Shot my 375 H&H out here yesterday.
We were shooting at 300 yards. I took the stock and bbl out of the case, put them together, installed the scope [1.5-6], took off the elevation knob, cranked up 3 minutes [from a 200 yard zero], loaded a Federal factory 300 gr Nosler Patition, went prone shooting off a pack and fired the first round.
Hit the 12" plate well centered.
Then I shot a Speer Factory 285 Grand Slam, and a Federal Factory 260 Accubond at the plate. Both rounds hit the plate.

Later that day I shot the rifle at 100 yards with the above loads and some HSM factory with 285 Speer GS bullets, some Federal factory 250 Trophy Bonded Bearclaws and some PMC factory with 300 gr Barnes XLC bullets.
All rounds could be covered with the palm of my hand.

I then shot my 300 Win Mag bbl with similar results, testing different loads.

Then we sighted in my buddies 375 Tracker bbl and his 300 win Mag bbl.

All rifles functioned 100%, and accuracy,
no matter the load, was very good.

The more I shoot and hunt with the Blaser R 93 the more I like it.

Have you ever had any problems with it. For some reason it seems like the action could be jammed if it got dirty due to the straight pull. Has this ever happened to you?

Hello N E 450 No 2,
Interesting for the "come up" of three minutes would be the same amount of elevation called for using a 308 or 223 at the same distance. Point being, that 375 HH shoots a very flat trajectory for a bullet of 300 grains in weight and .378 in diameter! I have use of a 1000 yard range and practice there, lot less post heart attack, and just for the heck of it would shoot the 375 at one of our 600 yard targets and the come ups would be the same for the 308 or some 15 minutes from 100 yard zero.
Recoil and rules prohibit use of the round in matches, but it does deliver excellent accuracy and can reach out there more than some believe. Good shooting, and always glad to hear when someone shoots in "field" conditions and not from a bench or sticks (Yuk!)

bulldog
I have never had any problems.
Even whrn hunting in dusty conditiond and using a ATV to get from camp to near the hunting location.

Driver
You are correct the 375 with pointed bullets shoots just about the same as the 308.
Not too shabby at all for a cartridge invented @ 1912