Any recommendations on what to use for 243 Ackley with 105 Berger now that R23 is gone

Alabama556 · Monday at 2:34 PM

I need some recommendations for a replacement powder for my 243 ackley. Bartlien 1/8 barrel. I was using R23 but loaded my last grain this morning. Using 105 Berger hybrid bullets.

It’s been a while since I did any research on this caliber but I would like to be between 3100-3200 fps without pushing the limits.

Thanks for your help.

Kickin45 · Monday at 5:18 PM

H4350 or Varget

D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷ · Monday at 7:46 PM

jakelly · Monday at 10:51 PM

I’d check out the 6mm Comp Match threads and go from there. I shoot H1000 for barrel life. That Berger book is severely nerfed. 2.710” COAL?

Long Range 338 · Monday at 10:55 PM

RL16 works great in mine

D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷ · Monday at 11:12 PM

jakelly said:
I’d check out the 6mm Comp Match threads and go from there. I shoot H1000 for barrel life. That Berger book is severely nerfed. 2.710” COAL?

I also send h1k but didn’t see it listed.

D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷ · Monday at 11:19 PM

Alabama556 said:
I need some recommendations for a replacement powder for my 243 ackley. Bartlien 1/8 barrel. I was using R23 but loaded my last grain this morning. Using 105 Berger hybrid bullets.

It’s been a while since I did any research on this caliber but I would like to be between 3100-3200 fps without pushing the limits.

Thanks for your help.

This is a rabbit hole but I was able to bring up some technical data. Start here: https://www.6mmbr.com/243Win.html

Read everything. At the bottom are links to guys who put these together in the past I just email my questions. They appreciated someone was ready to learn.

Here’s one from the first page.

243AI6_0

jmw · Tuesday at 10:38 PM

Reloader 26 if you can get it. Was great in my 6-cm with 105 berger

Alabama556 · Wednesday at 5:28 AM

Thank you. I can’t find Reloder anywhere. R23 is a great load in my gun.

Threadcutter308 · Wednesday at 5:45 AM

I shoot the same bullet in 6mm Lapua. The brass is 6.5mm Lapua, necked down to 6mm. Charge is 38 grains of H4350 and velocity is right at 3,000 fps with BR4 primers. Shoots lights out.

jones87 · Wednesday at 7:39 PM

H1000 or magpro works great in my 243 so should work just as good in an AI

JR1200W3 · Wednesday at 10:34 PM

H4831SC

I can't believe someone suggested RL26....

Cascade Hemi · Wednesday at 10:55 PM

H4831SC or RL22

Alabama556 · 2025-02-21T07:37:35-0500

Thanks. I have worn out the load data from 6mm br. I have a printed copy in my bench and it shows the signs of dirty fingers going through the pages.

Seems like I will try some h4831sc. I also have some Imr 4831. I think I have some Retumbo and magnum in my stash

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Any recommendations on what to use for 243 Ackley with 105 Berger now that R23 is gone

Alabama556

Sergeant

Kickin45

Jack of all

D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷

Banned x2 🤪 / Bear Pit Super Mod

jakelly

Sergeant

Long Range 338

Professional Ammo Waster

D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷

Banned x2 🤪 / Bear Pit Super Mod

D̷e̷v̷i̷l̷D̷o̷c̷A̷Z̷

Banned x2 🤪 / Bear Pit Super Mod

jmw

Gunny Sergeant

Alabama556

Sergeant

Threadcutter308

Mr. Sugar Tits to you

jones87

Private

JR1200W3

Supporter

Cascade Hemi

Old Salt

Alabama556

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