most effective muzzle brake for .300 winmag or .338 Lapua?

[hak]

hi,

i shoot a 24" .308 now without brake. i'm comfortable with it. i have an opportunity to get a .300 winmag or .338 Lapua stick that will have a .75" x 24 threaded barrel from the get-go.

some form of muzzle brake will be part of this equation from the get go. things i've come across:

option one) http://www.surefire.com/MB338SS03-Muzzle-BrakeAdapter while i wait for the actual supressor paperwork to go through. the brake serves as the can mount, looks very logical. thoughts?

option two) http://www.probed2000.com/main.htm#S.H.M.B. you may have to scroll manually down to "Score High Muzzle Brakes" seems very reasonably priced and note their claimed figures:

Recoil Comparison Chart for Felt Recoil before and after brake Installation

Caliber rifle ® | Felt Recoil with brake.

458 Win Mag ® | 338 Win Mag

375 H&H Mag ® | 30-06 Sprg

338 Rem Ultra Mag ® | 270 Win

338 Win Mag® | 270 Win

300 Rem Ultra Mag ® | 25-06

300 Weatherby Mag ® | 243 Win

300 Win Mag ® | 243 Win

30-06 Sprg ® | 243 Win

7mm Rem Mag ® | 243 Win

270 Win ® | 22-250 Rem

25-06 ® | 223 Rem

22-250 Rem ® | 17 Rem

since a 243 kicks less than a .308 (about 4-5 ft lbs per charts i've seen) that would make the .300 win mag shoot 'less nasty' than my .308. fiction? i assume they're being straight forward, since the published recoil numbers for a given bullet weight in the 'same rifle' would be easy to dispell. does it pass your smell test? are these figures the norm? is this the best you've seen?

do you have any first hand experience comparing other lines/models?

thanks.

 

[gvnwst]

The most effective one i have heard of is the McAurther brake made by the Flint 'n Frizzen shop, but it is REALLY, REALLY BLASTY!
A link to the site:
http://flintandfrizzengunshop.com/Services___Supplies.html

 

[John828]

blasty, meaning everyone at the range who wonders what you are shooting? Yep!

Skip the brake until you get it. Trust me, perceived recoil is different from the tables, iff:

i shoot a 24" .308 now without brake. i'm comfortable with it.

and you go with the .300 or .338 Winnies.

 

[hak]

?

sorry, if that brake table was confusing, but the .338 would be a lapua (like the subject of the thread).

so: "Skip the brake until you get it. Trust me, perceived recoil is different from the tables"

means a brake-less .338 lapua from a 26" barrel... i think i'll need an ice pack, or two, no?

http://www.chuckhawks.com/recoil_table.htm says i'm probably seeing 14 ft. lbs now (heavier .308 rifle than he used there) and if the .338 lapua isn't there, bus using:

338-06 A-Square (250 at 2500)
.338 Win. Mag. (200 at 2950)
.338 Win. Mag. (250 at 2700)

is a hit of 28-33 ft lbs. that's twice...

oh crap:

.338 Ultra Mag (250 at 2860) (in an 8.5# rifle) = 43.1 foot pounds.

i'm too green to know how the UltraMag compares to the .338 LP, other than the printed similarity: "... the Lapua factory load is a 250gr FMJ-BT at 3000fps..."

crimeny. that's nearly 3x