IMR 4895 vs H4895

[johnrunner89]

Is there a big difference in the two powders? I am having a very hard time
finding load data for H4895 for .223 cause my books only have IMR 4895 listed for hornady 55gr fmjbt. I did find some load data for H4895 using Speer 55gr fmjbt and am thinking I can possibly use it with my hornady bullets since they are very alike. What do you guys think?

[freonr22]

http://data.hodgdon.com/cartridge_load.asp

[johnrunner89]

http://data.hodgdon.com/cartridge_load.asp

It was the first online source for load data I checked but didn't have any luck. Thanks though.

[huckberry668]

Always treat all differently designated powder as completely different. except for copper bullets, i think it's safe to use the load data for all jacketed FMJBT bullets of the same caliber and weight interchangeably. that's what most reloaders did all these years from the books. but start on the low end and check for pressure signs as you work up the load.

check out their burn rate (rows 87, 89). it's really the only thing to compare powders other than their chemical make-up. H4895 and IMR4895 are close to one another but probably not the same and shouldn't be treated the same.

http://www.hodgdon.com/burn-rate.html

if you check the link given above for 223. You'll see the load data for the same 55gr bullet are different for both powders and pressures are different as well. so it's safe to say they are different.

[johnrunner89]

Always treat all differently designated powder as completely different. except for copper bullets, i think it's safe to use the load data for all jacketed FMJBT bullets of the same caliber and weight interchangeably. that's what most reloaders did all these years from the books. but start on the low end and check for pressure signs as you work up the load.

check out their burn rate (rows 87, 89). it's really the only thing to compare powders other than their chemical make-up. H4895 and IMR4895 are close to one another but probably not the same and shouldn't be treated the same.

http://www.hodgdon.com/burn-rate.html

if you check the link given above for 223. You'll see the load data for the same 55gr bullet are different for both powders and pressures are different as well. so it's safe to say they are different.

Thanks for the info. I'm gunna use the speer data and work my way up.

[TestPilot]

[freonr22]

NICE Quickload!!

[TestPilot]

For comparison, same load using IMR 4895 gives:
96% fill Ratio 23.50grains 2961fps MV Max P:35798 1.238 Barrel Time.

[pisarski]

in the hodgdon book it gives 35.5 gr 3670 vel 49.300 cup hope that helps

[ireload]

in the hodgdon book it gives 35.5 gr 3670 vel 49.300 cup hope that helps

35.5 grains? You mean 25.5 grains.

[pisarski]

sorry looked at the wrong line
26.0gr 3315 vel 49.000 cup looked at the wrong line so forget the other post thanks Ray

[jmabbott888]

In my Ar with a Del ton 16" heavy barrel I have been using 25gr of IMR4895 & H4895 with the same charge under a Remington 55hp or 55sp with pretty good results. I can hit the steel squirrel target at 150yrds 3-4 times out of 5 standing with issue sights. I'm still playing around with a 45hp load for the AR but it isn't quite there yet. Been using 748, Reloader 7 (or 11, can't remember) & 4895. When I get a good load I'll let ya know.

[johnrunner89]

Thanks for the info guys! I did a couple batches of 20 cartridges each. One batch with 23.8grs of H4895 and the other of 24.2. I'll see how they shoot and let you guys know.