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Sendero Advice

 
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  #29  
Old 03-09-2013, 01:04 PM
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Re: Sendero Advice

Quote:
Originally Posted by MontanaRifleman View Post
Depending on barrel lengths, throats, powders etc., I would say close to 3000 fps would be expected on the high end for both the 180's in the 7RM and 210-215's in the 300 WM. 3000 fps is a typical max velocity for 160's out of 24" 7 RM and maybe another 50 fps for a 26". With the right combo of barrel and powder 3000 would be possible for 180's but 2800 fps would be more common.

I have shot 210's @ 2935 out of my 24" 300 WSM over RL17.

When comparing apples to apples, a 300 WM is going to shoot a 210-215 bullet about the same velocity that a 7RM is going to shoot a 180.

EDIT: My 300 RUM shoots 210's @ 3130 over Retumbo
I have both a 7mm RM and a 300 WM pushing the very combos discussed here. The 300 WM is a factory chambered 26" 5r. I push the 215s with extreme consistency at 2840 fps.

You won't get 3000 with a 300 WM with 215s in a factory Sendero chamber with any sort of consistency. Truthfully, anything over 2900 fps is pushing the snot out of it. Especially if you are limited to a 26" tube. 2800-2850 is the comfort zone.

The 7mm RM will easily reach 2950 with a factory chambered 26" Sendero with a 180. 3000 might be a touch much, but 2950 is a very realistic expectation.
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  #30  
Old 03-09-2013, 01:47 PM
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Re: Sendero Advice

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Originally Posted by brentc View Post
I have both a 7mm RM and a 300 WM pushing the very combos discussed here. The 300 WM is a factory chambered 26" 5r. I push the 215s with extreme consistency at 2840 fps.

You won't get 3000 with a 300 WM with 215s in a factory Sendero chamber with any sort of consistency. Truthfully, anything over 2900 fps is pushing the snot out of it. Especially if you are limited to a 26" tube. 2800-2850 is the comfort zone.

The 7mm RM will easily reach 2950 with a factory chambered 26" Sendero with a 180. 3000 might be a touch much, but 2950 is a very realistic expectation.
Those are the numbers that I have seen, but as I was saying, that is for factory chamberings. If you get a custom, I am sure you can get closer to the numbers Montana is talking about. I think it would be very difficult to push the 210s or 215s to 3,000fps in a factory 300 win.
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  #31  
Old 03-09-2013, 01:56 PM
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Re: Sendero Advice

The thing I did fail to mention is the capability of the 7mm RM with a 168 vs. the 180. When comparing the velocities capable with a factory chamber, they are darn close to being ballistic twins. The 168 at 3025-3050 and the 180 at 2925- 2950 are nearly identical.
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  #32  
Old 03-10-2013, 12:25 AM
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Re: Sendero Advice

Quote:
Quote:
Originally Posted by brentc View Post
I have both a 7mm RM and a 300 WM pushing the very combos discussed here. The 300 WM is a factory chambered 26" 5r. I push the 215s with extreme consistency at 2840 fps.

You won't get 3000 with a 300 WM with 215s in a factory Sendero chamber with any sort of consistency. Truthfully, anything over 2900 fps is pushing the snot out of it. Especially if you are limited to a 26" tube. 2800-2850 is the comfort zone.

The 7mm RM will easily reach 2950 with a factory chambered 26" Sendero with a 180. 3000 might be a touch much, but 2950 is a very realistic expectation.
I originally said "close to 3000 fps". This member is getting 3035 or so in a 28" Lazzaroni.

Comparing the Berger 210 VLD to the 215 Hybrid

Consistency of load will vary rifle to rifle. Some rifles like max loads and some don't.

As I mentioned, I have shot 210's out of a 24" 300 WSM @ 2935 fps over RL17. I would think it would be possible for a 300 WM to do a little better in a 26" barrel.

A quick search of the internet showed the 7 RM pushing 180's in the range of 2800-3000. Pretty much the same range you will see for the 300 WM pushing 210-215 bullets.
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  #33  
Old 03-10-2013, 12:33 AM
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Re: Sendero Advice

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Quote:
Originally Posted by cohunter14 View Post
Those are the numbers that I have seen, but as I was saying, that is for factory chamberings. If you get a custom, I am sure you can get closer to the numbers Montana is talking about. I think it would be very difficult to push the 210s or 215s to 3,000fps in a factory 300 win.
Sendero's are long throated which will facilitate higher velocities. Yes, it may be quite difficult to see 3000 fps from a 300 WM shooting 210-215 bullets. That would certainly be the upper end. RL22 and RL17 would probably be the best candidates for higher velocities in the WM.

I'll also mention, that I once shot another guy's 300 WM through my chrony once because he wanted to know what velocity he was getting. The load was RL22 pushing 180's @ 3200 fps which is exactly the same velocity my 300 WSM was pushing 180's over RL19.
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  #34  
Old 03-10-2013, 10:46 AM
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Re: Sendero Advice

Quote:
Originally Posted by MontanaRifleman View Post
I originally said "close to 3000 fps". This member is getting 3035 or so in a 28" Lazzaroni.

Comparing the Berger 210 VLD to the 215 Hybrid

Consistency of load will vary rifle to rifle. Some rifles like max loads and some don't.

As I mentioned, I have shot 210's out of a 24" 300 WSM @ 2935 fps over RL17. I would think it would be possible for a 300 WM to do a little better in a 26" barrel.

A quick search of the internet showed the 7 RM pushing 180's in the range of 2800-3000. Pretty much the same range you will see for the 300 WM pushing 210-215 bullets.
Yeah, I know the post very well. However, that is a custom rifle with a custom chamber in a broughton 5c not a Lazzaroni. It's not wise for someone to go out with their factory rifle and expect this type of performance.

I'm just calling it like I've seen it. I too have pushed the 300 WSM hard with RL17 and seen amazing velocities.
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  #35  
Old 03-10-2013, 12:35 PM
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Re: Sendero Advice

The rifle was a Lazzaroni and he did have a custom chamber and throat.

My point is simply, that when comparing apples to apples the 7 RM is going to push 180's about the same velocity range as a 300 WM can push 210-215's. The 7 might have a slight velocity edge but not much.

The advantages of the 300 are longer barrel life and better terminal performance.
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