Home Forums Hunting & Shooting Ask The Gunwriters Ask John Barsness Questions About "Affordable Handloading."

I am obviously not John, but I would try either Ramshot Big Game or Reloader 15. Some folks claim 760/414 is the way to go, but it did not give good accuracy for me.

I'm not JB either but, I went to IMR 4451. I don't see velocity loss when it's really cold, which I saw with IMR 4064. I never had a problem with high temps. In my experience the "copper eraser" really works.
The Enduron IMR 4166 is just a hair faster than 4064 and seems accurate in my 308.
Scuttlebutt is that Enduron powders are made by General Dynamics in the US rather than ADI Australia. I dont' really know.
If they made an Enduron at IMR 4895 speed, It would become my "everything" powder.

The Endurons are made by General Dynamics, but in the Quebec plant in Canada.

I doubt they'll produce an Enduron of the same burn-rate as IMR4895, since 4166 is so close. But then I didn't see any real place for an Enduron between 4451 and 7977!

You could give Alliant's new AR-Comp powder a try. A rep for Alliant on another site claims AR-Comp is temperature stable, contains a decoppering agent, and falls very close to the IMR 4895 burn rate.

No personal experience with it myself, but I like the trend of newer, temperature resistant powders with decoppering agents added...

Is H322 a good substitute for AA2015BR? I used 53.5gr/2015BR/250X in my 22" 35 Whelen AI for 2600. I've never tried anything else with his particular bullet, but this was way back in '95! I read up that, for all practical purposes, the newer 2015 is pretty much the same thing. I use H322 with my most used load, 58gr/200x & TTSX and have a good stock. Can I use it if I start out around 50gr/250 and work up slowly? I get great results with Nosler & Speer 250s, but with 61gr R15, which "supposedly" I right @ 64+K . I think I'd like to replicate my older load for my current use. Any suggestions? Thanks.

Hodgdon lists 54.0 grains of H322 as maximum with the Speer 220-grain in the .35 Whelen, and 52.0 with the 250 Hornady Spire Point. There isn't all that much difference in capacity in the .35 Whelen AI, but there's enough that you could safely start at those maximums and see what velocity results.

Thank you sir! I gave some thought to this Whelen AI. I had some friends do the Quick Load pressure prediction with all my data. Turns out I was wrong and you were right about higher velocity in that it only comes by higher pressure. My loads for the past 21 yrs have been the 53.5/2015 250X2600 (70K) R15/55 310 @2424 (almost 71K) I only used H322 58gr/200X but at 2970fps (no workup for pressure, but I got to be high) an R15/61gr with 250 NP&Seer @2750 (aso oe 70K) Bummer. My primer pockets stayed tight, bolt lift is easy and primers looked fine. IOWs...that Ackley had me fooled, ha. So...I'm having this Mod 700 converted to 358 Norma. I love the velocities and those bullets on game...but not gambling any more. So I apologize for taking exception to your article on the Improved cartridges, ha

Have any of you guys used or seen used the 358 Norma mag on game? I decided to have my rifle converted to magnum (open bolt face/M16 extractor/magnum magazine follower) and rebarreled instead of rechambered. I'm going with a #4 Shilen at 24", comes with a 1 in 14" twist. I will be focusing mainly on 200 to 225 TSX/TTSX at first. No big bears for me, but I sure like thumping elk hard! ha