375 test run

[Rburns28]

Finally got to shoot my custom built 375 H&H today. All I can say is wow what a tack driver. Got it sighted in with some 300 gr partitions then went to my loads i'm working up for my cape buffalo hunt. Using H 4350 with a 300 GR Swift A Frame. Need to fine tune it but i'm happy with the results. Started with 75 GR on the top left at 2584 fps. Top right is 76 at GR 2627.5 fps. Bottom left is 77 GR at 2670.8 fps. Bottom right is 78 GR at 2693.7 fps.

 

[Novice Huntress]

Very nice to say the least

 

[PHOENIX PHIL]

Very nice, groups holding well over a fairly wide charge range. I think I'd stick with that 77gr load. The 78gr load showed a bit less increase in velocity than the other 1gr increases. Makes me think it's about to open up a bit after that. And the 77gr load gives you great velocity.

 

[Rburns28]

I'm with you on the 77 gr load I'm gonna load some more and go back to 100 yards and start playing

 

[F. Vaccaro]

Nice groups. I’m an old curmudgeon, I’d go with the 75gr load. You really don’t need more velocity than that, & it would lessen worries about high pressure in the heat.
Good luck.

 

[cajunchefray]

Really Nice!
What brand is the barrel and who did the work?

 

[Surgeon1]

Nice groups. I’m an old curmudgeon, I’d go with the 75gr load. You really don’t need more velocity than that, & it would lessen worries about high pressure in the heat.
Good luck.

I fully agree that 75gr should be your load. A-frames 300's really work best at that velocity and no worries with pressure ever even if 41C in the Delta

 

[Hornedfrogbbq]

Seems kinda fast for buffalo?

 

[PHOENIX PHIL]

H4350 is one of the temp insensitive powders from Hodgson, I wouldn't worry too much about pressure.

 

[Rburns28]

Really Nice!
What brand is the barrel and who did the work?

I think he uses Douglas barrels The guys name is Dexter Lutter this is the 3RD rifle he has built for me

 

[Nevada Mike]

You needn't chase velocity when loading for buffalo. With softs, velocity does not get you better penetration... just more recoil. In fact, Kevin Robertson recommends down loading the 375 H&H to around 2400 fps to ensure that there are no passthroughs when shooting buffalo. He also says slower seems to kill better.

 

[Nhoro]

I know many say that temperature doesn't matter but loads safe and easy in Harare at 34 degrees have a stiff bolt opening in zambezi Valley at 45 degrees C. So I am in the 75 gr camp. I think in terms of penetration, once you are through the vitals, everything else is unnecessary - recoil, bullet failure, over pressure

 

[Scott CWO]

Finally got to shoot my custom built 375 H&H today. All I can say is wow what a tack driver. Got it sighted in with some 300 gr partitions then went to my loads i'm working up for my cape buffalo hunt. Using H 4350 with a 300 GR Swift A Frame. Need to fine tune it but i'm happy with the results. Started with 75 GR on the top left at 2584 fps. Top right is 76 at GR 2627.5 fps. Bottom left is 77 GR at 2670.8 fps. Bottom right is 78 GR at 2693.7 fps.

If you’re interested in another option, you might try StaBall 6.5. I’m using it in my 375 with the 300 grain A-Frame and getting 2641 FPS average and great accuracy.

 

[BeeMaa]

Quite the rifle and amazing accuracy as well. Congratulations.

What is that on the end of the barrel? Possibly a brake? Is it removable?

 

[Rburns28]

Quite the rifle and amazing accuracy as well. Congratulations.

What is that on the end of the barrel? Possibly a brake? Is it removable?

yep its a muzzle break that he designed, and yes it screws off

 

[BeeMaa]

yep its a muzzle break that he designed, and yes it screws off

Does it maintain the same accuracy without the brake? Hopefully you have a matching thread protector as well.