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7.5x55 Swiss,
GP-11, 7.5x55 Schmidt-Rubin
The 7.5x55 Swiss (GP-11) was adopted in 1911, giving
the Schmidt-Rubin rifles a .308 bore. The GP-11 round stayed
the primary Swiss round until the end
of Schmidt-Rubin rifle service life.
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Specification
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7.5x55mm Swiss |
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Bullet Diameter |
.308 |
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Neck Diameter |
.334 |
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Shoulder Diameter |
.452 |
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Base Diameter |
.494 |
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Case Length |
2.18 |
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Cartridge Length |
3.05 |
Ballistics -
Very similar to the British .303 and the .308
Winchester.
New Production
Ammo can be found manufactured by Norma .
Reloading Dies
are made by Dillon
Precision, RCBS, Redding, and Lee
Precision , to name a few.
Reloading
components can be found at Huntington's, Midway USA, and
the Wholesale
Hunter, to name a few.
Brass -
I suggest purchasing new Norma
from Midway USA or other
listed above.
Powder - IMR
3031 or IMR 4064 are both good powders for this
round.
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