How Temp Sensitive is H335?

tecumseh · Sep 10, 2012

I'm picking up a can of H335 tomorrow to try in my 444 Marlin and wanted to know how temp sensitive it is? Am I going to see a big change in performance between a 90 and 30 degree day as far as velocity and group size?

I'm going to try it with a 265gr Hornady bullet.

DrMike · Sep 10, 2012

Those are not truly extreme temperatures; I would use H335 without hesitation under those conditions. In fact, I do use a fair amount of H335 in my 356.

tecumseh · Sep 11, 2012

Thanks Dr. Mike!

PJGunner · Sep 11, 2012

For years I used H335 in a Remington 660 in .308 Win. Don't recall the load but I never had a problem anywhere from about 105* to 29 or 30*when I lived in Nevada. The only complaint I ever had was a very bright muzzle flash visible at high noon in August and a very viscious muzzle blast. I did use it to work up a max load from my .35 Whelen with 250 gr. bullets and no problem with flash and blast in that cartridge. It should work OK in your .444.
Paul B.

Ridge_Runner · Sep 12, 2012

H-335 is a double based powder so it is more temp sensative than a single base.
RR

velvetant · Sep 12, 2012

I really like H4198 with Hornady 265 in my 444 Marlin

SJB358 · Sep 12, 2012

I have heard from alot of people that H335 is THE powder for the 45-70 and 444 Marlin. Never used it, but it's ballistics seem pretty awesome. Can't wait to load for the 444 Marlin. Mine should be here in a a few weeks or so.

FOTIS · Sep 12, 2012

I have used H335 in the 444 for ever. No issues at all!

Wincheringen · Sep 12, 2012

I've used H335 in the .444 Marlin, but my best results have come with H4198. Especially with the heavier bullets and I've even put three of the 265 grain Hornadys into some pretty tight groups. Stick with the Remington 9 1/2M.

35R · Sep 21, 2012

I've used it from low 40's thru high 90's and no change at all on my .35 Remington. It is my "GO TO" on the M336. And, like it was said earlier, you'll need dark sunglasses while shooting it. :mrgreen: