Author Topic: Different diameter 9mm bullets  (Read 880 times)

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Offline IDescribe

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Re: Different diameter 9mm bullets
« Reply #15 on: July 01, 2018, 11:24:16 AM »
According to ballistician Meghan Trainor, "Because you know I'm all about that base, 'bout that base,

That song is a guilty pleasure of mine. But yes, all about that base.    ;D

And let me see if I can find a hip-hop song on bullet to barrel fit.  ;)

Offline wdfwguy

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Re: Different diameter 9mm bullets
« Reply #16 on: July 01, 2018, 11:47:15 AM »
Interesting....

I only had time to just skim your post, but I'll go back later today and give it my full attention.  I'm always up for learning something new.

 :)

Offline MadDuner

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Re: Different diameter 9mm bullets
« Reply #17 on: July 02, 2018, 08:11:26 AM »
Thanks for the write-up Idescribe!

I will have to read it 4 more times before I can fully appreciate it though.

I am also interested in what - if any difference in accuracy can be attributed to powder burn rate?


Offline Wobbly

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Re: Different diameter 9mm bullets
« Reply #18 on: July 02, 2018, 09:00:31 AM »
Thanks for the write-up Idescribe!

I will have to read it 4 more times before I can fully appreciate it though.


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Offline wdfwguy

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Re: Different diameter 9mm bullets
« Reply #19 on: July 02, 2018, 11:07:46 AM »
To sort of get back on topic...

I think I'll order a sample pack on the Egglestons in .356, .357 and .358

I'll load them up identically and see if there's any difference in group size

Offline SoCal

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Re: Different diameter 9mm bullets
« Reply #20 on: July 02, 2018, 08:07:51 PM »
To sort of get back on topic...

I think I'll order a sample pack on the Egglestons in .356, .357 and .358

I'll load them up identically and see if there's any difference in group size

Good idea just remember that when you load the .358 to make sure you have enough bell on the case mouth that you do not shave the coating (been there, done... well you know the rest of the story).
If I had known how much better being retired is than working I would have done it FIRST.

Offline IDescribe

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Re: Different diameter 9mm bullets
« Reply #21 on: July 02, 2018, 09:52:26 PM »
Also, I don't recall what weight you're accustomed to shooting, but I'd stay down at the 124/125 range.   If you go to .358 on a 147, you may have trouble with its needing to be seated TOO deep when OAL is short enough to fit the CZ chamber.
« Last Edit: July 02, 2018, 10:35:30 PM by IDescribe »

Offline wdfwguy

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Re: Different diameter 9mm bullets
« Reply #22 on: July 02, 2018, 10:05:55 PM »
I'm generally shooting 124/125s

Offline IDescribe

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Re: Different diameter 9mm bullets
« Reply #23 on: July 02, 2018, 10:36:32 PM »
Fixed a type-o.  Too DEEP.  Too DEEP.  ;)

Offline Wobbly

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Re: Different diameter 9mm bullets
« Reply #24 on: July 03, 2018, 08:53:00 PM »
Too DEEP.  Too DEEP.  ;)


That's two DEEP.    ;D
In God we trust; On 'starting load' we rely.

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Offline IDescribe

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Re: Different diameter 9mm bullets
« Reply #25 on: July 03, 2018, 11:37:18 PM »
...if any difference in accuracy can be attributed to powder burn rate?

Not really??? 

There are plenty of faster powders that produce great accuracy.  And some not great.  There are plenty of slower powders that produce great accuracy.  And some not so great.  The two or three powders with the best reputation for accuracy in 9mm are slower powders (not THE slowest), but that's not the same as saying slower burn rates are more accurate. 

If you aren't going to name the powder, burn rate doesn't tell you anything, and if you DO name the powder, burn rate doesn't matter.  ;)

You would never want to assume you want a slower powder for better accuracy. ;)

Offline MadDuner

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Re: Different diameter 9mm bullets
« Reply #26 on: July 04, 2018, 10:27:21 AM »
...if any difference in accuracy can be attributed to powder burn rate?

Not really??? 

There are plenty of faster powders that produce great accuracy.  And some not great.  There are plenty of slower powders that produce great accuracy.  And some not so great.  The two or three powders with the best reputation for accuracy in 9mm are slower powders (not THE slowest), but that's not the same as saying slower burn rates are more accurate. 

If you aren't going to name the powder, burn rate doesn't tell you anything, and if you DO name the powder, burn rate doesn't matter.  ;)

You would never want to assume you want a slower powder for better accuracy. ;)

Fair enough.
I've been using either Unique or TiteGroup in my 9mm loads. I appear to have better accuracy with Unique - even though I can plainly see that the powder quantity of my loads cannot be as consistent as they are with TiteGroup.

I also have not seen any difference in accuracy between Berry's .356 projectiles and Extreme's .355 or Blue Bullet's .355s - all RN.

 I'm about out of powder and will need to restock.  What should I try next?

Offline IDescribe

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Re: Different diameter 9mm bullets
« Reply #27 on: July 04, 2018, 11:59:13 AM »
I also have not seen any difference in accuracy between Berry's .356 projectiles and Extreme's .355 or Blue Bullet's .355s - all RN.

I don't either, but mostly because I don't see top notch accuracy from plated bullets, period.  And Blue Bullets standard .355 sizing is undersized for 9mm, which reduces precision in a barrel that prefers standard or over-sized, so I would assume your barrel in that group.  ;)

ACME is top notch.  BBI is top notch.  Blue Bullets are also great bullets, generally speaking, and they now offer special order bulk packages of bullets sized .356, and we've always had the option of buying their .38/.357 bullets sized .358, which some here have used with great results.


I'm about out of powder and will need to restock.  What should I try next?

I have plenty of answers, but probably best for you to start your own thread titled "Powder Opinions for 9mm for  ___________________"  where the __________________ is occupied by whatever application you plan on using the load for -- 9mm minor action pistol, ultimate accuracy out to 50 yards, lowest recoil possible Steel Challenge, plinking, Self-defense, etc..   I'd answer here, but every time I derail a thread, Wobbly overnights me a venomous snake, and I think Georgia is running out of venomous snakes.  ;)

Offline coues52

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Re: Different diameter 9mm bullets
« Reply #28 on: July 04, 2018, 12:36:30 PM »
  great read on this  post..esp IDescribe article..Thank you..Danny B

Offline Wobbly

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Re: Different diameter 9mm bullets
« Reply #29 on: July 06, 2018, 07:54:25 AM »
I'd answer here, but every time I derail a thread, Wobbly overnights me a venomous snake, and I think Georgia is running out of venomous snakes.  ;)


Just the rattlers. We got plenty of copperheads left.

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In God we trust; On 'starting load' we rely.

Immature reloaders ask: What's wrong with this gun?
Mature reloaders ask: What did I do wrong ?