Is anyone using H335 ?  If so, what are you using for 55gr FMJ ?  The Hornady book says 20.8 - 22.4, the label on the bottle says 25.3, and an old AR15 magazine says 23.9.  So.....what sez the hive ?

Under the Armory tab above scroll down and you will find the Reloading section.  What you seek is there. Consider posting the thread there.  Yes, I use H-355, but have not worked up loads with that particular bullet.  I would guess you are seeking an M193 clone load.  But the discussion would be best handled there, as you will get more responses than just mine.  Given that it is a Hornady bullet, I would err on the side of using its data and begin with its starting load and work up.

Every reloading manual will list a different load.

Read the details.  They use different brass, different primers, shoot the rounds in different rifles, etc.  All that affect pressure.  So start at the beginning load and work up to see what is reliable and accurate and safe in your rifle.

My son uses H335 for 55 and 62 grain bullets in his 20" HBAR clone.

You can't go wrong with H-335. Its a good solid ball powder and it's been one of my go-to .223/5.56 powders for decades. I settled on 23.5 grns. If you load at 25.3 grns like the container says your fired brass very likely will show signs of high pressure. It did for me mainly because I have mixed brass that is mostly military mixed headstamped.

Problem with the brass is it is of course thicker than commercial so less space = higher pressure. The good news is most AR's with run this powder as light as 21.0 grains...it will function fine you just won't be getting real high velocity. I typically buy 55 grn FMJ's 5000 at at time from Wideners and H-335 by the 8 pound jug, combine that with any small rifle primer and a Dillon press and life does not get much better. Be sure to trim your cases.

Back on topic. Long story short H-335 will feed-fire & eject with a very wide spread in grain weight. Like I mentioned, I settled on 23.5 grns. Accuracy is 2.5"-3" at 100 yds from my Noveske barreled SPR. Not real good? That's because the bullets are bulk FMJ's not due to the powder. This above mentioned combination functions 100% when fired through my 10.3" DD SBR all the way through an 11.5" SBR a 16" BCM L/W, the 18" Noveske and last a 20" Colt full size.

It's a good powder and is right at home pushing 55 grainers in anything from a 1/7 10.3" barrel to a 1/12 20" barreled rifle. The only hard part is finding that powder these days. I haven't seen any in southern Idaho for some time. I'm glad you have some to load with.

I use it almost exclusively in my varmint AR's. Run mostly 45 and 50 gr bullets, and I'm .223 AI, so my loads won't help you.  It's a really easy powder to use though, as it flows like water in a powder drop.  I haven't worked up any loads yet for use in my 5.56's, but will in time.  The thing about 5.56 loads is that it's iffy, if you are trying to duplicate factory 5.56 velocity.  Primers back out of pockets at that pressure when not crimped in place. You may already know this though.  That would be true of any powder in 5.56, not just H335.

It's my go-to powder for loading 55gr Hornady FMJ/BT. I load 25 grains. I've found it to be quite accurate across all headstamps (LC and commercial) and in every AR I have from 20" to 10.5" and everything in between. I use CCI small rifle magnum primers.

As always, work up your own loads to your own rifles.

24.7gr with bullets loaded to the cannelure with a light crimp.

Hodgdon's data at 25.3 shows no pressure signs in my loads using RP or LC brass. Like mentioned a search will show that the most popular H335 loads with 55 FMJ's is from 24.5-25 grains. I load Hornady 55 FMJ's at 25 grains of H335 and it shoots well in all rifles. Hornady 55 FMJ's have a blunt point and the overall length from 2.200" to 2.230" or to mid-cannelure works fine. Military type FMJ's have a longer sharper point and the overall length for them is around 2.250". I use RP 7 1/2 primers with my loads. Do start lower and work up but Hornady's data is anemic for AR loads but may show the results they list for a bolt action rifle?

25 h335 under a hornady 55 fmj is what i use as do a lot of other people.

I do 25.5 grains and I'm not getting any pressure signs. It's my favorite 55 fmj bullet powder and runs like water in my Dillon 550.

I was at Bass Pro in Ft. Myers today.  They had about 12 bottles on the shelf.  I bought 2.  Price went up to $32 lb from $26.  Thanx Obama.....but at least they had some.  I think it might work out cheaper to buy white box ammo from Wally World @ $43 and change / 100.

I like it as it meters very well.

62*F
.222/5.56MM 55gr FMJBT W/C Hornady
H335 24.1gr
Trim 1.750 +/-.002
OAL 2.219 (mid cannalure)
Light crimp
CCI 450 SRM
2677AVG FPS AR15 16 inch 1/9 twist barrel

 

This is my go to powder for .223, But I'm using the 55gr Hornady SP's with 23.5gr's....FMJ's are similar, just find the load your gun likes!

My economy load is 21.5gr of H335, LC once fired brass, CCI No. 41 primers and Hornady 55gr FMJ.
Easy on the brass, but murders the water filled milk jugs.

When I first got into reloading I experienced the same thing. I picked up 3 manuals found a safe charge weight between the 3 manuals, in conjunction with what the max charge listed on the bottle. Loaded 10 and had them chrono'd, then worked up. Turns out the Lyman manual is what I cross reference the most, and they have the results similar to mine. I was also looking for a single throw across the board.

25.5 gr h335
LC brass 1.750
OAL 2.260 for most
crimp
Hornady 55gr fmj, sp, vmax
Nosler 55gr fbhp, ballistic tip
Evergladesammo.com  55gr version 2 round nose

Chrono averaged around 2800 out of a 14.5"
As always, work your way up.

My go to load too.

I've also found 23.5 gr is very accurate in my barrel.

That Bass Pro in Ft. Myers used to be a pretty good place to get ammo & reloading supplies.  Anymore, they seem to want to push the envelope to see how ridiculously high they can jack-up their prices.  $32 a pound for H-335 is just silly!  

HINT:  If you live in this area and don't mind driving down to Naples near I-75 mile marker 101, you can buy a 8 lb. jug of CFE-223 for $23 a pound at Everglades Ammo.  CFE-223 has all the good characteristics of H-335 and yields excellent velocity & accuracy.  They don't ship powder & primers, you have to pick it up at their little shop, but no shipping charges or HAZMAT fees makes it a very good deal.  They seem to always have a good supply in stock.

BTW, I've been using 25.5 gr's of H-335 with 55's for years with excellent results.  CFE-223 needs a little more, in the 27 gr range, to do the job with the same results.

25 gr is my go to load

I used to load a lot of H335 but it is temperature sensitive and would give me cycling problems when temps climbed above 80, just an fyi.

I'd do the safe thing and start at the bottom and work you way up.  You can look up the OCW loading method and he starts typically at the lower mid range just due to the math and works his way up to one load over maximum published.   Safer than just throwing 0.3 grains under max into a bullet and heading out to the range in my book.

This man is correct. 25 gr is not a hot load. Well under 3k fps in a 16" gun ( I've got the data somewhere - maybe around 2800). It is a progressive loader,favorite.

I use tons of H335 with 55grn SPR SP bullets and my 14.7" and 16" carbines as well as my 20" A4 and all like a charge of 25.1grns in LC brass with a Win SR primer.  It's my general purpose shooting round and I've loaded thousands of them at that level.  Hodgdon's load data (both on-line and their 2009 book) list the powder range from 23.0grn starting - 25.3grns max in a Winchester case with Win SR primers and an OAL of 2.200".

Same here, well known load. I can go to 26 grains safely in 5.56 chambered rifles, 25.5 grains shows no pressure signs in a seemingly tight chambered 223 T/C Contender. I load 25.0 grains with Wolf/Tula SRM, mixed brass. Works in everything, gives good accuracy and seems to be a moderate load.

I've tried a lot of variations, but what works best for me is 23.5gr. of H335 using Hornady FMJBT projectiles in LC brass w/ CCI primers.
It seems to work well in all of my .223's including my 7.5" pistol, 16" carbine & 24" bull barrel.

My brass stays consistent & I can reload many times without trimming.  I've tested a few samples of brass & after 10 reloads, it is still well under max length.

25 gr of H335 with the 55 gr fmj is kind of a standard AR15 load,However-start low and work this up in your rifle .
I don't know if you have a 223 chamber or 556 chamber,but shoots fine in all my AR's
Later
John

25.0grs H-335 with a Hornady 55 FMJ is my standard load.

I've currently settled on 23.5 gr of H335 is very accurate load so far even with Winchester 55gr FMJBT's.  I haven't worked anything up at the 25.0 gr range yet or tried it with any of the Hornady bullets.

My best accuracy with Hornady 55 gr FMJ is with 24.4 gr H335. I'd like to push them faster but I don't want to it at the expense of accuracy.

I cant find H335 around here any longer. There was some about a month ago but it was snatched up rather quickly. I have purchased some LT-32 at Cabela's recently but have not fired any rounds yet with it. It got good reviews in Handloader magazine for 223/5.56. We shall see what happens.

V

I've had a hard time finding it as well. LGS got a few pounds in last week and I snatched it up. Selling for $24.99 pound, I thought that today, that 's a pretty good deal.

I found an OCW node at 25.4 under MidSouth's 55gr. Varmint Nightmares yeilding 3110fps from my son's 16" Armalite.  With Hornady 52gr. Vmax's the sweet spot is 26.0gr., I don't see the velocity in my notes though.  My AR10 didn't care for H-335 but the 15 loves it.