6x45 or 25x45

Drake21

New member
Thinking of building one of these. I'd like a short 16-18" barrel. Looking to hear what guys are getting for velocities from both of these rounds. I'd use 55-70 gr in the 6x45 and 75-85 gr bullets in the 25x45. Nothing heavier.
Thanks
 
You should check out 6x6.8, better velocities, just another one you might consider.

If i was to choice between the two your looking at id go with the 6x45.
 
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Originally Posted By: JOKERThere is a lot of old posts and load info on 6x45
Love mine --
That's my vote and I'm sticking to it --
Thx

Good choiuce on a 223 bolt head. The 6X6.8 is far superior and it it does require a less common bolt but man does it make things lively down range.

Greg
 
6X45 18 inch barrel with a 55 grain bullet will get you 3200 FPS. 70 grain shy of 3000.
With a 6X6.8 you really need 22 inches or your going to be about the same as the 6x45 at 18.
Venatic on here is a wealth of knowledge on these 2 calibers and has helped me out also.
smile.gif
 
Actually my 16" 6x6.8 will shoot a 58 grain Vmax at 3250. I don't think a 20" 6x45 will do any better.
Both are great rounds, and both have a purpose. Cheap brass for the 6x45 and performance for the 6x6.8
 
Good choiuce on a 223 bolt head. The 6X6.8 is far superior and it it does require a less common bolt but man does it make things lively down range.

Greg [/quote]

Definitely wish the 6x6.8 was a .223 bolt head.
 
Make up some dummy rounds of each and see if you have enough room in the mag without having to seat very deep.
 
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I really don't see the point of building something that just shoots a larger caliber bullet from a 223 case. IMO a wildcat has to offer you something, IMO that has to be greater performance. If you want something done in 6mm, options should start with the 6x6,8 even that however isn't enough of a performance step up when loaded to equal pressures over the 223, others will disagree. When it comes to AR wild cats I like something that starts with at least the compacity of the BR case. A guy made a wild cat he called the 25 bobcat which was a shortened 6.5x47 case. That is the best size AR15 wild cat case I have seen yet. I would love to see that standarized with plug and play parts and ammo.
 
Originally Posted By: 3DHUSKER6X45 18 inch barrel with a 55 grain bullet will get you 3200 FPS. 70 grain shy of 3000.
With a 6X6.8 you really need 22 inches or your going to be about the same as the 6x45 at 18.
Venatic on here is a wealth of knowledge on these 2 calibers and has helped me out also.
smile.gif



I just pulled some numbers out of my records on the 6X6.8.

18" 58@ 3391 70@ 3181
20" 58@ 3425 70@ 3272
24" 58@ 3510 75@ 3329 87@3150 95@2960

I never pushed the 24" as I was more intereted in shooting 87-95's in it for 500 yard matches.

In my 24" 6X45 58@ 3351 and 65@ 3221 87@2995

Greg
 
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I guess I should of stated I have a 25 DTI, Dtech 300 wssm is on order, and a 223. The DTI and the WSSM have the performance I need when shooting bigger game. Yet I still NEED another gun! I have a pile of 5.56 brass so I figured either 6x45 or 25x45 would be next.
 
Originally Posted By: cwcbwdtxGood choiuce on a 223 bolt head. The 6X6.8 is far superior and it it does require a less common bolt but man does it make things lively down range.

Greg

Definitely wish the 6x6.8 was a .223 bolt head. [/quote]

You have a lathe? It is doable just like a Grendel/PPC can be done in a 223 bolt face. Not easy but doable.

Greg
 
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Originally Posted By: Drake21I guess I should of stated I have a 25 DTI, Dtech 300 wssm is on order, and a 223. The DTI and the WSSM have the performance I need when shooting bigger game. Yet I still NEED another gun! I have a pile of 5.56 brass so I figured either 6x45 or 25x45 would be next.

I don't have 25X45 yet though I have a barrel on order just so I can be familiar with it. I have four 6X45's and for themoney I don't think any cartidge delivers like it does given the cases being so cheap and the huge selection of bullets that are usable. Based on my use of a 25X6.8 I believe the bullet choices just aren't out there for the 25.

Greg
 
Originally Posted By: GLShooterOriginally Posted By: 3DHUSKER6X45 18 inch barrel with a 55 grain bullet will get you 3200 FPS. 70 grain shy of 3000.
With a 6X6.8 you really need 22 inches or your going to be about the same as the 6x45 at 18.
Venatic on here is a wealth of knowledge on these 2 calibers and has helped me out also.
smile.gif



I just pulled some numbers out of my records on the 6X6.8.

18" 58@ 3391 70@ 3181
20" 58@ 3425 70@ 3272
24" 58@ 3510 75@ 3329 87@3150 95@2960

I never pushed the 24" as I was more intereted in shooting 87-95's in it for 500 yard matches.

In my 24" 6X45 58@ 3351 and 65@ 3221 87@2995

Greg

So wouldn't you agree in this guys situation the 6X45 would be much simpler and less expensive at 18 inches and only loose 200 FPS?

If he wanted a longer barrel say 22 inches or longer the 6X6.8 would be the ticket. IMO
 
I've got an 18" 6x45 from BHW. I hunt with this rifle most between the 16" .223 and the 20" 20pr.
When night calling I can encounter coons or coyotes, but also skunks, badgers, and an occasional possum.
With shots no longer than 175-200 yards at night the 6x45 can knock 'em all down and is handier
than the 20" with the can hanging off the end.

The real question (if you have a suppressor) is:
What about an SBR (say 12.5") in the 6x45?
thumbup.gif


It would make the OAL of the rifle much shorter (handier).
Would the 6x45 round suffer that much in distances less than 200 yards?

I see BHW sells the short barrels in that caliber...

I've been pondering this anyway.
crazy.gif
 
Originally Posted By: 3DHUSKER

So wouldn't you agree in this guys situation the 6X45 would be much simpler and less expensive at 18 inches and only loose 200 FPS?

If he wanted a longer barrel say 22 inches or longer the 6X6.8 would be the ticket. IMO [/quote]

No. Since he already has a 6.8 based rifle it's a toss up. I like versatility. The extra cost would be about 4-5 grains of powder/shot. Dies are the same price.

If we want to look at 200 FPS as negligble why bother? Just shoot a 223 and be done with it.

Greg
 
Originally Posted By: PharmerJonI've got an 18" 6x45 from BHW. I hunt with this rifle most between the 16" .223 and the 20" 20pr.
When night calling I can encounter coons or coyotes, but also skunks, badgers, and an occasional possum.
With shots no longer than 175-200 yards at night the 6x45 can knock 'em all down and is handier
than the 20" with the can hanging off the end.

The real question (if you have a suppressor) is:
What about an SBR (say 12.5") in the 6x45?
thumbup.gif


It would make the OAL of the rifle much shorter (handier).
Would the 6x45 round suffer that much in distances less than 200 yards?

I see BHW sells the short barrels in that caliber...

I've been pondering this anyway.
crazy.gif


Not crazy. I use a 12.5 SBR in 5.56 with suppressor for calling in cover when shots are less than 150 yards. Same length as an 18.5 inch barrel and a [beeep] of a lot quieter.
smile.gif


IMG_20150117_173020068_zpsf9pbw9gv.jpg
 
Originally Posted By: Drake21Thinking of building one of these. I'd like a short 16-18" barrel. Looking to hear what guys are getting for velocities from both of these rounds. I'd use 55-70 gr in the 6x45 and 75-85 gr bullets in the 25x45. Nothing heavier.
Thanks

Drake21. Sorry this got so off topic. Out of the 2 you listed IMO I would go with the 6X45 but any of them will kill coyotes.
smile.gif
 
With the vast amount of data out there the 6X45 is a slam dunk. I don't think I have personally seen one that didn't shoot well.

Greg
 
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