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thoughts from the night before, and the 30 caliber round

 
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Old 10-28-2012, 12:41 PM
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thoughts from the night before, and the 30 caliber round

well I've kinda been wanting a new 30 caliber rifle for quite sometime (as if I needed another one!). Have always had an interest in the 30BR, but also knew it's limitations. Well I was looking at the 25WSM case drawings and got to thinking too much. Take the 25WSM case, and simply neck it upto .308. Kinda be like a 30BR on steroids, and slight bigger than a 30 Meyer (and a hell of a lot easier to make). Anybody here know how many grains of water the 25WSM case holds?
gary
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Old 10-28-2012, 07:58 PM
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Re: thoughts from the night before, and the 30 caliber round

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Originally Posted by Trickymissfit View Post
well I've kinda been wanting a new 30 caliber rifle for quite sometime (as if I needed another one!). Have always had an interest in the 30BR, but also knew it's limitations. Well I was looking at the 25WSM case drawings and got to thinking too much. Take the 25WSM case, and simply neck it upto .308. Kinda be like a 30BR on steroids, and slight bigger than a 30 Meyer (and a hell of a lot easier to make). Anybody here know how many grains of water the 25WSM case holds?
gary
the 25 wssm weighs 213 grains dry and 268 grains to the top of the neck with a fl sized brass with a dead primer shoved back in it.
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Old 10-28-2012, 10:38 PM
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Re: thoughts from the night before, and the 30 caliber round

I have this exact round round setting in my loading room loaded with a bullet, kinda cute looking! Id guess 30-06 performance maybe. maybe I could post a pic for viewing pleasure.
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Old 10-29-2012, 12:12 AM
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Re: thoughts from the night before, and the 30 caliber round

It already exists. Do a google search for 30 OSSM. It was developed by Olympic Arms to run in an AR platform along with the .223, .243, and 25 WSSMs. I believe HSM loads factory ammo for it.
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Old 10-29-2012, 06:32 AM
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Re: thoughts from the night before, and the 30 caliber round

Tricky,

Making a joke? 25 WSM necked up to 30 cal is a 300 WSM. Looks like you caught a few.....
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Old 10-29-2012, 07:19 AM
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Re: thoughts from the night before, and the 30 caliber round

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Originally Posted by AZShooter View Post
Tricky,

Making a joke? 25 WSM necked up to 30 cal is a 300 WSM. Looks like you caught a few.....
Oh, well. Either way it's a smaller 30 cal..
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Old 10-29-2012, 11:45 AM
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Re: thoughts from the night before, and the 30 caliber round

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Originally Posted by AZShooter View Post
Tricky,

Making a joke? 25 WSM necked up to 30 cal is a 300 WSM. Looks like you caught a few.....

The 25WSM case is 1.67" long while the 300WSM case is 2.10" long. Thinking that the 30BR is one of the most efficient rounds out there, but is best with bullets lighter than 135 grains, and best with 120 and lighter grained bullets. So why not create a slightly bigger 30BR that will handle 150 grain bullets without too much of a problem? All the numbers between these two case are similar except for the overall diameter. Just think it would be a great four hundred yard deer round. Using a 150 grain Hornaday SST at 2800 fps, you'd have 1290 ft.lb. of energy on impact at 400 yards. The round would fit nicely in most internal magazines. I calculated the ballistics using the 165 grain SST and it was still 1250 ft.lb. of energy. Wether or not the case could push a 150 grain bullet to 3000 fps is kind of a moote point (it might well do it). All I'm thinking about is a four hundred yard max deer round that is capable of taking a 300lb. animal cleanly, but yet work very well in a short action Mod. 700. I'd rather had a case that was about .10" longer between the shoulder and base, but also know whatkind of a task it is to push the 300 WSM shoulder back that far (not at all fun).

and while on the WSM rambleing this morning, I've also thought about building a better (and leagle) Indiana rifle round. Their case length is 1.80" max (stupid I already know). Why not take the 325WSM or a .338RCM (better round) and make a series of forming dies to push the shoulder back to 1.350 from the base to shoulder. Then cut roughly .315" off the neck. Expand the neck to .358". I think this would be similar to the .358 Winchester and maybe close to a 35 Whelen. I can see 2600fps without all that much of a problem using a 220 grain bullet. Or about 1550 ft.lb. at 300 yards. Heck of a hog round and a good short range deer round.
gary
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