6mm x 45mm Range Report and Field Results

Bowhntr6pt

Bowhntr6pt

Well-known member
Been taking an interest lately in my 6mm x 45mm, I've had it for a long time. Wanted to try the Sierra 90gr TGK's but they are too long so I went with the Nosler 70gr BT's to try. I have several worthy powders but today I tried AA2200 and IMR 8208XBR.

The rifle has an 18" RLG barrel, I just added a Timney trigger and Vortex Viper PST. I forgot my shooting bags but I was able to made due. Set the Chrony up and fired about 35 rounds. The AA2200 turned in good groups with the best at .750" and runs about 2960 FPS. However, I guess the burn rate is off as it won't lock the bolt back (never any cycle issues with this rifle). The 8208XBR runs strong and turned in some good groups considering. Speeds were 2788 FPS and none of the loads showed any signs of pressure despite being close to published max... I have room to go a little hotter.

The rifle...



The ammo...



Best 5-round groups...



Of course the best test of all is on game so on the way home I stopped off at the ranch knowing I could easily find a hog. Shot this sow at about 80 yards, she never knew what hit her.

 
Love my 6x45! I'm running H4895 in mine with good results. Currently running Speer 75 gr HP. It has shot 58 vmax, 65 vmax, 75 sierra HP, 55 gr Dogtowns all very well. Nice work on the pig!
 
Originally Posted By: MPFDMine both loved AA2015 and 70 SMK or NBT. Way under MOA.

I have about 1500 of those SMK's and initial testing with W-748 wasn't great.

I'm hoping trying a different powder gives better results with this AR15. If not, I have a 6mm ARC that I'll try them in.
 
Sierra's accuracy and hunting load both use AA2015. My rifle loved it. It was a BHW barrel.
 
Living in Missouri, 5.56 is legal for hunting deer. I would look at using a 62-70 grain Barnes TSX in some reloads. They work just as well as any 6mm bullet.
 
I do use 5.56, in fact I used it this past season because I had just had shoulder surgery and my 10.5” SBR was the lightest thing I had. I’ve taken several deer with that gun and is effective when using the right bullet and knowing it’s limitations.
 
I love all .223 based 6mm cartridges. I don't have the 6x45, but I have a 6TCU and 6mm Mongoose and love both of them. The 6TCU is in a 16.25" contender barrel and it loves 75g Speer HP's. The Mongoose made by Mad Dog Weapon Systems loves just about anything I shove down it. 80gr Hornady GMX has killed a huge 300+ lb hog and 55gr SBK's are great on coyotes at 3450fps. 87gr Vmaxes at 2750fps. It's amazingly efficient and not far behind the 6mm ARC.
 


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