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6X45 Load Data Compilation


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#21 OFFLINE   geepee3

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Posted Oct. 08 2016 - 03:19 PM

So you're just using a .223 bushing die with .243 range bushings?
Reloading data seems pretty sketchy for 6x45. Can't seem to find just what l want. Also, as popular as .243 is, I expected to see a
better selection from Sierra.

 

Yes, I'm using a Redding Type S .223 bushing die with .243 range bushings.

 

IMG_2586_zps3ae67a46.jpg

 

This was my original set up. Redding Type S .223 bushing die, .243 range bushings, Redding .177-6 mm sizing button.

The sizing button is extra. I no longer use it in favor of the mandrel expander.

I found I get better concentricity with the mandrel because it free floats in the die. 

The Redding expanding button screws on the shaft, so it is solid and may not center itself.

 

As to the specific bullets you want to use.

The Sierra 95 gr. bullets are really long for the 6x45mm cartridge in an AR platform.

There seems to be no load data for that specific bullet with the info I have. Sorry.

87 gr. is the highest weight I shoot in this caliber.

I went 6.8 SPC for bullets in the 90 gr.-120 gr. weight class.

And 110 gr.-168 gr. is in .308 for my M1A. 

 

Glenn 




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#22 OFFLINE   GLShooter

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Posted Oct. 08 2016 - 06:52 PM

Sierra lists the next lightest Matchking bullet to 95 gr as a 70 gr.

 

 

Yes in the 6mm but you asked at some place on a 77 223 vs a 95 6MM.

 

 

 

So you're just using a .223 bushing die with .243 range bushings?
Reloading data seems pretty sketchy for 6x45. Can't seem to find just what l want. Also, as popular as .243 is, I expected to see a
better selection from Sierra.

 

Not all Redding 223 Type S bushing dies are cut big enough for 6 MM. They NORMALLY are but Ritch has one that will not do a 6 MM case neck. The 223 die can be used in most cases from 6 MM down to 20-223 and 17-223 but the 17 is VERY touchy and a fellow is better off with a true 17-223 die for those. 

 

Not sure what you are looking for specifically. Any of this data is translatable to other bullets with similar weight with a bit of fore though and caution. The 6X45 was SAAMI'd on 1-18-11. Prior to that it was a true wildcat. That being said and done no one other than a few boutique outfits load commercially for it. Another choice of loading data is the 6MM TCU that can be used with some adjustments. 6 MM bullets have one of the highest choices thanks to the BR guys . I do believe only the 30 caliber may be more but looking at every bullet company out there the 6MM is strong. I think there are some better HUNTING bullets out there in 6 MM but by and large the Sierra Bulletsmiths have got it right IMHO.

 

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#23 OFFLINE   ToddMNicoll

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Posted Oct. 09 2016 - 11:02 PM

I shoot 77 gr Sierras in .223. I have the same sizing die and mandrel expander set up as you courtesy of Glen Zediker. I was hoping to use something heavier than 77 gr in 6x45, the heavier bullets are more efficient. What about a 90 grain Berger in 6x45? Do you know the length of the 95 gr Sierra? What if you trim the tips of the bullets to seat them out a little further?

#24 OFFLINE   geepee3

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Posted Oct. 10 2016 - 07:07 AM

I have not tried the two 6mm bullets you listed.

The Hornady 6mm 87 gr. HPBT and Sierra GameKing 6mm 85 gr. HPBT are the highest weight projectiles I have for my 6x45mm AR's.

 

Glenn

 

 



#25 OFFLINE   GLShooter

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Posted Oct. 10 2016 - 12:49 PM

OK. What's your goal? Paper punching at what distance? Look at your online references for projected speed. Pick the bullets they use and get the BC from the maker on line. Length is only part of the equation. Ogive to tip will determine if the bullet is too long to load in a given magazines. Some bullets can jump a long distance others cannot. You cannot cut the front of a standard bullet down. If it is plastic tipped at times you can remove the tip but that costs BC.

Heavy bullets take up case capacity that adds pressure and will cost you in speed. I made some calls and got some Berger numbers that I will post up tomorrow as Monday is babysitting day for me.

Now the cold hard truth. You can't dry lab accuracy. On paper you can pick a winner. On target it may suck thanks to your barrel, seating depth and powder choice. We can set here for the next three years snd play Internet shooter. You are going to have to spend some money to find out what's behind the curtain. We can't pull the loading press handle and the trigger. Get your plastic out, order a barrel and large selection of powders and bullets and go forth and conquer.

Greg

#26 OFFLINE   ToddMNicoll

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Posted Oct. 10 2016 - 07:03 PM

I'm not new to reloading. You can trim the tips, it's called the meplat. I'm looking to build a target/sniper round out as far as I can accurately get it. 77 gr Sierras are good to around 600 yards. I was hoping for more from 6x45. Berger lists the bullet length of it's 90 grainer, Sierra does not. I am aware of the different aspects of length, that's why I wasn't asking about VLD bullets. If you aren't familiar with the bullets I'm asking about, leave the comments to someone that does.

#27 OFFLINE   GLShooter

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Posted Oct. 10 2016 - 07:52 PM

Actually I am familiar with the specs on the bullets. Trimming a meplant is for uniformity not decreasing length to any great extent. If you are stopping at 600 the best economical pill at easy mag length is the Hornady 87. I have shot hundreds of them at 500 out of a 6X45 and out of a 6X6.8 playing the same game. I started shooting the 87 in a 6X45 in 1985 at local matches later at the national 3Gun level l and have used them extensively in LEO sniper matches. I moved up to the 95 SMK and Bergers when I went to the 243 LBC. I'll post up the numbers on the Berger pills tomorrow. Along with the Sierra SMK. Realistically for me if it will work at 500 it'll do fine right out to transonic range that hovers around 900 or so depending on atmospherics.

Greg

#28 OFFLINE   ToddMNicoll

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Posted Oct. 10 2016 - 09:20 PM

I won't use anything less than Sierra. They are the best bang for the buck. If I have to step up a notch to get a match bullet in a more usable weight, I'll go up to a Berger. Trimming the meplat is for uniformity, I understand that. If you can get .005" or .010" off of the nose to make them usable in the mag, then it's worth doing in my opinion.

#29 OFFLINE   GLShooter

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Posted Oct. 10 2016 - 09:47 PM

I'll post up my bullet file on 6MM tomorrow. It's a broad spectrum compilation for you to look at for decisions on fit. Sierra makes some good shooting non-match labeled bullets you might look at. The good thing is with a 6X45 you won't over drive them.

What barrels are you looking at?

Greg

#30 OFFLINE   ToddMNicoll

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Posted Oct. 10 2016 - 10:26 PM

Kreiger.

#31 OFFLINE   ToddMNicoll

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Posted Oct. 10 2016 - 10:28 PM

Would it be bad form to post in another section asking if anybody had a load specifically for Berger 90 gr?

#32 OFFLINE   GLShooter

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Posted Oct. 10 2016 - 10:45 PM

Would it be bad form to post in another section asking if anybody had a load specifically for Berger 90 gr?

The reloading area would be fine but I can pretty well assure you that anyone shooting the 6X45 on here is watching this thread. The guys here chime in wherever questions come up as cross posting is counterproductive in many instances.

Greg


BTW I shot these just trying some powders a few weeks ago. I can shoot these magazine fed in a windowed magazine in my custom designed billet lower.
6X45%2095%20SMK%20AR%20COMP_zpsxpbn6s0n.

#33 OFFLINE   ToddMNicoll

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Posted Oct. 10 2016 - 11:09 PM

If you discount the ones that aren't touching, that's damn fine shooting. 100yards I'm assuming.

#34 OFFLINE   GLShooter

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Posted Oct. 10 2016 - 11:19 PM

If you discount the ones that aren't touching, that's damn fine shooting. 100yards I'm assuming.


Yep.

Greg

#35 OFFLINE   ToddMNicoll

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Posted Oct. 10 2016 - 11:19 PM

I did find the length of the Berger I was looking for on the JBM link. Looks very useful, thanks for that.

#36 OFFLINE   GLShooter

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Posted Oct. 11 2016 - 12:44 PM

This is a chart I worked up for my 6 MM bullets since I shoot them in so many different rifles and for so many different uses.   I use these a s a reference and have the original subject bullet set aside to allow for actual seating settings in the case and to allow me to monitor the movement of the lands over time. Each mew barrel is measured for distance to lands using the exemplar bullet and a Sinclair distance to lands tool with records of each kept on a separate note book on that barrel.

 

620MM20BULLET20CHART20GOOD_zps3cgqfm5w.j

 

I was curious on the Bergers you mentioned so I called my partner in St. George for some numbers measured off the bullets. He used a HORNADY COMPARTOR set up. Using this the distance from base to ogive will always be a bit longer then  real and the distance fro ogive to tip will always be a bit short. That is the reason I went to a case sized closer to bullet diameter for my measurements. Not perfect but much closer thanks to tolerance stacking.

 

Berger 87 VLD was 1.028 with base to ogive 0.506

Berger 90         was 1.087 with base to ogive 0.583

Berger 95 VLD was 1.124 with base to ogive 0.554

 

Greg



#37 OFFLINE   ToddMNicoll

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Posted Oct. 11 2016 - 12:59 PM

In mag fed rounds, is cartridge oal not going to be more of a consideration. Then cut the chamber to match? The Berger 90 gr match length that I found on Bergers site is 1.045". The difference then, between the Berger and SMK 95 gr, is .135". This sounds like what l want on paper, but like you said, I have to build the load and shoot it to see.a

#38 OFFLINE   GLShooter

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Posted Oct. 11 2016 - 01:10 PM

In mag fed rounds, is cartridge oal not going to be more of a consideration. Then cut the chamber to match? The Berger 90 gr match length that I found on Bergers site is 1.045". The difference then, between the Berger and SMK 95 gr, is .135". This sounds like what l want on paper, but like you said, I have to build the load and shoot it to see.a

 
Spot on. The chamber will dictate quite a bit also. As an example on the American 30 DTL, distance to lands,  on a 125 Sierra Is 2.285. On the Sierra 110 RN it is 2.208. 25 less grains of weight but that blunt nose hits those lands quick on the 110. The 6X45's I am shooting are long throated and will be that way until I get BHW to change the reamer design in the next few months.  We want them to shorten it up not that we will seat deeper but that we will have less overall jump across the board.  Designing chambers fro them has taught me a bit about the teeter totter of COL vs DTL out of a magazine. Bolt guns are SO much easier LOL.
 
I have shot both Bergers and SMK's in my rifles and could discern no visible difference in accuracy in any of the chamberings and for that reason I went with teh SMK. Obtaining eiter is not an issue as I have huge Berger and Sierra distributor that is a bench rest specialists. Anything I need is always handy at Bruno's for me plus they are only five miles away from the house.
 
Greg

PS: Food for thought. Designing a chamber to shoot XXXX bullet is frequently a first step in frustration. Oddly enough invariably the combination seems to never work. Who knows why but it is common.




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