure 53,000 PSI
 

50wt

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I'm using LC brass, Berrys 55gr fmj ,2.24 oal and 23.5 grains of h335 for an avg velocity of 2700 out of a 16" barrel using a magnetospeed chronograph.
 

mac1911

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My Hornady 9th says H335 for #2267 is 20.8gr/2800fps to 23.2/3100fps(MAX). COL 2.200 out of a 26” rem 700
Note this is for 223, not 5.56. As you stated, they do not have data for #2267 for 5.56. Odd.
seems the manufsctures are splitting 223 and 556 data.
I first seen it with Sierra with their AR load data.
Then my hornady manual has a 556 service rifle data that runs 69-80s

Nosler does it also.

The older 223 rifles runing slow twist barrels geared for lighter bullets- i remember 52gn was heavy for 223.
The throats/leads where cut shorter. Seems like everything has a wylde chamber these days , unless your getting a bolt gun designed for light bullets with the 1/12- 1/14 twist barrels?
 
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gerrycaruso

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The Hornady 10th edition lists that exact bullet with 335. The range is 20.8 to 23.2 and velocity is 2800 to 3100. the rifle was a Remington 700 with a 26" barrel. Hodgdon #27 says 23 to 25.3 and the Lyman 50th says 24.3 to 27.
 

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I just tried some of the 25gr H335 loads with these bullets and was pleasantly surprised, accuracy was better than I expected. I used 223 brass this time around but want to try some in 5.56 brass next.
 

mac1911

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I just tried some of the 25gr H335 loads with these bullets and was pleasantly surprised, accuracy was better than I expected. I used 223 brass this time around but want to try some in 5.56 brass next.
i have not seen much of a difference in case capacity from "223" " 5.56" brass. Heck i think my own testing deviations are probably + /- more than any actual case to case variations.
 

jpm

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i have not seen much of a difference in case capacity from "223" " 5.56" brass. Heck i think my own testing deviations are probably + /- more than any actual case to case variations.

I actually did when I loaded some Varget but that may be because one is a ball and the other is a stick powder. Plenty of room to seat the bullet in the 223 case w/varget but in the 5.56 case I would have had to really compress it. I opted to just use a 223 case instead.
 

jpk

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For this thread H335 for .223?

Here are some of the comments:

24.5-25 gr of H335 is what I use under the 55’s.

I just reloaded a batch of 5.56 up to 25.6gr of H335. (remember 5.56 is hotter than .223).

I am at 25.0 for 55gr. I've loaded higher but that gave the best accuracy for me.

25 gr of h335 with a 55gr fmj has been my go to load since 1994.

THIS......QFT

Only thing folks may find odd with the Hornady 55gr FMJ with can is that hornady puts the cannelure too close to the tip of the pill if you're loading to correct over all length and so its exposed and utterly useless.....

No big deal.....they run like a champ but the first time folks load em they look at their guage, look at the loaded bullet and scratch their head wondering if they did something wrong.....
 

jpk

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Holy hell! Yeah pistol powder in a rifle case with a rifle sized charge would probably blow up your gun every single time. Imagine if he did that in a large case round!

Now the question is, how did he make that bad a mistake?

It absolutely will cause an AR to blow up......

This is what happens when people leave powder in their powder dispenser.......and/or have multiple flavors of powder on their bench and accidentally reach for wrong jug......
 

mac1911

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THIS......QFT

Only thing folks may find odd with the Hornady 55gr FMJ with can is that hornady puts the cannelure too close to the tip of the pill if you're loading to correct over all length and so its exposed and utterly useless.....

No big deal.....they run like a champ but the first time folks load em they look at their guage, look at the loaded bullet and scratch their head wondering if they did something wrong.....
If you load to hornady manual for the 55 FMJ of 2.200" tbe cannelure lines up pretty well if your brass is trimmed to length.
 

jpk

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If you load to hornady manual for the 55 FMJ of 2.200" tbe cannelure lines up pretty well if your brass is trimmed to length.

Right and in doing so you're stuffing the pill into the case and creating higher pressures.

The NATO spec for 5.56x45 is for an OACL of 2.260 not 2.200



2.260 will barely fit into a mag so most people load to 2.255-ish

the spec is the spec....you start mucking with compressed loads and its a quick way to have a "bad day"
 

dcmdon

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All this talk of .223 vs 5.56 has me thinking.

Do any of you actually have 5.56 dies? Because if you take a 5.56 case, size it in a .223 die and trim it to .223 OAL, then you have a case that is externally a .223.

Which leaves wall thickness? Is a 5.56 case sized in a .223 die, cut to .223 length going to have a different internal volume than a .223 case prepped the same way?

I guess the bottom line is that when we talk about .223 vs 5.56, we need to think how our dies and trim lengths as well as our donor brass determine what we actually end up with.

I've always reloaded my .223 with mixed brass, paying no attention to if the parent brass is .223 or 5.56. My .223 / 5.56 shooting is always done inside of 300 yards so I'm not chasing a small standard deviation in muzzle velocity.

Thoughts? Wisdom??
 

jpk

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All this talk of .223 vs 5.56 has me thinking.

Do any of you actually have 5.56 dies? Because if you take a 5.56 case, size it in a .223 die and trim it to .223 OAL, then you have a case that is externally a .223.

Which leaves wall thickness? Is a 5.56 case sized in a .223 die, cut to .223 length going to have a different internal volume than a .223 case prepped the same way?

I guess the bottom line is that when we talk about .223 vs 5.56, we need to think how our dies and trim lengths as well as our donor brass determine what we actually end up with.

I've always reloaded my .223 with mixed brass, paying no attention to if the parent brass is .223 or 5.56. My .223 / 5.56 shooting is always done inside of 300 yards so I'm not chasing a small standard deviation in muzzle velocity.

Thoughts? Wisdom??

You are correct....there is variation in shell volume between manufacturers due to wall/web thickness

I played around with this subject years back and never saw enough variation in volume between sized shells at least in common calibers.....like 556

While trimming cases impacts chambering/etc it has no impact on internal volume of loaded shell because this is determined by depth that the pill is seated to in combination with thickness of wall/web of shell

The deeper you seat a pill for equal charge of powder you get increased chamber pressure hence compressed load/danger

Its also part of the equasion of why charge weght (and volume) decreases as weight (and length) of the projectile increases while OACL remains same (2.260 in the 5.56 example).

I'm sure there are folks that can/will go into far greater detail but thats the basics of it....imho
 

dcmdon

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great points.

Trimming to length doesn't really determine much with loaded ammo, as you described.

Trim length really only matters when it comes to helping us to MEASURE the weight of sized, trimmed cases. Deviations in weight are caused by deviations in wall thickness, which for an externally sized and trimmed case determine case volume.
 
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Here is the data for 5.56 (higher pressure allowed versus 223) and 24.5gr H335 powder, OAL=2.2 inches, and your bullet.
The unknown factor here is the case capacity measured in grains of water - using the default case capacity.

P.S. Don't blame me if this advise blows up your gun. I am not a pro at this.
 

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