Minimum barrel length for 300 Win Mag with supp?

[JohnMWoo]

What are the thoughts regarding the shortest length barrel for a 300 win mag that will have a suppressor attached?

I don't want to loose too much velocity, and I also have concerns that the suppressor may suffer too much abuse if too much unburnt powder were dumped in it (???).

I've seen the Tac Ops write up that suggested a 22" barrel, but can I go shorter? Has anyone out there done this and have experience with such?

R,

John

 

[Goin'Hot]

Re: Minimum barrel length for 300 Win Mag with supp?

Figure out who's can you want to run and call them. I know AAC will only warranty their product if a certian length is maintained.

 

[Lowlight]

Re: Minimum barrel length for 300 Win Mag with supp?

I want to do a 20" 300WM with a Left Hand twist... just saying LOL

 

[Wheres-Waldo]

Re: Minimum barrel length for 300 Win Mag with supp?

I wonder how much velocity you would loose at 22" and under.

At a certain point your kind of defying the point of owning the 300WM.

 

[Lowlight]

Re: Minimum barrel length for 300 Win Mag with supp?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Wheres-Waldo</div><div class="ubbcode-body">I wonder how much velocity you would loose at 22" and under.

At a certain point your kind of defying the point of owning the 300WM.</div></div>

It depends what your "point" is... I want to shoot 1000 yards like my 308 shoots 600, I think a 20" will do it... anything after that I get is gravy and doesn't matter much because -- in the big picture who cares what happens, that is what artillery and air is for.

People said the same thing about me doing an 18" 260 or even a 308, yet those two are rocking for me, even at sea level. Image what happens when you go up in altitude, then everything evens back out.

 

[jrob300]

Re: Minimum barrel length for 300 Win Mag with supp?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Wheres-Waldo</div><div class="ubbcode-body">I wonder how much velocity you would loose at 22" and under.

At a certain point your kind of defying the point of owning the 300WM. </div></div>

Maybe a better way of saying this would be " the 300WM as we've come to know them".

Things change. A 30 cal. platform with a short overall length, lower weight and quicker handling that still puts 208/210's downrange at 2800 fps+. To some people that's attractive.

If your goal is to buck wind and get the least mils out to 1000 then put a 26 or 28 incher on.

Different goals. Different setups. No "right" answer here.

John

 

[wnroscoe]

Re: Minimum barrel length for 300 Win Mag with supp?

If I were going to shoot Heavy Bullets like the 208/210 and the slower powders like H1000, Retumbo, RL-25, I7828 I'd opt 26". For FGMM, Corbon or any other factory offering 22" would be the shortest I'd go.

 

[Longshot38]

Re: Minimum barrel length for 300 Win Mag with supp?

John how you loading for you win mag? I had mike build me a can for my 300 wby and he wanted to cut the barrel (26 down to 24) but I would of had to change my entire load if had done that. On the other hand I bet it if you cut the barrel down to 22 inches and then started messing with some reloader 17 you probably wouldn't loose to much.

Also you have to remember that Tac Ops rifles are all designed around FGMM ammo. And that is what Mikes MV data is based off of, thus if you handload then things change a bit.

 

[JohnMWoo]

Re: Minimum barrel length for 300 Win Mag with sup

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Longshot38</div><div class="ubbcode-body">John how you loading for you win mag? I had mike build me a can for my 300 wby and he wanted to cut the barrel (26 down to 24) but I would of had to change my entire load if had done that. On the other hand I bet it if you cut the barrel down to 22 inches and then started messing with some reloader 17 you probably wouldn't loose to much.

Also you have to remember that Tac Ops rifles are all designed around FGMM ammo. And that is what Mikes MV data is based off of, thus if you handload then things change a bit. </div></div>

Thanks - I haven't had a chance yet to play with handloading. Being stationed overseas prevents this for now.

So I'll initially only be shooting FGMM.

22"? 21"? 20"? 19"? Probably 18 may be too short?

R,

John

 

[Luvman]

Re: Minimum barrel length for 300 Win Mag with sup

I favor short barrels. I like the way they carry. If I were doing up a 300WM it'd have a 22" barrel max.

My factory tubed .308 is 20" when it gets a good tube it'll be 18.5". I doubt I'll ever get to play at 1K in my neck of the woods so I may go 16" and have an even handier rifle.

 

[ridge]

Re: Minimum barrel length for 300 Win Mag with sup

I lose 101 fps with 208gr amx and 128 fps with 180 SST from a 26" tube to 22" 300 WM. I still use both, but I prefer to hunt with the 22".

 

[BobinNC]

Re: Minimum barrel length for 300 Win Mag with sup

ridge,

Sir, that is a nice rig. Spec's please, and total weight.

Thanks,

Bob

 

[Rob01]

Re: Minimum barrel length for 300 Win Mag with sup

Personally I wouldn't go below 24" but I like to shoot heavier bullets with slower powders.

 

[Arevalosocom]

Re: Minimum barrel length for 300 Win Mag with sup

I had this same question. I found this old thread while "googling" the question.

I found and article from "SWAT" where LEO depts took both 308 and 300 and cut them 1 inch at a time until they found it to become a negative.

For 308 they came out with 18" and for 300 they got 22".

 

[LoneWolfUSMC]

Re: Minimum barrel length for 300 Win Mag with sup

I have a .300WM build planned, but it's a "long range" rifle with little worry about walking in the woods. If I need something handy a 20" .308 is where it's at.

Take a look at what some guys are getting with 208 Amaxes from a 20" .308.

 

[Arevalosocom]

Re: Minimum barrel length for 300 Win Mag with sup

I agree with the short 308, I have mine cut to 18"

I'm more interested in a short 22" 300, but it seems more rare than short 308.

 

[jrob300]

Re: Minimum barrel length for 300 Win Mag with sup

My current barrel is 22". I had it cut when the rifle was my primary hunting rifle. I'm getting 2870 fps out of 208 Amax's. Much faster than I would have expected. I've gotten several cold bore hits on 24" steel at 1500 yds so far and my longest hit on steel is at 1900. The 3500-4000' ASL around here helps a ton with the LR performance.

Having said that, because this rifle has evolved more and more into a dedicated range gun, I think my next barrel will probably go back to 26 or even 28. I'd like to explore the outer limits of this cartridge and I'm probably giving up 100 fps or more and I currently have no plans to put a suppressor on it.


John

 

[Huckleberry75]

Re: Minimum barrel length for 300 Win Mag with supp?

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Wheres-Waldo</div><div class="ubbcode-body">I wonder how much velocity you would loose at 22" and under.

At a certain point your kind of defying the point of owning the 300WM. </div></div>

If you are going to shoot a snub nosed 300wm with a can, get a 308 and do the same thing. It will be easier on the can cost less to feed.

 

[NEW SHOOTER]

Re: Minimum barrel length for 300 Win Mag with supp?

Glad I found this. I was going to ask the same thing then found this with the search. I am getting my funds together for a 300wm. I saw on gun broker that the 5R is offered in 300wm with 24in threaded barrel and I will be shooting suppressed. Seems like the way to go. Already own a 5R in .308 and love it. I am doing the wait game for my suppressor. I purchased a Thunder Beast 30 P1.