Home Forums Hunting & Shooting Express Rifles and Big Bores Only 375 H&H - Barnes 250 TTSX Info

I've lurked around these forums a bit and finally have a bit of relevant information that some may find useful.

I had searched the interweb in search of some reloading data for the 375 H&H pushing the 250g Barnes TTSX with very little to no information. This weekend I finally got some ammo crammed together and out to the range for some testing.

After getting this gun early this year I was determined to find an accurate load that should cover just about anything from Deer to Elk to Bear.. I figured that the 250 grain Barnes with it's boat-tail design and Ballistic tip with a BC of .424 would make a nice flat shooting round.

I read a few articles about people not having good luck with some of the Barnes bullets and others where they shot great for them. Some of the better advice (as it turns out) was that the Barnes bullets are very sensitive to copper fouling, I had some symptoms of this with some other rounds so I Decided to get some of the Barnes bore cleaner and give the gun a good once over.. Wow.. at a glance the bore looked clean, after running a patch down the barrel it came out nearly cobalt (Blue) .. so following the instructions on the back of the bottle I finally got the barrel Very Very clean.

I loaded up 5 rounds to test the accuracy and check for signs of over-pressure and headed to the range the next morning (along with some 235 grain Barnes)

The Gun was originally sighted in at 200 yards with 270grain loads, so these were expected to hit high, the previous 3 235 grain shots are above this picture, and the 5th 250 grain was fired at the same POI to compare elevation, I then adjusted to fire at the bottom of the bulls-eye and finished the last 4 rounds to get a group

Gun: CZ-550
Scope: Leupold 3x9
Cal: .375 H&H
Bullet: Barnes 250 Grain TTSX
Case: Remington (New Brass)
Powder: RL-15 - 76.5 Grains
Primer: Fed GM215M
OAL: 3.60
Velocity: (unknown at this point) est 2900
Temp: 75
Wind: 2mph (ish)
Range: 100 yards


Pictured above is a 4 shot group (can be covered with a nickle) .. I can get a measurement if anyone really needs it

I have full confidence in these bullets and this gun

I consider this "Done" .. I went home and loaded up 25 more rounds and will continue pushing this out to longer ranges getting ready for Elk Season (drawn this year!) .. I'm confident I can put an elk on the ground if I do my part.

Strong 1st post! Great shooting'!!

Just checked latest Barnes load data.

They now show the 250 gr. TTSX, B.C. of .424, accy load/max 73.7 gr, Varget, compressed, at 2,821 fps.

Their other load/max is 76.7 gr, RL-15, also compressed, at 2,863 fps, 24" Krieger bbl.

My .375 is 21", so maybe around 2,800, plus or minus.

RL-15 has forever been the go to powder, I was surprised to see Varget taking the lead with accuracy.

DF

And only with that bullet.

Yep, my 375 sees RL-15 and the 270 gr TSX exclusively. Varget is doing very well in my 348 Win.

Thanks, Bighorn.

Looks like the 250 TTSX did everything you asked of it.

It has been said, the TTSX with tip and bigger HP opens faster and wider than the TSX with smaller HP and no tip. That may be more of an issue with smaller calibers, not as much with bigger ones.

But, mono'e being mono's, and from your testimony, probably not a lot of terminal performance difference on game.

And, the 250 TTSX has some ballistic advantage over the 270 TSX. The 270 has a head start and a loyal following. It will be interesting to see if the 250 makes any gains on the 270.

DF

Always knew you were a big bore speed freak!