7-300 win mag

[odoylerules]

This is my very first post! I'm relatively new to the long range game. I've been reading and searching post for over a year and have always been able to find answers eventually. The more I search about the 7-300 win mag the more confused I get. I own a Remington 700 chambered in 300 winmag, 24" factory barrel. I love it and it's fun to shoot. I've found a great load that's consistently sub half MOA. It's super heavy though, around 18lbs, which sucks to carry around the mountains. In my first competition I did great out to around 14-1500 yards (my trans-sonic zone), then things got very inconsistent. I'm shooting Berger hybrid 215's at about 2780fps. I want to start a new custom build and have thought hard about making it a 7-300. My goal is a lighter weight hunting rig, but I may occasionally compete with it, so I want to extend my range from the current setup. Specifically it has to be super sonic at a mile. I plan to use a lightweight chassis and proof research barrel, and custom action. I like the thought of a 7-300win for a lot of reasons, like I have brass and dies already.
My question...
Given my "needs", is this the way to go? I plan to run Berger 195's. Is this the caliber that will bang that 1 mile steel every time (given I do my part) and drop an elk as far as I need?
What are your thoughts about this specific wildcat cartridge in general?

 

[Gord0]

I'm surprised you're that low on the muzzle velocity... Most with a 300win mag and a barrel length over 27" are getting 3000+. If you have enough room to seat the bullet out far enough that is.

 

[WeiserBucks]

OP's 300 WM barrel is 24" , same as mine. I can't get much over 2800 before running into pressure.

 

[Joefrazell]

It sounds good as long as it shoots sub 1/2 minute like your 300 win mag. What about stepping up to a 338 for the long stuff? Or shooting tour barrel out and putting a 30" tube on it that will get your speed where it needs to be? How far are you wanting hunt? Two guns sounds like what your need. Lighter rifles are harder to shoot!

 

[odoylerules]

It sounds good as long as it shoots sub 1/2 minute like your 300 win mag. What about stepping up to a 338 for the long stuff? Or shooting tour barrel out and putting a 30" tube on it that will get your speed where it needs to be? How far are you wanting hunt? Two guns sounds like what your need. Lighter rifles are harder to shoot!

I can't imagine shooting at an animal much farther than a 1000 yards. That's a long, long way in the field with real world variables and the fact that animals move unlike targets. The majority of elk and deer are taken like 2-500 yards obviously, but it's a great feeling to know you could do much more if the variables were perfect. I want a round that stays super sonic out to a mile for shooting steel. If I can get it around 10-12 lbs finished weight like I want I'm sure it'll kick hard, but who cares if it's primarily a hunting rig. No one feels recoil when shooting at animals right. My current 300 win mag will max out on game at about 950 yards. That's when it slows to about 1800fps and full bullet expansion can't be counted on. I don't know what a 7-300 will do to extend my current effective range. I'm thinking with the 195's running around 2900-3000fps it should be close to what I want. That's one of the main questions I had about it.

 

[WeiserBucks]

A 28 Nosler or 7 RUM will drive the 195's at and above 3100 . May want to consider those also if you're serious about 1 mile targets and don't want a 338 .

 

[odoylerules]

Could anyone help with a reamer for the 195 Bergers. I want to set the boat tail at the neck/shoulder junction

 

[4xforfun]

"I own a Remington 700 chambered in 300 winmag, 24" factory barrel. I love it and it's fun to shoot. I've found a great load that's consistently sub half MOA. It's super heavy though, around 18lbs, which sucks to carry around the mountains. "

How is this possible.....18 pounds with a factory 24 inch BBL? Do you have a Farley Coaxial front rest bolted on the front of it?

 

[Georgiashooter]

"I own a Remington 700 chambered in 300 winmag, 24" factory barrel. I love it and it's fun to shoot. I've found a great load that's consistently sub half MOA. It's super heavy though, around 18lbs, which sucks to carry around the mountains. "

How is this possible.....18 pounds with a factory 24 inch BBL? Do you have a Farley Coaxial front rest bolted on the front of it?

I was curious as well!! I would go 28 nosler with this bullet. I just finished one that slings them at 3200 fps and holds sub 1/2 moa out to 800 so far

 

[dfanonymous]

Th It's super heavy though, around 18lbs, which sucks to carry around the mountains. In my first competition I did great out to around 14-1500 yards (my trans-sonic zone), then things got very inconsistent.
Given my "needs", is this the way to go? I plan to run Berger 195's. Is this the caliber that will bang that 1 mile steel every time (given I do my part) and drop an elk as far as I need?
What are your thoughts about this specific wildcat cartridge in general?

Sounds like the old gun started to get a case of throat erosion.
as far as light weight goes, is not always the best for long range shooting. harmonic sensitivity, barrel whip, i mean depending what the light parts of your rifle are will have some consequence. I have a 308 in a precision hunter chassis under a remington tac, and that is might light weight hunting gun for close to medium. long range hunting, it is more heavy, and that is a remmy LA (300wm) in a xlr evolution chassis, folding stock, and Schneider m40 barrel (26in). It sucks to carry on top of all the other gear, but things worth doing dont come easy.

 

[odoylerules]

"I own a Remington 700 chambered in 300 winmag, 24" factory barrel. I love it and it's fun to shoot. I've found a great load that's consistently sub half MOA. It's super heavy though, around 18lbs, which sucks to carry around the mountains. "

How is this possible.....18 pounds with a factory 24 inch BBL? Do you have a Farley Coaxial front rest bolted on the front of it?

17.2lbs, you got me. I exaggerated a little