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Old 08-24-2018, 11:44 AM
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Israel Putnam Israel Putnam is offline
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Originally Posted by 7.5x55 Swiss View Post
Really? The V-Max are almost twice the cost of the Z-Max on Midway. Wonder why the V-Max is pricier when they're the same.
You’ve just stumbled upon one of the greatest varmint ammo reloading secrets ever.

The Z-max is cheaper because the zombie craze has died down and now the zombie marketed bullets are cheaper.

The Z-max and V-max are the same, the A-max is different from those two.
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Old 06-23-2019, 07:31 PM
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my friend got a 1-7 twist 18" SS upper for a DMR type rifle.
He has been using heavier bullets but getting poor results.
He tried lighter bullets and got better results.

Im thinking he might need to increase powder charge on the heavier ones.


He really needs a chrono..

any ideas?

Example of good groups and load data and bad groups with ammo data.
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Old 06-23-2019, 10:45 PM
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Originally Posted by SCPigpen View Post
my friend got a 1-7 twist 18" SS upper for a DMR type rifle.
He has been using heavier bullets but getting poor results.
He tried lighter bullets and got better results.

Im thinking he might need to increase powder charge on the heavier ones.


He really needs a chrono..

any ideas?

Example of good groups and load data and bad groups with ammo data.
A chrono always helps when developing loads. What bullets and powder is he using? What brass? Primers?

I (finally) completed my "in the wild" SPR clone a few months ago. It is shooting dime sized groups at 200 yards. The load is the same as in my XTC service rifles; LC case, Rem. 7-1/2 primer, currently 24.0g Varget and a Sierra 77g Matchking. Muzzle velocity right around 2750 out of the service rifle.

Who is the barrel supplier?
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Old 06-24-2019, 11:21 AM
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Originally Posted by AZ_HighCountry View Post
A chrono always helps when developing loads. What bullets and powder is he using? What brass? Primers?

I (finally) completed my "in the wild" SPR clone a few months ago. It is shooting dime sized groups at 200 yards. The load is the same as in my XTC service rifles; LC case, Rem. 7-1/2 primer, currently 24.0g Varget and a Sierra 77g Matchking. Muzzle velocity right around 2750 out of the service rifle.

Who is the barrel supplier?
its a PSA barreled upper so Im not expecting too much. Based on the smaller group pictured and one other I did not photograph, it has some potential.

The spec of the ammo is pictured
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Old 06-24-2019, 09:14 PM
AZ_HighCountry AZ_HighCountry is offline
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I only see 2 groups but 4 different load types. How did all compare?

Is he 100% certain it is a 7 twist and not mismarked? I could never get 75s to group in a 9 twist whereas anything 69 and smaller held tight.

How many rounds through the barrel?
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Old 06-23-2020, 02:21 PM
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I have been reloading for about 30 years, but only hand gun ammunition. For the last four years I have been using Hodgdon Hi-Skor for my .380 ACP and 38 Special reloads.

A couple of years ago I started reloading 9mm. With the start load (3.3 grain, 115 grain bullet) the ammunition ran fine through my 9mm carbine. However, when I ran it through a newly acquired M&P 9 Shield, I got 100% failure to extract. Incrementally increasing to the load maximum (3.7 grains), I got about 50% stovepipes or similar malfunctions, but they did extract.

The pistol runs fine with commercial ammo. Aside from changing powder, are there any recommendations? Thanks.
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Old 06-23-2020, 03:51 PM
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Use something like Unique or Universal but you don't want to change powders

So, if you are using a plated or jacketed bullet and not a lead alloy bullet, use the Lee Precision Factory Crimp Die
It will make the ammunition uniform

But I would change powders, which you reject
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Old 06-23-2020, 04:06 PM
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I agree about changing powders. The fact your at max and the gun still doesnt cycle, kind of shows that.

Looking at the burn rate charts, Hy Skor seems to be one of the faster powders, maybe its burning out to quick.

Ive mostly used either 231 or Unique for most of my auto calibers. And anymore, I use Unique for just about all my handgun "blasting/practice" ammo, auto or revolver.

Trying to keep things simple and use fewer powders across as many different calibers as I can.

My 9mm load these days is 5.5 grains of Unique under a 124 grain FMJ. That load seems to work well across all my 9mm handguns and Ive not had any cycling issues due to it.
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Old 06-23-2020, 04:32 PM
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Unique is my all round go to for handgun ammo when nothing else is available, but I have used blue dot when even Unique wasn't out there with good results.

That said, my favorite powder for 9mm is Power Pistol.
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Old 06-23-2020, 04:35 PM
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+1 on the Unique as a go-to powder for semi-autos

HS-6 is another one of my go-to powders.
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Old 06-23-2020, 04:38 PM
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Quote:
Originally Posted by Area Man View Post
+1 on the Unique as a go-to powder for semi-autos

HS-6 is another one of my go-to powders.
Yes, I had HS-6 that I hadn't tried yet before the fires, that and at least 25 pounds of other powders.
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Old 06-23-2020, 09:16 PM
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Thanks for the input.
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Old 06-27-2020, 07:09 PM
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Quote:
Originally Posted by ametrine60 View Post
I have been reloading for about 30 years, but only hand gun ammunition. For the last four years I have been using Hodgdon Hi-Skor for my .380 ACP and 38 Special reloads.

A couple of years ago I started reloading 9mm. With the start load (3.3 grain, 115 grain bullet) the ammunition ran fine through my 9mm carbine. However, when I ran it through a newly acquired M&P 9 Shield, I got 100% failure to extract. Incrementally increasing to the load maximum (3.7 grains), I got about 50% stovepipes or similar malfunctions, but they did extract.

The pistol runs fine with commercial ammo. Aside from changing powder, are there any recommendations? Thanks.
Could be a number of things. 9MM can be a pain with it's tapered body. Many carbines have loose chambers for better reliability, at least in my experience. Some things to check. Take one of your loaded rounds and rack it into the chamber. Pointed in a safe direction obviously. Extract the round and check it out. Is there a ring or contact point on the bullet or case body? Make sure your resizing die is fully lowered, play with overall length, make sure your crimp is sufficient. You could have a very tight chamber, though I have no experience with the M&P line. Good luck.
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Old 06-27-2020, 07:12 PM
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Quote:
Originally Posted by NCalHippie View Post
Unique is my all round go to for handgun ammo when nothing else is available, but I have used blue dot when even Unique wasn't out there with good results.

That said, my favorite powder for 9mm is Power Pistol.
Try out some Vihtavuori N320. Best 9MM powder I've used. Oh, so clean. Best subsonic powder for suppressor use also. But you pay for that happiness. My everyday loads are typically Tightgroup or Unique.
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