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Hvor mye tåler et .223 løp?


КГБ

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Hvor langt er et strikk? Grunnen til at jeg spør er at jeg akkurat har lagt bort en C-7. Løpstolken forsvant nesten ned igjennom løpet. Hva er normalt med en vanlig .223?? Noen som har erfaring??

 

 

Ja, en strikk kan jo som kjent variere i lengden :shock::D Etter å ha fulgt flere diskusjoner på sluttstykke angående løpslitasje på kal 223 løp, er det mange forskjellige svar som dukket opp.

 

 

Sendte en e-post til Pentti Louhisola ved SAKO fabrikken i Finland. Her er utdrag fra mailen med svarene jeg fikk. Velger å ta med litt info om tunge kuler i samme slengen, siden dette hører til samme e-post:

 

- "My rifle is an SAKO 75 Varminter Tervonen Kal.223 Rem with 1:8 twist

Barrell."

- Type of bullets i planning to use: Hornady A-max 75gr or 80gr, Sierra mk

77 or 80 gr, and may be Sierra 90 gr bullet, but i belive 90 gr bullet

is too heavy for this barrel with 1:8 twist? Lapua bullets are also in

interest, but they are preliminary to expensive to buy in large numbers.

 

(svaret)

OK. The twist rate of the rifle barrel that you have ,is 8". This will stabilize the bullets weighing over 70 grains. How much over, depends on the shape of the bullet. There is no other way to find out,than try.

To make a suitable load, see for the loading data of the powder manufacturer

Or bullet manufacturer. Do not buy more than one box at first for trials.

 

The barrel life is rather difficult to define. With proper maintenance and

Cleaning, the 223 barrel should go over 10000 rounds before losing accuracy.

In case one does not clean, shoots always the barrel hot and uses high energy double-base powder & maximum charges, even less than 3000 is possible.

 

Best regards

Pentti Louhisola

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