Crimped Ammo & Accuracy

[Phil3]

I have some Hornady 223 Remington 55 grain soft point (#80255). It is crimped ammo. What kind of effect does crimped ammo have on accuracy? If crimped ammo has a negative effect that can be seen at 100 yards, I will sell the 50 rounds I have. It would be shot out of a Howa bolt action in a bedded stock on a mechanical rest.

Phil

 

[bigedp51]

Load some ammo of your own without crimping the bullets and conduct a side by side test.

I'm saving my military crimped ammo for the end of the world or Zombie attacks.
(I have lots of crimped ammo, that Mayan calendar end of the world thingy was a bust)




Do .40 S&W taper crimps count? :

 

[Phil3]

Load some ammo of your own without crimping the bullets and conduct a side by side test.

I never crimp anything and have no crimping die. I am not much interested in conducting a side by test, only hoping to glean some info from someone who had knowledge or experience in the area.

Phil

 

[Jeff A]

I'm not a crimper nor do I play one on TV. I just will say that shot to shot consistency depends on even neck tension (Among other things) and would be more difficult to obtain with crimping. I have not personally tested this. YRMV.

 

[bigedp51]

Load some ammo of your own without crimping the bullets and conduct a side by side test.

I never crimp anything and have no crimping die. I am not much interested in conducting a side by test, only hoping to glean some info from someone who had knowledge or experience in the area.

Phil

You have the .223 rifle, you have crimped factory ammo and your own tuned "non-crimped" reloads and your asking how crimped ammo shoots.

Why don't you answer your own question? ???

I have two questions for you.............

1. What kind of gas mileage will I get in my Ford Ranger truck with Mobil high test gasoline?

2. How many competitive shooters in this forum crimp their ammo or use factory "Training Ammunition" that is crimped?

Hornady Training Ammunition 223 Remington 55 Grain Soft Point Box of 50
http://www.midwayusa.com/product/366197/hornady-training-ammunition-223-remington-55-grain-soft-point-box-of-50

 

[Link]

You have a interesting question there.

However if I only had 50 rounds I would shoot them as sighters or to dirty my barrel before target shooting.

I wish I had 5000. lol
Link

 

[lusciousXspot]

Seriously?
50 rounds of ammo, from a Howa at 100 yards, and you are worried about accuracy effects of crimping? Have you run them over a concentricity gauge? Weight sorted and then sorted by COAL? Are you competing with these 50 rounds? Money, prizes or a national record at stake? What happened to occasionally pulling the trigger just for the joy of it?
Seriously.

 

[Luke_NL]

C'mon guys, that 50 round-count is a solid 0.2 pct of the barrel's competetive life span... ;D

 

[coford]

I will answer the question you asked. I have shot both taper crimped and factory crimped ammo in several AR-15's and a Savage bolt gun. The factory crimped stuff shot 1.5" to 2" but that was probably all the ammo was capable of with or without the crimp. I taper crimp AR ammo for 3 gun competition and coyote calling and I have not noticed any loss of accuracy on the taper crimped ammo VS the same ammo not crimped. Both my bolt gun and my AR will shoot the taper crimped, carefully loaded ammo into less than 1/2" at 100 yards. The reason I taper crimp for my AR is that I have found several bullets pushed back into the case so I taper crimp to prevent it. It also may help with feeding when the chamber on my competition gun gets dirty - just a theory.

 

[Phil3]

Load some ammo of your own without crimping the bullets and conduct a side by side test.

I never crimp anything and have no crimping die. I am not much interested in conducting a side by test, only hoping to glean some info from someone who had knowledge or experience in the area.

Phil

You have the .223 rifle, you have crimped factory ammo and your own tuned "non-crimped" reloads and your asking how crimped ammo shoots.

Why don't you answer your own question? ???

I have two questions for you.............

1. What kind of gas mileage will I get in my Ford Ranger truck with Mobil high test gasoline?

2. How many competitive shooters in this forum crimp their ammo or use factory "Training Ammunition" that is crimped?

Hornady Training Ammunition 223 Remington 55 Grain Soft Point Box of 50
http://www.midwayusa.com/product/366197/hornady-training-ammunition-223-remington-55-grain-soft-point-box-of-50

You must be joking. You really want me to compare the factory crimped ammo to my own loads that are not crimped and conclude from the results how crimped ammo shoots vs non-crimped? Such a test would prove absolutely nothing. The two sets of rounds are different in EVERY way, powder, powder volume, bullet, primer, all of which can affect results, much less crimping.

Also, I never said "tuned" loads. Your comment on gas mileage is completely irrelevant, contributes nothing, not even a hint of humor..., if that was the intent. Nor does comment #2 contribute anything.

My box of #80255 does not say "training" on it.

Phil

 

[Phil3]

Seriously?
50 rounds of ammo, from a Howa at 100 yards, and you are worried about accuracy effects of crimping? Have you run them over a concentricity gauge? Weight sorted and then sorted by COAL? Are you competing with these 50 rounds? Money, prizes or a national record at stake? What happened to occasionally pulling the trigger just for the joy of it?
Seriously.

Yes, seriously, but I can see your response is not. 6mmBr has earned a reputation for being largely free from sarcasm, insults, ridicule, etc., but I also know the Forum Boss as of not so long ago had his hands full dealing with it. Two out of eight responses here are non-helpful, and things I have no use for. Thanks Gonzos for your useful information.

Phil

 

[Glenn Powell]

For what its worth, my 300 WinMag will shoot 180 Hornady Interlocks MOA with a crimp, and 2"+ without a crimp. If the bullet has a groove for a crimp, I will at least try crimping just to see what happens. You never.

 

[CT10ring]

Phil3, there is something odd in your many wide ranging posts. Would you be kind enough to state your intentions. There seems to be much more than shooting, more like mining responses here for attribution, or later quoting and use of same for other purposes. Just one man's gut feel. Thank you.

 

[CT10ring]

Phil3, there is something odd in your many wide ranging posts. Would you be kind enough to state your intentions. There seems to be much more than shooting, more like mining responses here for attribution, or later quoting and use of same for other purposes. Just one man's gut feel. Thank you.

"I never crimp anything and have no crimping die. I am not much interested in conducting a side by test, only hoping to glean some info from someone who had knowledge or experience in the area."

Phil

one of many posts that are odd in the opposite opinion expressed by the OP. My suggestion: No more replies to this person/factoid.

 

[Phil3]

Phil3, there is something odd in your many wide ranging posts. Would you be kind enough to state your intentions. There seems to be much more than shooting, more like mining responses here for attribution, or later quoting and use of same for other purposes. Just one man's gut feel. Thank you.

I don't know what you see as "odd". Please elaborate. My intentions in my posts are as they read, nothing more.

Phil

 

[Phil3]

Phil3, there is something odd in your many wide ranging posts. Would you be kind enough to state your intentions. There seems to be much more than shooting, more like mining responses here for attribution, or later quoting and use of same for other purposes. Just one man's gut feel. Thank you.

"I never crimp anything and have no crimping die. I am not much interested in conducting a side by test, only hoping to glean some info from someone who had knowledge or experience in the area."

Phil

one of many posts that are odd in the opposite opinion expressed by the OP. My suggestion: No more replies to this person/factoid.

I was the OP. I wanted info from others on experiences with crimped vs non-crimped. I am not set up to test. And the problem is...? If you feel I have some ulterior motive (not), in my posts, then don't reply. If others wish take your advice and don't want to reply to me, OK, I'll go someplace else.

Phil

 

[Lapua40X]

... What kind of effect does crimped ammo have on accuracy?
Because crimping often produces a greater amount of neck tension and the distribution of tension cannot be assumed to be constant over the circumference of the neck, the crimped ammo is unlikely to match the accuracy potential of a carefully handled evenly seated uncrimped bullet and the extreme spread of the group on target can be expected to increase as the distance to the target increases. The degree of inaccuracy will be less important for a large target (e.g a pie plate) than for a small target (e.g. a 1 inch circle) over the 100 yard distance so whether or not it can be "seen" at 100 yards depends on the size of the ten ring.

 

[CT10ring]

PHIL 3
either you are the:

1. least curious shooter posting
2. an amalgam of persons/bureau gleaning quotes here on 6mmbr.com detrimental to 2nd amendment rights under other pretenses.
3. lazy

So, what is your determination of the many responses to varminting hunting - Nothing. Please refute. and answer the question.
What are your intentions, posting here. Questions, no answers. Easy determination of end game.

 

[CT10ring]

I'll reply as I see fit.

 

[Phil3]

either you are the:

1. least curious shooter posting
2. an amalgam of persons/bureau gleaning quotes here on 6mmbr.com detrimental to 2nd amendment rights under other pretenses.
3. lazy

Absolutely none of the above. The fact that you state those three choices illustrates how far off base you are about me. #1 is the polar opposite of the truth, #2 is so absurd, it is laughable, and #3 is about as untrue as #1.

So, what is your determination of the many responses to varminting hunting - Nothing.

Are you referring to posts I put in the varminting forum? If so, which one?

Please refute. and answer the question.
What are your intentions, posting here. Questions, no answers. Easy determination of end game.

You call my posts "odd"? What you are writing and how you are writing it (whatever it is...) is bizarre.

Phil