Is there a 25 UM in the works?

[BAKPAKR]

@Ryan Avery / @Unknown Munitions, is there a 25 UM in the works? Coming from a 30 cal mag background, it is pretty hard for me to go down to the 6 UM as my one and done rifle. But, I think I could see myself shooting a pretty high bc 25 cal 130+ gr bullet at warp speed.

 

[blacktailcentral]

25 saum (necked down 6.5 saum) 30 degree shoulder is available currently. My 21” pbb shoots the 131 sierra right at 3000 fps

 

[Brandon.miller.4]

I have a 25-7 prc with absolutely 0 regrets. For me, a 25 UM wouldnt fill a niche that the 25-7 doesn't already cover.

 

[Ryan Avery]

NOPE! The only people who want a 25UM haven't shot a 6UM.

 

[khuber84]

You'll need more horsepower than a 25um to get a 135gr bullet moving 3100+ mv from a short barrel to make it hang with a 6um, going up 20gr in bullet weight just adds more recoil. Its going to take 82-85+ gr capacity.

I just went down this road, wanted 156 Bergers going 3050+mv from a 22in barrel. I chose a 7lrm parent case necked down to 65 holding 87.5gr water capacity. This would be my choice for a hotrod short barrel 25 as well. Brass options are limited, but adg does makes the new "G" logo gunwerks brass. The old gunwerks 7lrm brass was made by Hornady and was quite trash, been shooting this case since 2011.

 

[hereinaz]

I have a 25-7 prc with absolutely 0 regrets. For me, a 25 UM wouldnt fill a niche that the 25-7 doesn't already cover.

This is an easy button for warp speed.

Also, the 25 Sherman Short Tactical is nearly identical to the 6 UM 30. I shoot my 21” at 3150 fps with a bit more to go if I wanted.

The 6 UM is unique because Rokslide and the small caliber ethos. Like you, most can’t dream of shooting a little caliber bullet, so the wildcats kinda end at 25 cal. I came from 7mm 180 gr at 3050, then 257 133 gr at 3150. The difference in massive wounding was inconsequential, and I was shooting smaller and smaller, discovering it on my own. Had I known what I know now, I would skip right to 6mm.

If you can’t go 6 mm, then a fast 25 is so much more fun and easy to shoot, with all the benefits of a big caliber at 133-135.

 

[khuber84]

SST Holds 3gr less than a saum, it's closer to prc capacity. The straight wall geometry makes it very good at hiding pressure.

 

[BAKPAKR]

I have a 25-7 prc with absolutely 0 regrets. For me, a 25 UM wouldnt fill a niche that the 25-7 doesn't already cover.

The 25-7 PRC hadn’t been on my radar until your post. With headstamped ADG brass available from WTO, that might be the way for me to go.

 

[SloppyJ]

I built a 25 western and it hammers. 18" barrel sends 134s around 3000fps. I could step on it harder and play with powder to get that number up but it likes to be there and I don't enjoy working on new brass that much.

 

[TradLife406]

NOPE! The only people who want a 25UM haven't shot a 6UM.

25 would be overkill
6mm leaves a 5" wound channel in a bull elk at 905 in my limited experience. Not sure why you'd want more.

 

[amassi]

25 would be overkill
6mm leaves a 5" wound channel in a bull elk at 905 in my limited experience. Not sure why you'd want more.

WALLOP!


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[sierracharlie338]

WALLOP!


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Beat me to it

 

[Brandon.miller.4]

For what its worth. The move from a 25-284 to a 25-7 was a marginal but noticeable increase in recoil. My want for a shorter barrel drove me to the decision.

 

[BAKPAKR]

For what it’s worth. The move from a 25-284 to a 25-7 was a marginal but noticeable increase in recoil. My want for a shorter barrel drove me to the decision.

Decent velocity with a shorter barrel is why this sounds interesting.

 

[Brandon.miller.4]

Decent velocity with a shorter barrel is why this sounds interesting.

Thats why im here. 3065 at 18".

 

[hereinaz]

The 25 cal is in that betweener spot that is still a “hunting caliber” and you can get speeds up in short barrel without punishing recoil.

It is for the ones who want a 6 UM/PRC but just can’t buy in completely to the small caliber fest.

 

[BAKPAKR]

It is for the ones who want a 6 UM/PRC but just can’t buy in completely to the small caliber fest.

The main reason I wouldn’t want to go as small as the 6 UM is that I might want to go after something bigger than a giraffe sometime.

 

[Brandon.miller.4]

The main reason I wouldn’t want to go as small as the 6 UM is that I might want to go after something bigger than a giraffe sometime.

You couldn't pay me to go bigger than a 133g 25 or 140g 6.5. Well....everything has a price i guess. But you get the point!

 

[Ryan Avery]

The 25 cal is in that betweener spot that is still a “hunting caliber” and you can get speeds up in short barrel without punishing recoil.

It is for the ones who want a 6 UM/PRC but just can’t buy in completely to the small caliber fest.

If they can't buy in now, they are special! The 6UM40 is a beast.


All joking aside, we did play around with the 25UM, but, as @khuber84 mentioned, there isn't enough horsepower there.

If you want to equal the 6UM in a 25, you need to look at the 7PRC or 6.8 western case. But the recoil is worse than a 6.5SAUM.

 

[hereinaz]

If they can't buy in now, they are special! The 6UM40 is a beast.


All joking aside, we did play around with the 25UM, but, as @khuber84 mentioned, there isn't enough horsepower there.

If you want to equal the 6UM in a 25, you need to look at the 7PRC or 6.8 western case. But the recoil is worse than a 6.5SAUM.

The recoil difference between a 6 PRC and a 25 SST shooting the same velocity is noticeable. All the powder in a 7 PRC case would not be worth the squeeze to me over what the 6 UM does at the price of recoil.

I get to try my first 6UM as soon as the preorder barrels are done. Had a whole mess get ordered so far. I have the brass, powder, and 115 DTACS on standby.