Subsonic 7x57 :-)

[miroku6.5]

Yes I agree
Brass for the 7x57 isn’t readily available as other
Brass but it’s for sale by various manufacturers
I use Stella & belliot for my subs ( stain them black )
So I know there the subs
And more hard to come by , RWS for my hunting loads

[sundog]

You’ve inspired me to work up a subsonic/reduced load for my 308 so I bought some Trail boss at the robbing bar steward of a gun dealer in Inverness at the weekend. There’s some good info on the internet but do you have any hints or tips?

[bullbarrel]

Gentlemen,

Can we please call it by its proper name. .275 Rigby

None of this johnny foreign nomenclature on the BBS.

[sundog]

on the estate I worked on we had both. The rifle the toffs would use was a Rigby and every year it would have to be taken to the gun smiths to have one thing or another done to it and even then I never trusted the thing to be on from one day to the next. The estate rifle was a Mauser with a lovely butter knife bolt that got dogs abuse and was never off. Guess which one we always took out for the hinds?

We always called it the 7mm

[Black Beard]

Try it with a heavy, cast bullet. Quieter, more consistent and harder to mess up. It is not like you need 300 yard subsonics.

[miroku6.5]

Hi
The only advice I can give is use a heavy for caliber bullet
But with a short bearing surface to aid stability
Seat bullet in case and mark we’re base of bullet is on the neck
THATS YOUR MAXIMUM LOAD USING TRAIL BOSS
I usually do my load testing over a crony to see when subsonic
THEN AND ONLY THEN I put the mod on when I see holes in target not key holes (unstable)
If they are unstable and your using a mod it will destroy it
Good luck and have loads of FUN 😄
Atb

[miroku6.5]

https://imrpowder.com/wp-content/upl...-loads-r_p.pdf