Ultradyne Apolo S muzzle breaks!

[Mark611]

Has anybody used 308win Ultradyne break on their 6.5 Creedmoor? I know the bore Diameters are different sizes in the breaks, I have measured them, my 6.5 .310 and the 308 is .365 on the ones I have, just wondering whether it makes a real difference on recoil reduction? I'm planning to use them a AR10 platform rifle, the 6.5 break I already have is being use on another rifle and I'm not planning on removing it to test on the 6.5CM upper, anybody with real world use on this?

 

[Mark611]

Well, no responses, alright I did run across some information from a muzzle break manufacture, their conclusions were that you can go up 1 size on a break without much difference or loss so you can use a 308win break on a 6.5mm bore with I'll effects!

 

[ISS]

thanks!

 

[jpjulian]

Ultimate Reloader did a test on oversized brakes a year or so ago I believe.

 

[Bat Rastard]

As I recall, UltimateReloaders test conclusions were that the loss in effectiveness was pretty small.
I am using 30cal brakes on everything. I do not have the possibility of installing one that is too small in the future.

 

[WSnyder]

The Precision Rifle Blog tests are a little older but have good info. There are several write up's in the series. If I recall correctly there's some info on bore diameter in there somewhere. Here's the summary :

Muzzle Brake: Summary of Field Test Results

This post summarizes the eye-opening results for the massive muzzle brake field test I’ve worked on ...

precisionrifleblog.com

The more recent was Ultimate Relaoder:

What happens if you run an oversized brake? – Ultimate Reloader

ultimatereloader.com

 

[ISS]

The test was very eye opening. I had read that optimal was .020" larger than bullet diameter. That left me searching for a .277/.278" model for the 257 Banshee. Rare as a dimocrat who believes in the Constitution as written and legally amended. After looking at the tests and published results, I am comfortable with using one built for the 6.5mm diameter.

Thanks UR,

ISS

 

[Mark611]

That was what I ended up with, I purchased a 6.5 Apolo S for my 6.5 Creedmoor, the reason I asked was I had found some good prices on the 308win Apolo S breaks, but for a few dollars more the 6.5 break was purchased, I watched the UR video before posting but I just wanted your guy's thoughts. Thanks, guys, for the posts and info.