7.5x55 Swiss

 
7.5x55 Swiss
 
 

The GP11 was loaded with a 174 grain spitzer bullet and could reach 2640 fps. The diameter of the bullet was increased from the original design, also the length of the case was increased, to 55 mm. The GP11 generates around 45,500 psi of pressure. Older Schmidt-Rubins were converted to fire the GP11, and the round saw service with the 1911 series, the K31 series, and the Stgw 57 series, remaining in service until the mid-1980s. Due to the greater pressures produced by the GP11 round, it is not safe to fire GP11 rounds in Model 1889 Schmidt-Rubins!!! In addition to the standard FMJ GP11 rounds, specialty rounds were produced as well. Armor-piercing Steel-cored rounds can be identified by their violet bases. These rounds can easily pierce .2" of steel plate at 550 yards. Tracer rounds burn out to 880 yards, and can be identified by their red bases. However, most Swiss match shooters use standard GP11 ammunition, a testament to the accuracy of the GP11 round. As a curious side note: according to an article on Cruffler.com. The Swiss GP11 bullet strongly influenced the design of the M1 .30-06 round. By collani@collani.ch 

This text is based on information from “Cartridges of the World”, Hodgdon reloading manual, the cartridge designer and/or own resources.

   
Bullet weight: Bullet name: Powder:  

 
Not yet verified user loads  
ID: Bullet weight: Bullet name: Powder:  
180 grs
Winchester Power Point
H-380
155 grs
155 Hornady Amax
H4895
180 grs
Hornady Spire Point
IMR4895
155 grs
Lapua Scenar
Vihtavuori N150
170 grs
Lapua D46
IMR4895
185 grs
any manufacturer
vitha N 140
168 grs
Hornady
Vihtavuori N-140
178 grs
Hornady A-Max
N140
165 grs
hornday bt sp
imr 4831
178 grs
Hornaday Match BTHP
Reloder 15
150 grs
Hornady FMJBT
IMR 4064
190 grs
Sierra Match King
Reloder 15
178 grs
Hornady Match
Reloder 15
190 grs
Sierra Match King
Reloder 19
190 grs
Sierra Match King
Reloder 15
180 grs
hornady sst
imr 4895
150 grs
Hornady FMJBT
IMR 4064
147 grs
FMJ M-80 Ball
IMR-7383 ( RAD-78L)
168 grs
Sierra MKHP
IMR 4895
168 grs
Sierra MKHP
IMR 4895
168 grs
Sierra MKHP
IMR 4895
174 grs
Sierra Match King .311 dia.
IMR 4064
150 grs
Hornady FMJBT
Reloder 15
155 grs
Sierra Match King
H4831
155 grs
Sierra Match King
IMR 4064
155 grs
Nosler Custom Competition
IMR 4064
150 grs
Hornady FMJ
IMR 4064
168 grs
Nosler Custom Competition
IMR 4064
150 grs
Hornady
IMR 4350
150 grs
hornady interlock
vihtavuori N 160