Request for .275 Rigby/7mm Mauser Load Data

[Rare Breed]

Would anyone be so kind as to share load data with which you have had good success with hunting plains game?

I realize that is a broad category of various size animals, but I would appreciate data for various size projectiles you may have used.

I currently have stock of: 139g Hornady SP Interlock; 160g North Fork SS; and 175g Hornady ELD-X, and am open to getting other bullets.

If the load uses H4350 that would be even better as I have quite a bit of it. I also have quite a few Remington 9 1/2 and Winchester WLR, and CCI BR-2 large rifle primers so loads using these primers would be ideal since large rifle primers are difficult to get.

For reference, my rifle had a 22” barrel with a 1:8.66 twist.

The iron sights are regulated for the factory Hornady .275 Rigby bullet, which I have discovered can be reproduced with: Hornady 139g SP Interlock; 47g H4350; CCI 200 large rifle primers; OAL 3.180”; 2,680fps.

However, I have a scope on the rifle, so I would like to develop a load for a heavier bullet that is more suitable for larger PG and then sight in the scope for that projectile.

Thanks ya’ll!

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I took a shortcut my friend even though I am a staunch reloader…I sent my Rigby 275 cases and Partition 175 grain bullets to Hendershots and they reloaded for me targeting 2500 FPS. They shoot clover leaf for me at 100 yards with my Rigby HS in 275 Rigby