WSM and 20" barrels?

[ducky]

I'm wondering what kind of performance I can expect from a 20" barrel and a WSM sized case. I've been using a suppressor for the last three years for hunting in .300 BLK, 6mm Creedmoor, and .308 Win. All three have worked well, but I'd like a little more performance.

So ideally I'd like something that pushes heavier bullets faster. My .308 only makes low 2600 fps with 150 grain bullets and an 18" barrel. I'd ideally like to get something like a 180+ grain to 2600-2800 fps. My Omega 300 is rated for magnum rifles with 20" barrels, and when using a suppressor shorter barrels are better for me.

I have the ability to reload, but with the current primer powder issues, I like to be able to have the option to purchase ammunition. So I'd like to stick with cartridges up to .30 caliber that are supported by multiple ammunition manufacturers, no wildcats please. Most of the time shots are likely to be inside 400 yards and use is mainly for elk sized game.

 

[yorke-1]

Take whatever velocity you're getting with your 308 and add 250 fps, that's roughly what you'll get from a 300 WSM with the same length barrel and the same bullet.

 

[Kimber7man]

20" 300WSM, Norma 180 Bondstrike, 2900 fps

 

[7.62 Gunner]

I'm wondering what kind of performance I can expect from a 20" barrel and a WSM sized case. I've been using a suppressor for the last three years for hunting in .300 BLK, 6mm Creedmoor, and .308 Win. All three have worked well, but I'd like a little more performance.

So ideally I'd like something that pushes heavier bullets faster. My .308 only makes low 2600 fps with 150 grain bullets and an 18" barrel. I'd ideally like to get something like a 180+ grain to 2600-2800 fps. My Omega 300 is rated for magnum rifles with 20" barrels, and when using a suppressor shorter barrels are better for me.

I have the ability to reload, but with the current primer powder issues, I like to be able to have the option to purchase ammunition. So I'd like to stick with cartridges up to .30 caliber that are supported by multiple ammunition manufacturers, no wildcats please. Most of the time shots are likely to be inside 400 yards and use is mainly for elk sized game.

I see quite a few guys running 20" 300 wsms are getting around 2850 with 200 grain bergers.
I'd think the 200 eldx Hornady ammo would be a good choice

 

[ducky]

20" 300WSM, Norma 180 Bondstrike, 2900 fps

What's the specs on the rifle build?

 

[ducky]

I see quite a few guys running 20" 300 wsms are getting around 2850 with 200 grain bergers.
I'd think the 200 eldx Hornady ammo would be a good choice

I posted my question, and quickly realized I should have just done a search. I found an old thread answering a lot of my questions.

 

[Wedgy]

21" 300 WSM 181 grain Hammer Hunter at 2,950 fps with H4350

 

[Jonoton]

Any short 7mmWSM experience?
I have one at 27", and while I have pack hunted with it, certainly a bit ungainly.

 

[7.62 Gunner]

Any short 7mmWSM experience?
I have one at 27", and while I have pack hunted with it, certainly a bit ungainly.

I have an 18" 7-300 wsm improved so basically the same as a 7wsm with 81 grains h20 capacity.
I'm getting 2700 fps with 195s, I'll have some data with 180 vlds and 168 berger in a week or so.

 

[lancetkenyon]

Loading a 20" 7SAUM right now with 169HHs over RL23 at 2868fps.

 

[squeeeeze]

Following…

I have a 26" barreled 7WSM and getting 3030fps suppressed with a Berger 180gr. Deduct 30fps per 1" of barrel length and should put it around 2850fps with a 20" bbl.

Been considering getting mine cut down to 22" (just inquired on it yesterday).

 

[cohunt]

20" 300WSM, Norma 180 Bondstrike, 2900 fps

You get 2900 from a 20"? I only get 2950 from my 24" with nbs ammo

 

[MH WASH]

My TIKKA with the barrel shortened to 22"gets 2850 with the 205 Berger.

 

[tahoe1305]

23" 7wsm that shoots 175s well and at 3000fps. This is SAAMI chamber but loaded long to 2.95" in a savage. My buddy has a long throated 20" in a medium action and he will likely surpass me even with the 3" shorter barrel.

I'd go 7mm over 300 if you want even more trajectory performance with a shorter barrel. Should win out in energy too past about 500 or so due to higher BCs per weight.

Guessing at 20" SAAMI you'd be real close to 2900fps with 175 class but pushing .68BCs which is nice.