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Shooting & Reloading - Mausers, Big Bores and others >> Big Bore Rifles

RobertD
.275 member


Reged: 16/11/03
Posts: 67
Loc: East Bay, CA, USA
Re: 9.3X62 CZ 550 Full stock
      20/04/04 10:17 PM

Mickey,

I have been reading a lot lately about the 9.3 bore and paying attention to the velocities posted by folks for either the 250 or the 286 grain. It seems pretty consistent that folks who chrono their loads average about 50 fps per inch of barrel from 22 inches to 26 inches. One poster actually stated that the 9.3x62 cartridge really liked long barrels.

Now, this is not a scientific study. You could get the same velocity in your 22 incher that others get in their 26 inchers. Who knows what the leade is like in these guns? No one commented about that nor did any of them say they had custom throats on their rifles. If you have one made, I would definitely look into typical leades and throats.

I just happen to notice that over quite a few postings, folks who shoot 9.3x62's seem to average 50 fps per inch of barrel from 22 inches to 26 inches and it seems to be very consistent. And, that is something I find very interesting.

In general, you are right, big bores have large expansion ratios which require medium speed powders, so they tend to work well with shorter barrels without the loss a 7mm STW would have in a 22 inch barrel. I had a 22 inch barrel put on my 458 Win Mag just for that very reason.

RobertD

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Subject Posted by Posted on
* 9.3X62 CZ 550 Full stock 450Dakota 16/04/04 04:43 PM
. * * Re: 9.3X62 CZ 550 Full stock Hauptjäger   06/05/04 02:21 PM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   07/05/04 02:15 AM
. * * Re: 9.3X62 CZ 550 Full stock Hauptjäger   07/05/04 01:24 PM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   07/05/04 02:27 PM
. * * Re: 9.3X62 CZ 550 Full stock Hauptjäger   08/05/04 11:51 AM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   09/05/04 02:53 PM
. * * Re: 9.3X62 CZ 550 Full stock Hauptjäger   12/05/04 11:53 AM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   12/05/04 03:45 PM
. * * Re: 9.3X62 CZ 550 Full stock 475Guy   07/05/04 08:49 AM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   07/05/04 10:23 AM
. * * Re: 9.3X62 CZ 550 Full stock RobertD   18/04/04 01:53 AM
. * * Re: 9.3X62 CZ 550 Full stock mickey   18/04/04 07:50 AM
. * * Re: 9.3X62 CZ 550 Full stock RobertD   20/04/04 10:17 PM
. * * Re: 9.3X62 CZ 550 Full stock atkinson6   21/04/04 01:18 PM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   12/05/04 01:57 AM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   02/05/04 10:25 AM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   02/05/04 04:04 PM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   24/04/04 09:22 AM
. * * Re: 9.3X62 CZ 550 Full stock Gibbs505   18/04/04 02:46 PM
. * * Re: 9.3X62 CZ 550 Full stock 475Guy   18/04/04 02:00 AM
. * * Re: 9.3X62 CZ 550 Full stock Rick_R   16/04/04 10:22 PM
. * * Re: 9.3X62 CZ 550 Full stock atkinson6   17/04/04 04:22 AM
. * * Re: 9.3X62 CZ 550 Full stock 450Dakota   17/04/04 05:35 PM

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