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H4198 and 55gr Hornady FMJBT? #15812795 02/19/21
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dla Offline OP
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I have some H4198 left over from reloading 45-70, and I'm looking to make 55gr plinking loads.
I'd like to hear from anyone who has used H4198 in 223.

Last edited by dla; 02/19/21.
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Re: H4198 and 55gr Hornady FMJBT? [Re: dla] #15812825 02/19/21
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Vic_in_Va Offline
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I've used it and the IMR version, mostly with 50 grain varmint bullets.

Gave up a little speed but had damn good accuracy. 22" bolt rifle was getting 3200 fps with 50 grain Nosler.

I shoot the same load in my ARs, OAL is change to mag constraints but a good shooting load, noticeably better than 55 grain fmj but that's probably due to the bullet more than the powder in that comparison.

Re: H4198 and 55gr Hornady FMJBT? [Re: dla] #15812885 02/19/21
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Seafire Offline
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either 4198 will work, running from 15 grains to 22.5 grains in the 223, with 55 gr SP or FMJs...

The lower charges are for a bolt action....20 or more should work with an AR...

Last edited by Seafire; 02/19/21.



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Re: H4198 and 55gr Hornady FMJBT? [Re: dla] #15813962 02/20/21
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Posts: 1,682
dla Offline OP
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Thanks for the input.
On a whim, I tried 21.8gr of H4198, CCI450, LC brass, 55gr Hornady 55gr fmjbt, 2.2" col. But my chronograph had a stroke so no velocity from the 16" 1/8 barrel (unless ERR1 is a secret encoding of the velocity numbers). Seemed a fairly mild load that gassed enough to 3 o'clock my brass.

I know H4198 is less than ideal, but it is what I've got on hand.


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