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Old February 19, 2012, 01:18 AM   #1
hhunter318
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Lazzeroni 9.53 Saturn

I know the Lazzeroni line is proprietary, but can anyone shed light on this cartridge? Info on it is very limited. I was looking for case capacity and a cartridge diagram to no avail. Any info would be greatly appreciated.

My bet is you could probably get the same result from a 378 Weatherby Ackley Improved. But Weatherby brass is also roughly $15-20 more per 20 pieces of brass.

Thanks for any info or opinions.
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Old February 19, 2012, 03:27 AM   #2
SHR970
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From all indications, it appears to be on par with a standard 378 Weatherby; albiet without a belt. They claim the cartridge case is not based on any other cartridge but without dimensions, it appears to be 416 Rigby based.

Since you are questioning the cost of it and the 378 brass, what are you after? A 375 cal. with 2 1/2+ tons of thump? If so, why not look at the 375 RUM. It gives up little in the performance dept.; especially with proper and careful reloading. I have safely got a 300 gr. pill over 2850 fps. with one when using the right powders using published data and have not hit max. loading yet. With my rifle, I see little reason to punish myself any further considering that I've shot 3 holes almost touching at 100 yards with that load out.

Edit: Found dimensions for the Saturn; you'll have to translate from metric to standard. Still looks Rigby to me. Link in Once in site go to Fuego Central / CF on left side bar. In the drop down chose 9 a 10 mm / .39" Scroll down to fond 9.53 x 71 Saturn

Last edited by SHR970; February 19, 2012 at 03:48 AM.
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Old February 19, 2012, 09:37 PM   #3
hhunter318
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Thanks for the link. To answer your question, i'm trying to look at a more long range tube gun setup. Custom built chassis with a Lawton 8000 action. Shooting 330gr. Lehigh Bore Riders due to the .941 claimed BC. Don't want to go up a bolt face size from the Rigby. Don't want to jump up to a Snipe-Tac or anything like that. I want to get the most performance with a .375 caliber round using a .416 Rigby-ish parent case. The 9.53 Saturn sounded promising. But I also thought of maybe taking the .416 Rigby, necking down to .375, shortening the neck to .350, minimizing case taper, and blowing the shoulder forward to 40 degrees.

I know about the pressure issues with the Rigby, but the kinks are still being worked out. I just have to decide on a cartridge. Or decide with what parent case to build off of. As far as cost efficiency goes, .416 Rigby brass is cheapest, but when you start buying custom reamers, custom dies, custom everything, it starts getting expensive also. Not really an issue but would like to go the most cost efficient route to save in the long run.

Also as a side note, if you you can get the 330 Lehighs to 2900fps in the right conditions (which is what i'm trying to reach with this cartridge) , in theory it is still supersonic at just over 2,300 yards! Energy at the muzzle is also 6,175 ft.lbs. That's impressive.

Any more suggestions or help would be greatly appreciated.

Last edited by hhunter318; February 19, 2012 at 09:49 PM. Reason: adding a side note
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Old February 20, 2012, 04:26 AM   #4
Mueller
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Why not take the .338 Lapua and neck up, unlike the .416 Rigby case the Lapua is designed with a higher pressure load in mind, meaning the case head and web are thicker.

One wildcat I have heard about based on this case is the .375 (9.5x70 ELR)



http://www.apsrifles.com/Allen_Xpress_Wildcats.html

Enjoy!

Last edited by Mueller; February 20, 2012 at 04:31 AM. Reason: Found the Link I was looking for
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Old February 20, 2012, 06:04 PM   #5
hhunter318
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I'm just wanting all the case capacity I can get. I can't afford to go shorter than a 2.9 COAL using the long 330gr. BoreRiders. Seating depth with them is going to be interesting. Hopefully it wont be too much of an issue.

Last edited by hhunter318; February 20, 2012 at 06:05 PM. Reason: redundancy
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Old February 20, 2012, 06:28 PM   #6
Mueller
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Depending on magazine OAL you can cut a longer throat in the chamber to allow you to seat longer and free up case capacity.

I have seen this approach with a few other wildcats and if I recall correctly I believe the original specifications for the Weatherby calibers also used a longer than normal throat.
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Old February 20, 2012, 07:37 PM   #7
hhunter318
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I haven't decided if I want it to be a repeater or not. I'm still split on that decision. I could just build my own action. I have the resources(CNC lathe, 5 axis mille, wire edm now), but would rather go with the Lawton 8000.
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