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 6 x 45 mm AR (6-223)
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Hockeynick39
Advanced Member



USA
4669 Posts

Posted - May 29 2017 :  20:15:23  Show Profile  Send Hockeynick39 an AOL message Send Hockeynick39 a Private Message  Reply with Quote
Does anyone else shoot this caliber and what is your favorite load?

Ireload2
Senior Member

USA
285 Posts

Posted - May 30 2017 :  16:30:30  Show Profile Send Ireload2 a Private Message  Reply with Quote
I shoot a near identical round called the 6X47 Rem. The 6X47 Rem is about .030 longer from the base to the shoulder.

I shoot 23 grains of 4198 with 70 and 75 grain bullets. The rifle is a 40XBR Rem and is very accurate.
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Hockeynick39
Advanced Member



USA
4669 Posts

Posted - May 31 2017 :  06:23:44  Show Profile  Send Hockeynick39 an AOL message Send Hockeynick39 a Private Message  Reply with Quote
Have you ever shot the Speer 75 gr HP, #1205?
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Rapier
Advanced Member



USA
794 Posts

Posted - Jun 01 2017 :  11:19:23  Show Profile Send Rapier a Private Message  Reply with Quote
You might give a look at the 6 TCU in the rifle reloading data section. The 6x45 and TCU are pretty similar, both made from the 223 cartridge. The TCU was developed for use in handguns for silhouette shooting and uses a good many powders suitable for the AR platform, like H-335.
Ed

Life is simpler when you plow around the stump.

"Is life so dear, or peace so sweet, as to be purchased at the price of chains and slavery? Forbid it, almighty God! I know not what course others may take, but as for me, give me liberty, or give me death!"
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Hockeynick39
Advanced Member



USA
4669 Posts

Posted - Jun 01 2017 :  19:30:54  Show Profile  Send Hockeynick39 an AOL message Send Hockeynick39 a Private Message  Reply with Quote
quote:
Originally posted by Rapier

You might give a look at the 6 TCU in the rifle reloading data section. The 6x45 and TCU are pretty similar, both made from the 223 cartridge. The TCU was developed for use in handguns for silhouette shooting and uses a good many powders suitable for the AR platform, like H-335.
Ed



H-335 is dirty as hell!!!!!! I have a little left and am using it up as quick as possible! I actually like using H322 better for the cleanliness in an AR. The primary reason I was asking was, I am thinking of going to one bullet for ALL game in this cartridge and the Speer 75 gr HP seems to fit that bill. MidwayUSA is listing it as a medium game bullet, however, Speer lists it as a Varmint/ predator bullet only.
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budlight
Advanced Member



USA
1633 Posts

Posted - Jun 03 2017 :  23:51:44  Show Profile Send budlight a Private Message  Reply with Quote
I have a local friend who I met through a shooting forum. He started out with the 6mm 223 with a ar-15 platform and 20 inch comp SS barrel. He gave me this data and he has since added a 6mm AR turbo which is the 6.5 Grendal case necked down to 6mm. Very substantial cost difference to just add about 6 grains of powder more than a 223 case.

I personally researched all the 223 variants and I even owned and reloaded My 7mm TCU which was limited because of the 14 inch barrel and single shot as a pistol. It was more for high powered pistol silhouette target shooting. Because I have an excellent 243 win sps 700 with a 26 inch barrel I could not see buying a 6mm X 45 cal

Well anyway here is the data and he told me that Ramshot TAC was a good choice, but with these same powder loads he lost about 6% on velocity on lighter weight bullets VS x-terminator powder. He never shot much in the way of 80gr and greater where he said that is where TAC started to shine.

Barrel length he owned: 20”

For 16” barrel of friends he saw a reduce velocity by 5% to 6% (ca 120 -150 Fps).

For 24” barrel increase velocity 3% to 4% (ca 90 -110 Fps)

Powder: Ramshot X-Terminator.

Bullet weight: 60 grains.

Start load: 26.1 grains (2800 – 2900 ft/p/sec)

Maximum load: 29.0 grains (3075 – 3175 Ft/p/sec). compressed loads.

Bullet weight: 70 grains.

Start load: 25.3 grains (2650 – 2750 ft/p/sec)

Maximum load: 28.0 grains (2900 – 3000 Ft/p/sec). compressed loads.

Bullet weight: 75-80 grains.

Start load: 24.3 grains (2550 – 2650 ft/p/sec)

Maximum load: 27.0 grains (2850 – 2950 Ft/p/sec). compressed loads.

Bullet weight: 85 grains.

Start load: 23.4 grains (2500 – 2600 ft/p/sec)

Maximum load: 26.0 grains (2700 – 2800 Ft/p/sec). compressed loads.

Edited by - budlight on Jun 04 2017 00:03:39
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Kosh75287
Advanced Member



USA
739 Posts

Posted - Jul 19 2017 :  19:49:55  Show Profile Send Kosh75287 a Private Message  Reply with Quote
I've always wanted a battle carbine in that caliber. I sorta figured that, at real fighting ranges, it'd do everything the 5.56x45 would do but better.

God bless Jeff Cooper

Carpe SCOTCH!
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Ireload2
Senior Member

USA
285 Posts

Posted - Jul 20 2017 :  08:24:51  Show Profile Send Ireload2 a Private Message  Reply with Quote
Yes since my rifle will not handle heavier bullets I have tried about all of the 70 and 75 grain bullets except for the latest plastic tipped bullets.
The Speer 1205 has a large open hollow point so it is not as streamlined as some of the others but it is very accurate. Another bullet that is cheap and is very accurate is the Hornady 70 grn Spire Point. The only plastic tipped bullet I have tried are the Nosler 70 grn Ballistic Tip. They are also very accurate but no more accurate then the Hornadys.

Considering your comment in a later post the Speer 75 HP bullet was originally listed as a soft swaged bullet meaning the core was made from dead soft lead. The open tip and the soft lead means it will blow apart on any target. It is definitely not any sort of game bullet.


quote:
Originally posted by Hockeynick39

Have you ever shot the Speer 75 gr HP, #1205?


Edited by - Ireload2 on Jul 20 2017 08:28:46
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