Cold weather coyote 222 load

[Cleftwynd]

Hey fellas, I am looking for some insight with cold (-30c) load development for a 52 grain Sierra predator load in 222.

Here is my current list of powder in stock that might work.

H4198
Varget
BL-C(2)
H335
Benchmark
IMR 4895

I am hoping to exceed 3100 FPS, and not worry about it warming up and causing pressure or velocity issues.


Where would you start?


EDIT: also have Superformance if that is of any use....

 

[todbartell]

H4198. It's also temperature stable. H335 would work well too but I'd try H4198 first

 

[222Rem]

If it was me I would use magnum primes Use with caution !!!

 

[B-78]

Do not even bother with BL-C(2). I found out a few years ago that POI will move drastically as the temperature drops. Of the powders you listed H4895 is my favorite but now a days I stick to XBR 8208 for 90% of my varmint rounds.

 

[ackertjosh]

I was successful getting 3150fps outta my Rem 700 with a 24" barrel using H322 and Benchmark with CCI BR4 primers. Accuracy was good in both as well with H322 taking the nod on accuracy.
Cant remember the powder charges and im away from my reloading books as im in the middle of moving.

Have fun and play safe
Josh

 

[Grey_Wolf]

Do not even bother with BL-C(2). I found out a few years ago that POI will move drastically as the temperature drops. Of the powders you listed H4895 is my favorite but now a days I stick to XBR 8208 for 90% of my varmint rounds.

8208 XBR is my go to powder for varmints as well. Excellant results in the 222 and in my 20 cal. H4198 works in my short barrel 20 and I have had really good results with RamShot X-Terminator (Accurate 2230 is the same powder with different label). Not really what the OP wanted to hear and I understand wanting to use what is on hand but the 8208 and X-Terminator are what I have had work best.

 

[Cleftwynd]

H4198 it is! To start anyway lol. Thanks fellas!

 

[sharp shooter]

How is IMR 4198 in regards to temperatures?

 

[r204]

H4198 , Benchmark, H322 and IMR 8208XBR are all good powders for the 222 and they are all temp stable

 

[Cleftwynd]

Instead of starting a new thread thought I would ask here.

Has anyone else been getting much higher velocities than book values when working up loads to where pressure signs show up? Would that be because it is reaching 223 pressures instead of the lower rated 222 max pressures?

 

[brobones]

WW 748 is my go to for the 222. Exceptional accuracy and velocity.

 

[Longwalker]

I have not tried many other powders, but H4198 works well for me in the .222 and extreme cold too.

 

[todbartell]

Has anyone else been getting much higher velocities than book values when working up loads to where pressure signs show up? Would that be because it is reaching 223 pressures instead of the lower rated 222 max pressures?

222 SAAMI pressure is 53,664PSI, 223 is 55,000...hardly much difference

 

[Grey_Wolf]

Instead of starting a new thread thought I would ask here.

Has anyone else been getting much higher velocities than book values when working up loads to where pressure signs show up? Would that be because it is reaching 223 pressures instead of the lower rated 222 max pressures?

Someone else answered about the difference in pressure I see. Really not that much. Remember in the books it is with a specified barrel of X length and whatever other variables are listed. A shorter barrel on your gun will be a little slower velocity than the test barrel. A lot of things come in to play - you should be in that range but a little high or a little low isn't something to get worked up over. Start at the low end and work up watching for signs of pressure. You might not see it even at max listed load. I don't get hooked up on velocity I look for the most accurate load wherever it falls

 

[Cleftwynd]

I know the throat is a little long for 50 grain bullets when seated to fit the mag in this 24" barrel BRNO. But almost every load I try I can consistently get 100-150 FPS more than listed loads with no pressure signs at all, and no brass expansion near the web at all. I stopped there but was wondering if I should try a little more while watching for signs of excess pressure. Every other rifle I had would show something indicating higher pressures when at or near at least one sources Max loads. This thing hasn't shown me squat but my velocities are always over listed speeds.

 

[Longwalker]

Velocity equals pressure. I don't believe that there is any "free" velocity without accompanying high pressure. So if your load is accurate, Quit. Don't push your charges much over book velocities with modern cartridges like the .222, there is nothing to gain, and lots to lose.