Muzzle break for .308.

So If I didn't want to add extra length to the barrel, nor width to it, would it be possible to just port the existing barrel. I have a 26" barrel already on the 308. Would the cost-benefit of cutting and threading a barrel to accept a screw-on type break outweight the cost-benefit of just porting the existing barrel?
 
Muzzle brakes..........................we don't need no stinking muzzle brakes...................:p :D


zykopat said:
Oh you manly man... we all know REAL men don't need brakes!;)

Try to put several precision follow up shots on target in a few seconds without a brake... then we'll talk about women and children.
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Been there, Done That...........With a Box Stock Rem700 .308Win PSS with Bipod ........... 5 rounds dead center that could be covered with a Quarter at 300 meters on a 3 second exposure "Huns Head" target relay in the 1996 BCRA Sniper match..........:D

From 2006 BCRA Sniper Match;
Targets003.jpg


10 rounds at 200 meters......... with Bipod ........5 second exposure and had to identify correct target to shoot from two others............
Actual target size is 5.5" high X 3.5" wide. Group at it's widest point is 2" ...............the small group has 6 rounds in it and is less then 1".............;)



Glock-a-maniac said:
Try this, take you 308, load 46.75gr of Varget and pack it down to launch a 175gr SMK. I think my gun weighs more then yours but you'll get the drift. Load 20 or 30 of them and let me know how that goes for ya.

When you're done with that, step up to the 190s and start your load developement of BLC-2 at about 43gr and work up to 46gr in 1/4gr increments with 5 rounds a piece. That should rattle your false teeth loose.
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Have also done that...............I have pushed 178gr AMAX bullets with 46.0 grs of Varget and had no issues with recoil using my current match gun (although I had flattened primers so I backed off the load....).............also tried 180gr and 190gr Matchkings with no issues...............with a stock .308 PSS.............:D ;) :p

Take into consideration my Sniper rig weighs in at 17 lbs.......so recoil is pretty much cancelled out..............no muzzle rise and just a gentle push back into the shoulder...........

Sorry, but I don't see the need for a brake on a .308Win...............;)

SKBY.
 
Longshot said:
Meeeooow.
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You kill me.......

On a side note, with the 175smk sitting on 46.5gr. of Varget how many psi are we talking for chamber pressure?

Here is something to look at if that load is going to be your permanent load incase you missed it.

2.07. Ammunition:
a. All ammunition used in a competition must be supplied by the competitor, must be safe for use in his firearm in all weather conditions and must meet with specific range regulations.
b. A competitor must submit his ammunition for inspection and testing whenever required. CRO/ROs are authorized to check the type of ammunition any competitor is using and, on occasion, magazines will be verified to ensure they hold the correct number of rounds as per Canadian Law.
c. Any unfired rounds will remain in the possession of the competitor, as will his empty cases.
 
Parker-Hale Mike said:
On a side note, with the 175smk sitting on 46.5gr. of Varget how many psi are we talking for chamber pressure?

Here is something to look at if that load is going to be your permanent load incase you missed it.

2.07. Ammunition:
a. All ammunition used in a competition must be supplied by the competitor, must be safe for use in his firearm in all weather conditions and must meet with specific range regulations.
b. A competitor must submit his ammunition for inspection and testing whenever required. CRO/ROs are authorized to check the type of ammunition any competitor is using and, on occasion, magazines will be verified to ensure they hold the correct number of rounds as per Canadian Law.
c. Any unfired rounds will remain in the possession of the competitor, as will his empty cases.
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Are you saying that a 175smk sitting on 46.5gr. of Varget going 2900fps out of a 22" barrel might be over pressure.:rolleyes:

I had the same phenomenon with a 6mm rem I built. Damn thing just kept taking the powder with no pressure signs. I had it up to 3300fps with a 100gr SGK. So I shot it like that and it was great for awhile. BTW anyone want to buy a 6mm barrel. REALLY low round count!!! Oh ya and a bunch of twice fired brass.:D
 
Dave42 said:
Are you saying that a 175smk sitting on 46.5gr. of Varget going 2900fps out of a 22" barrel might be over pressure.:rolleyes:I had the same phenomenon with a 6mm rem I built. Damn thing just kept taking the powder with no pressure signs. I had it up to 3300fps with a 100gr SGK. So I shot it like that and it was great for awhile. BTW anyone want to buy a 6mm barrel. REALLY low round count!!! Oh ya and a bunch of twice fired brass.:D
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Maybe a little..................;)
 
Parker-Hale Mike said:
You kill me.......

On a side note, with the 175smk sitting on 46.5gr. of Varget how many psi are we talking for chamber pressure?

QUOTE]

Well this is an interesting topic (not about muzzle brakes) however, I did get to inspect Glock-O-Maniac's once fired brass while picking up my new toy.

The only signs of any pressure is the primers being a little flat, not cratered etc.

Now, as mentioned, the test would be to see how they do once it warms up a little bit outside.
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A 308 is rated at 2600ish FPS with the 175gr bullet. Going 2900fps can only mean the load is way over SAAMI and milspec pressures. Can it function in a proper action, of course. Is it safe? Depends on how you look at it.

As for pressures signs, actions are so tight that proof loads require one finger to open the action.

Don't go by what the brass looks like to determine chamber pressures.

Jerry
 
Glock-a-maniac said:
LOL If you're going to be anywhere near Summerland BC around the second weekend in April, I'll have the big toys out to play. I can't garanty I'll have the muzzle brakes off but you're more then welcome to try my guns out just for the hell of it. Where are you from anyway?
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Your a good man, Glock-a-maniac! It sounds like a fun time, I'll try and talk Millwright into making the road trip!

He's B.S.ing you guys though, I'm not that big.

We were shooting groups with a .510 Wells last weekend without any trouble, however your challenge does sound intimidating!
 
mysticplayer said:
A 308 is rated at 2600ish FPS with the 175gr bullet. Going 2900fps can only mean the load is way over SAAMI and milspec pressures. Can it function in a proper action, of course. Is it safe? Depends on how you look at it.

As for pressures signs, actions are so tight that proof loads require one finger to open the action.

Don't go by what the brass looks like to determine chamber pressures.

Jerry
Click to expand...

Exactly, I just don't want to see some poor newb think this is a good idea and get hurt by it.

All it takes is a good temp swing or rain/moisture even with Varget and things can go all bad.

At the BCRA Tac match last year we had too many envelope pushers screw themselves over by playing on the edge of catastrophe and then the weather changed.......rain sewered a few people, luckily nobody got hurt.

Anyways sorry for the hijack suprathepeg, back to the thread at hand.
 
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