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Big cases loaded back Vs small cases and top loads
#22912 - 31/12/04 06:56 AM

I am curious as to what others think of the following.

7mm Rem Ultra loaded back Vs 7mm Rem with max loads
270 Weatherby loaded back Vs 270 with max loads
30/378 weatherby or 300 Rem Ultra loaded back Vs 300 Win with max loads
300 Win loaded back Vs 30/06 or 308 with max loads
378 Weatherby loaded back Vs 375 H&H with max loads
6mm/06 loaded back Vs 243 with max loads

and etc.

In recent times both my best shooting mate and myself have moved to the direction of using big cases loaded back to equal max or full loads with the smaller case in the same calibre. Both of us have done enough shooting over a lot of years to know that the standard calibres and the standard magnums such as 7mm Rem, 300 Win, 338 Win and 375 H&H will do the job.....when loaded to the full potential or very close to their full potential.

As I see things the pluses of the big cases loaded back to equal the full pwered ballistics of the smaller cases are:

1) For reasons which completely escape me when calibres are loaded back by 250 to 300 f/s they seem shoot well even when the rfifle has bedding problems and scope and mounts are not what they should be. Can't be recoil because a 460 Wby loaded back to 458 or 458 Lott has heaps of recoil compared to a 7mm Rem with top loads.

2) Accuracy also becomes somewhat easier since the powder choices are greatly increased. A 378 Weatherby would go close to getting 375 H&H ballistics if you used black powder Ditto for 7mm Rem Ultra achieving 7mm Rem or 270 Win ballistics.

3) I think it is now fairly well accepted that low pressure loads in a big case will get better barrel life than full/max loads in the smaller case capacity. In other words a 270 Weatherby loaded back to 3150 f/s with 130 grain bullets will have better barrel life than a 270 Win using top loads to get the 3150.

4) Case life, expecially if neck annealing is used, will be just this side of forever with the big cases loaded back.

5) With the big case loaded back you do have a turbo button on the dashboard and it is nice to know that you can do it. Quite often just knowing you can do something is enough.

6) The big cases loaded back do definitely have the same sort of feel that you get when cruising around easy in a big V8 as compared to putting your foot down in the lower powered car.

Any comments, views, pros/cons etc.

Mike

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vapodog
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Reged: 28/12/04
Posts: 237
Loc: Nebraska USA

Re: Big cases loaded back Vs small cases and top loads [Re: Mike375]
#22942 - 31/12/04 10:30 AM

In reply to:

7mm Rem Ultra loaded back Vs 7mm Rem with max loads
270 Weatherby loaded back Vs 270 with max loads
30/378 weatherby or 300 Rem Ultra loaded back Vs 300 Win with max loads
300 Win loaded back Vs 30/06 or 308 with max loads
378 Weatherby loaded back Vs 375 H&H with max loads
6mm/06 loaded back Vs 243 with max loads

assuming you mean normal (and safe) factory loads as "max" loads in the above, IMO there ain't a pinch of $hit difference in any of them except the .375 H&H Vs the .378 Wby. In that comparison there's a quite a bit of difference at least in energy.

Even here however I'll stick with the .375 H&H

Further I'll take the .270 Win over the Weatherby, the .30-06 over any .30 cal magnum, the 280 Remington over any 7MM mag and yes.....I like the .243 Win over the wildcat.

Reason???...I can get all these guns in featherweight rifles, they're fully the equal of the others mentioned and ammo is almost everywhere.

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Re: Big cases loaded back Vs small cases and top loads [Re: vapodog]
#22959 - 31/12/04 12:57 PM

vapodog

assuming you mean normal (and safe) factory loads as "max" loads in the above

This was aimed at the reloader and not someone who would be using factory ammo. Also, not for the person buying or owning featherweight rifles. A standard Rem stainless or BDL in 300 Ultra is a basically the same gun as one on 300 Win etc.

Mike

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ovis
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Reged: 26/01/03
Posts: 216
Loc: Homer, Alaska

Re: Big cases loaded back Vs small cases and top loads [Re: Mike375]
#22982 - 31/12/04 03:27 PM

Mike,

I think in the distant past, on another forum, we discussed this. I shoot a .375Ultra and I load it down to about .375Wea ballistics.......it's very pleasant to shoot. As far as the .375H&H, and, I'm not knocking it, but, with the larger .375Ultra case, I can shoot any bullet with less pressure and recoil than the H&H, especially when talking the 350gr Woodleigh and probably even the larger Rhinos(haven't tried these yet). I like the versatility of the larger cases. As far as the top loads in smaller cases, I own only one short magnum, .350RemMag, and, for my own use, I find a compressed load to be the most accurate with the accuracy falling off as the loads lighten. Max loads vary from rifle to rifle and I usually stay "within book" but, I feel there is more margin for error with the big cases. I feel that you can match a load to the game you're hunting. Actually, it's a good time reloading for all of them.

Joe

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"Where there's a hobble, there's hope."

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