What powder for 7mm Spanish Mauser (Table Data)

[FatJackDurham]

I need to choose a new powder for load my 7mm Mauser Rolling Block No. 5. Here are the loads for my bullet weight from the Hodgdon site. I'd like to know what the opinions are of these powders. The store I goto sometimes has Alliant or Accurate loads, but these were also listed in my Lyman book, so I think I'll stick with this.

What do you think is a good powder here for me to get. I only want to get one right now, to see how the gun shoots. I was going to load up 50 bullets, in sets of 5 with maybe a half grain difference between them between min and max to see how it shoots. I know the store I go to has H4350.

Another thing, the Winchester powder was spherical in the 7mm Mauser ammo I bought before. Are any of these ball powders and if so, do you really need to use a magnum primer? I don't mind, in fact, I use magnum primers with my 45-70 BP loads, so it'd just be one less thing to buy separately if I do.

Any way, chip in, let me know what you think of these powders and what I should get.

Code: Select all

Manufacturer	Powder	Diam.	C.O.L.	Grs.	Vel.		Pressure		Grs.		Vel.		Pressure 		
Hodgdon		H414 		.284" 	3.000" 	42	2406		40100 CUP 	44.5		2532		45400 CUP
Hodgdon		H4350		.284" 	3.000" 	41	2364		38800 CUP 	44  		2513		45500 CUP
Hodgdon		H4831		.284" 	3.000" 	45	2411		41700 CUP 	48  		2542		46000 CUP
IMR 			IMR 4064	.284" 	3.000"    36.3 2345		41000 CUP 	38.6		2448		45300 CUP
IMR 			IMR 4320	.284" 	3.000"    35.4 2286		40500 CUP 	37.7		2401		45000 CUP
IMR 			IMR 4895	.284" 	3.000"    36.9 2381		40600 CUP 	39.3		2487		45600 CUP
Hodgdon		Varget  	.284" 	3.000" 	34	2265		40900 CUP 	36  		2372		45600 CUP

[earlmck]

If your store has it in stock, you won't go wrong with the 4350. That said, the H414 is a ball powder and so will meter very nicely (I would use a magnum primer with the H414).

[EdinCT]

I load the 7mm Mauser with IMR 4350 and 4064 both with good success. I have had higher pressures with the ball powders in my rifle,but they sure do meter nice has stated.
I would try the 4350 first.

[FatJackDurham]

Right. Good enough for me. It's 4350 and some Federal Large Rifle with fries.

[Nath]

I load the 7mm Mauser with IMR 4350 and 4064 both with good success. I have had higher pressures with the ball powders in my rifle,but they sure do meter nice has stated.
I would try the 4350 first.

same here,,,,very forgiving powder

Nath.

[Chuck 100 yd]

I like Varget. It wont win any velocity races with many other powders but it has been super accurate in every caliber I have used it in. I will sacrifice a couple % of speed for accuracy any day.
It`s worth a try.

[FatJackDurham]

Well, I loaded up about 35 rounds or so. I'll hit the range this weekend and post the results.