275 Rigby

[troglodyte]

Gooday
If anyone could advise me in regard to which of the local propellants are best suited for the 7 mm Mauser shooting heavier bullets, in this case 154 gr and later 170 gr.
I have noted that S 335, 355, and S 365 are all listed as suitable, but I see S335 seems to deliver a few feet more velocity safely.

[Tripodmvr]

24"   S335   PMP   PMP   130gr PMP SP   
76.5
Start   41.7   2 635   63.2
Max   44.8   2 884   64.4
152gr PMP SP   
75.0
Start   39.5   2 441   61.8
Max   42.5   2 641   62.1
170gr PMP SP   
75.1
Start   37.8   2 267   60.0
Max   40.6   2 448   60.3
S355   PMP   PMP   130gr PMP SP   
76.5
Start   42.0   2 641   62.9
Max   46.7   2 943   63.0
152gr PMP SP   
75.3
Start   39.2   2 398   61.2
Max   43.5   2 670   61.4
170gr PMP SP   
75.1
Start   37.6   2 277   60.6
Max   41.8   2 517   60.2
S365   PMP   PMP   130gr PMP SP   
76.5
Start   45.1   2 559   56.7
Max   48.5*   2 749   56.7
152gr PMP SP   
76.4
Start   42.8   2 300   53.7
Max   46.0*   2 562   55.7
170gr PMP SP   
76.9
Start   40.9   2 139   52.3
Max   44.0*   2 375   54.0
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Weapon Type

Rifle - Conventional Data
Caliber

7 X 57mm Mauser
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[Tripodmvr]

S355 is the clear winner here but I have not seen any available for many years. S341 is nearly comparable with S355, but case fill will be down. It might be worthwhile experimenting if you have stock.

[janfred]

If anyone has stock of S341 I would gladly fight you for it. Nothing else works better in my .223.

[Ds J]

A longer barrel might allow for a slower powder. How long is your barrel?