.375 Whelen IMP. Loads

[waltercrouse]

I have a new project ,I am trying build a .375 Whelen IMP. I have barrel coming and ordered the reamer with head space gauge. The reloading data ,I do not have. Does anyone have the reloading data or where I can find the data? Ackely had the data in his book. But I need the reloading data with latest new powders loads. Speer had 235 grain bullet, at one time. I do not know if they still have it being made.gun)

 

[nchunter182]

I can't be of any help on this load as I don't have one of these. However just to let you know Speer is still producing the 375 cal 235gr bullets. Powder Valley has them in stock. I use these in 375 Winchester and killed a bear in Maine this fall with one of them.
Good luck!
Jay

 

[Lefty7mmstw]

This really isn't much different than using 270 data as a start for 280 loads or the like. Start a bit lower than usual and stay safe in your run-up.
You should be able to pick up a load from a standard 35 whelen with a similar bullet weight, drop back a bit for safety, and work up into a max charge for your 375 whelen ai. Remember the powders these cartridges are capable of using can be dropped back a bit and still be safe; it's not like we can can toss 50bmg type powders in our whelens.
Personally, I'd start with the 235 speer and a win primer with necked up '06 brass... then with rl15 go from low 50's to the high 50's/ low 60's. I'm using 60 rl15 with the 220 speer fp in my 35 whelen (standard).

In any case, the 375 whelen ai should be a fun round to shoot with plenty of knockdown power. I do have a 280 grain 375 cal gs/ fn mould that may do very well too. I shoot the pill with a dose of rl7 under it in my 375h@h for fun once in a while.

 

[TOM H]

I have a new project ,I am trying build a .375 Whelen IMP. I have barrel coming and ordered the reamer with head space gauge. The reloading data ,I do not have. Does anyone have the reloading data or where I can find the data? Ackely had the data in his book. But I need the reloading data with latest new powders loads. Speer had 235 grain bullet, at one time. I do not know if they still have it being made.gun)

There some in Wildcat Cartridge Vol II test done by Mike Thomas for 375 Whelen Improved. Powders he use IMR-4064,IMR-4895,IMR-4320 bullets from 235gr to 300gr. I've got Ackley book and Vol I he has loads for 375 Whelen and only couple for the Improved.

I shoot 35 WhelenAI with Kreiger barrel.

You could start with Ackley data for the 375 Whelen.

375_12_235

I think you could do search on 375 Whelen.

 

[waltercrouse]

There some in Wildcat Cartridge Vol II test done by Mike Thomas for 375 Whelen Improved. Powders he use IMR-4064,IMR-4895,IMR-4320 bullets from 235gr to 300gr. I've got Ackley book and Vol I he has loads for 375 Whelen and only couple for the Improved.

I shoot 35 WhelenAI with Kreiger barrel.

You could start with Ackley data for the 375 Whelen.

375_12_235

I think you could do search on 375 Whelen.

I found reloading data in the Barnes reloading data with 375 Scoville which is 375-06 based case. I also found some info on Kindle ,Hawk reloading manual. It is called 375 hawk/scovill and it is a 375-06 case round.

 

[TOM H]

I found reloading data in the Barnes reloading data with 375 Scoville which is 375-06 based case. I also found some info on Kindle ,Hawk reloading manual. It is called 375 hawk/scovill and it is a 375-06 case round.

Z-Hats been chambering the Hawk line for some time plus that manual. I know they claim 375 H&H velocity for the 375 Hawk and they did that with 358 Hawk, claiming the 358 Hawk is what 35 Whelen should of been.

I did look at that 358 Hawk but decided to go with the Ackley as I wanted 24" barrel vs 26" for the Hawk. Might want to look at what barrel they used for testing those loads.

 

[sodakota]

The 57 grains of H4895 were absolute maximum on my rifle.

375 W AI​	M98​	235​	Speer​	61​	H335​	0.729​	​	iron sights​	54​	1.29"​
375 W AI​	M98​	235​	Speer​	61​	H335​	1.970​	​	M8-4x​	100​	1.88"​
375 W AI​	M98​	235​	Speer​	61​	H335​	1.720​	​	M8-4x​	100​	1.64"​
375 W AI​	M98​	170rn​	CAST​	?​	?​	0.820​	​	iron sights​	54​	0.78"​
375 W AI​	M98​	270​	Horn SP RN​	57​	H4895​	0.660​	​	M8-4x​	100​	0.63"​
375 W AI​	M98​	270​	Horn SP​	57​	H4895​	0.660​	​	M8-4x​	100​	0.63"​