75gr 223 bullets too long?

[sudnrush]

I was trying to reload some of the midwayusa blemished 224 dia 75gr poly tip spitzer bt and they appear to be too long to load to allow to be loaded mag length for an ar15.
anybody seen this before?
in the picture is a loaded round and a loose 75gr and a 62gr for comparison

Nathan

 

[coldboremiracle]

Re: 75gr 223 bullets too long?

Uh, yes

. Almost all 75's aren't going to fit into an ar mag, unless you really squish them in there. thats why they are almost always loaded single into an Ar.

 

[sudnrush]

Re: 75gr 223 bullets too long?

thank you I did not know that. is it ok to shoot them squished down there like that?

 

[ChrisGarrett]

Re: 75gr 223 bullets too long?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sudnrush</div><div class="ubbcode-body">I was trying to reload some of the midwayusa blemished 224 dia 75gr poly tip spitzer bt and they appear to be too long to load to allow to be loaded mag length for an ar15.
anybody seen this before?
in the picture is a loaded round and a loose 75gr and a 62gr for comparison

Nathan </div></div>

Ah...yeah...if those are the 75gr AMAX, they will be too long for mag length. Some 75gr and 77gr bullets, like the Hornady 75gr HPBT and the Sierra SMK 77s, are mag length tolerant.

I load the 75gr AMAX out to 2.400" for my 1:7" AR, but I single feed them, obviously.

Just the nature of the beast.

Chris

 

[coldboremiracle]

Re: 75gr 223 bullets too long?

Probably would be counter productive, there is no shame in single loading.
If you seat them in that far you will loose all your room for powder and velocity will suffer greatly.
If you want a good long range magazine loadable load, go with a 68 or 69, they can be seated better for mags, or you may even try the 55 or 60's. I love the 75's, and shoot them singly, or mag feed the 52 A-max.

 

[sudnrush]

Re: 75gr 223 bullets too long?

well crap haha I wanted to use them in an spr and mag feed them and I dont have a 223 bolt gun so I guess I got 500 rounds I dont want to use haha

 

[coldboremiracle]

Re: 75gr 223 bullets too long?

Perhaps a transaction may be negociated .. . . . . . . .

Pending blemish approval of course

 

[ChrisGarrett]

Re: 75gr 223 bullets too long?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sudnrush</div><div class="ubbcode-body">well crap haha I wanted to use them in an spr and mag feed them and I dont have a 223 bolt gun so I guess I got 500 rounds I dont want to use haha </div></div>

Well, if you haven't loaded them all up, PM me if you want to sell them. I could use some more of them, blemished, or not.

Chris

 

[coldboremiracle]

Re: 75gr 223 bullets too long?

1st dibbs

 

[BCP]

Re: 75gr 223 bullets too long?

You sure those are 75? My loading book specifies 2.255 for the COAL with a hornady 75 grain hpbt.

I was under the impression that some 75's and 77's could be loaded to mag length.

 

[hilbillee]

Re: 75gr 223 bullets too long?

The Hornady 75 gr. HPBT can be loaded to AR mag length but the Hornady 75 gr. A-Max can't. It has to be loaded single shot, unless you have a bolt rifle that has a mag well long enough.

 

[Mongo3006]

Re: 75gr 223 bullets too long?

YOU CAN LOAD THE 75 AMAX.

If you want to here is an article I found a while back to load them.
http://www.shootingtimes.com/ammunition/st223_120606/index.html

(Hornady 75-gr. A-Max H4895 24.5 2861 2.273 Les Baer)
Try seating them to 2.275 that is the max for use in a magazine.

 

[ChrisGarrett]

Re: 75gr 223 bullets too long?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Mongo3006</div><div class="ubbcode-body">YOU CAN LOAD THE 75 AMAX.

If you want to here is an article I found a while back to load them.
http://www.shootingtimes.com/ammunition/st223_120606/index.html

(Hornady 75-gr. A-Max H4895 24.5 2861 2.273 Les Baer)
Try seating them to 2.275 that is the max for use in a magazine. </div></div>

Of course you 'can' load the bullet, the issue is is whether it's safe to do so? Hell, you could load 'it' with pistol powder if you wanted to, after careful work ups, but it's probalby not a wise thing to do.

The secant ogive is so sharp that to load for typical AR-15 mags (~2.260"), the edge of the case mouth is way ahead the bearing surface and over the ogive. This means that less of the neck is actually gripping the bullet's main body.

Besides leaving less room for powder, you're more suceptible to bullet setback due to a lack of traditional neck tension.

It can be done, but Hornady, Swift and Sierra already make mag safe 75/77s that one can safely use, so why not use those?

Remember, just because a person 'can' do something, doesn't make it the smart thing to do.

Chris

 

[sudnrush]

Re: 75gr 223 bullets too long?

they are definitely 75gr. I don't know the actual manufacture of the bullets. They are in the midwayusa blue boxes. I bought them on their big blemished bullet sale. the box says they are "blem bullets 22 cal (224 DIA) 75 gr poly tip spitzer bt."

I am with Chris I don't think I wana try shooting them at mag length as the mouth of the case is past the bearing surface.

so yeah I would like to sell them I have only used 1 bullet as you see in the pic. how ever I don't wana break the forum rules as I don't have 50 or 100 posts.

Thanks for all the help guys
Nathan

 

[ChrisGarrett]

Re: 75gr 223 bullets too long?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: sudnrush</div><div class="ubbcode-body">they are definitely 75gr. I don't know the actual manufacture of the bullets. They are in the midwayusa blue boxes. I bought them on their big blemished bullet sale. the box says they are "blem bullets 22 cal (224 DIA) 75 gr poly tip spitzer bt."

I am with Chris I don't think I wana try shooting them at mag length as the mouth of the case is past the bearing surface.

so yeah I would like to sell them I have only used 1 bullet as you see in the pic. how ever I don't wana break the forum rules as I don't have 50 or 100 posts.

Thanks for all the help guys
Nathan </div></div>


Hi, an hour ago, I took an unsized case that was pretty close to nuts on, but has the mouth sized to put about .001" of neck tension on a bullet, just enough to hold it in place.

I took a 75gr AMAX moly and slipped it in and was able to measure with a caliper, various COALs. As I pushed it in, I was able to get it to about 2.350" before it fell into the case under gravity. The case measured 1.770", so the neck was longer than typical and gives more surface area for gripping the bullet, than one would get with a case trimmed to 1.750".

More neck tension might have held it in place, at greater COALs, but that bullet is typically a NO GO at mag lengths of 2.260".

I'm sure that you have the 75gr AMAX, as Midway is a big buyer of Hornady Seconds and yours have a red poly tip, as does the AMAX in that weight and caliber.

Do what makes you happy, but I'd suggest getting the great Hornady 75gr HPBT or the milspec Sierra 77gr SMK with or without cannelure and load to mag length if you want to go with a mag safe precision bullet.

Chris

 

[sudnrush]

Re: 75gr 223 bullets too long?

Thanks Chris I am surprised that bullet didn't fall into my case must be the powder holding it up haha. It will be discarded and not used and I will look in to your recommendations.

Nathan

 

[hilbillee]

Re: 75gr 223 bullets too long?

He has the 75 gr. AMax. They are longer than the 75 gr. HPBT, which can be loaded to mag length for the AR, as can the 77gr. Sierra HPBT. I have both bullets and you can tell the difference just by looking at them. The best I can remember ( I don't have my Hornady manual close by) is that the 75 gr. AMax is loaded to an OAL of 2.330, while the 75 gr. HPBT is loaded to an OAL of around 2.250 or 2.260.