I have a customized FN Supreme actioned rifle in 375 H&H. It has the same barrel contour as a Browning Safari. It is currently wearing a Browning factory stock.
Does anyone know of a drop in synthetic stock? I don’t know what will fit.

I dropped a sako 375 (which is an FN ) into a hogue.

Mine is a long extractor, I don’t know if the stocks are the same? Was the Hogue for a small ring Mauser?

I have a Bell and Carlson for my 9.3 (also an FN). Does it fit? yes. Does it fit well? Eh. Has lots of rough edges around the inletting. Ergonomics? Pretty good. Checkering? Good. Probably worth a look . I ordered mine with a specific LOP and no front sling swivel. They accommodated those.

Mauser 98 long action?

Your suopreme is just an opened standard action, not a magnum (416+) sized action.

Looks like this one?

Hogue is a large ring

A mass produced stock may not be drop in for your 375 barrel. And yes, your FN is nothing but a Mauser 98, standard length, of course, large ring. So it is not a matter of the action fitting; it is the barrel contour.
I recommend Boyds laminate for that, and you will have to open up the barrel channel for your 375 barrel. Most after marked stocks are made for a #2 barrel. But fitting for a barrel is very easy.
I don't like the Tupperware stocks.

With just a little bit of barrel channel work my White worth fit into a Bell and Carlson.....I really love that stock!

quote:

Originally posted by richj:
I dropped a sako 375 (which is an FN ) into a hogue.

I have 6 Houge's on Mausers!

I wouldn't take one for free.

quote:

Originally posted by dpcd:
I wouldn't take one for free.

I don't recall asking you?
I know what works for me in Alaskan weather.
If you don't like it Go pound Sand!
(the last VZ-24 I bought from you is a 458WM and sits in a Hogue)