The 6UM

[Holt stewart]

Very nice!

I went to 730 round with the first 6UM, it was toast. As you probably already know 66g and 60 off seem to be the pet load for the DTACs.

I started at 30 off and 66gr and it shot good enough on once fired brass that I didn’t really mess with it after that. I am a little puzzled how I lost 150fps, I’m no doctor but I would imagine it’s got to be tied to the throat growing and it’s more than likely the cause for the accuracy problems I was seeing. After I added a grain and a half of powder bringing them back up to 3120fps they shot ten in 2.1” at three hundred yards.


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[bow_dozer]

Another batch showed up today. Will have the gun put together tomorrow and go get the first rounds down the pipe on Friday.

 

[bow_dozer]

I’ll get some groups in ballistiX later, but did simple load development copying coal from Ryan and Form. Most likely will land on 66.5. 3 shot group I know.. Gun weights 9.6lb with can on. Pumped with how it shoots and feels. I’ll get some photos and specs later.

 

[PathFinder]

First bear for me with the 6UM. 4-5 year old boar, so fairly average sized. Shot was 445 yards with a slight L-R wind. Dialed up 1.2 and held on the bear's shoulder (it was facing left). Impact 3" behind the shoulder, exit just behind mid body as it was quartering away. The base of the jacket is the portion of the bullet that's visible in the picture, that was the only part I found. Upset started immediately, the wound channel was about golf ball sized through the rib cage on the entrance side. The bear only made it maybe 20 yards.
This was a 115 DTAC deep cut. Impact would have been around 2900 fps. I'd say the deep cuts upset plenty fast for use on black bears.
At fairly low magnification I was able to watch everything through the scope even while racking the bolt. Watching impacts and never wondering what happened at the shot is priceless.
2nd pic is the exit, 3rd is the entrance.

 

[Formidilosus]

First bear for me with the 6UM. 4-5 year old boar, so fairly average sized.

Good job on the bear.

This was a 115 DTAC deep cut. Impact would have been around 2900 fps. I'd say the deep cuts upset plenty fast for use on black bears.

At that impact velocity, yes. Above 2,400-2,500fps impact they upset quickly. Below that, they tend to produce a long neck length, and I personally would not suggest them for bear.