February 18, 2011, 07:49 PM
Looking in my reloading books and wanting to work a load with H414 powder. All the books say to just use large rifle primer but my speer book said to use a magnum primer. The loads I`am looking at are for a 22-250 boat tail ballistic tip 55grain bullet. Why would speer be different ? I have been reloading for 2 years and this is the first time I have ran across this. Any ideas?
Thanks Kenny:confused:

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February 18, 2011, 09:30 PM
I'm not familar with that powder or cartridge, but if it is a slow burning powder among the data for that cartridge and bullet listed, then they are showing the magnum primer to make sure the powder charge will completely burn. Slower burning powders can cause an excessive rise in pressure if the charge isn't getting a complete burn. It can have a similar effect to loading a slow burning powder below the minimum listed charge. Some years back I used a standard large rifle primer with a powder that called for a magnum primer, my pressures went quite high and I had a lot of unburned powder and still burning powder blowing back into my face. Always follow the data to the letter and you'll be be OK.

February 19, 2011, 01:28 AM
I don't use magprimers just WLR, and use TAC powder... 40 hornady v-max awesome...

February 19, 2011, 02:14 PM
H-414 is ball powder, and oftentimes, mag primers are recommended for ball powder to insure complete ignition, especially in cold weather.
There are other reasons noted in the Primer chapter in the Speer manual.

I don't know what primer Nosler recommends with their Ballistic-Tips.
But it looks like Speer used mag primers with all the ball powders it lists.

One reason is, CCI/Speer was one of the first company's to make and sell Mag primers after recognizing the need for them when ball powder became available for reloading in the early 1960's.

Another is, the Speer ballistics lab is especially good at noting the little details often overlooked in other manuals.


February 19, 2011, 04:41 PM
H414 is excellent in 22-250 and .243. It's identical to Win 760. I've burned many pounds, mostly in 22-250 for prairie dogs. Standard CCI primers work fine for me. I used mag primers in one 22-250, but that was just because that gun grouped better with the mag primers.
None of my use was in cold weather, so I can't say if that would have made a difference.

Steve in PA
February 20, 2011, 03:57 AM
57.0 grains is what I use in .30/06 with 165gr BTSP bullets. I use regular CCI 200 primers and hunt in some very cold weather. Been using this load for quite some time. Never saw or had reason to use magnum primers.

Hondo 60
February 20, 2011, 09:43 AM
As usual, rcmodel is correct.
Ball powders will work better with magnum primers.
(especially in colder weather)

February 20, 2011, 10:10 AM
I have used H414 in my 6.5x55 and 270 Win, and of course, with magnum primers because it's a ball powder. If I load a ball powder, it gets a magnum primer.


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