Thread: 6x45 Rem barrel

Originally Posted by madjon_

@Wingman, fitted,made some dies from 6mm rem(didn't do my inserts any favors)3.5-10

Nice!
You dont mess around do you! Nice job on slotting the mag for the necks too. I run a .300blk mag in mine now which dont have those indents.
Let me know how it shoots mate. My barrel loves the 75gr hps.

Interesting. The 6mm-204 would seem to be the best bet in a "medium" action with a .378 boltface. I think the key is to get something that will run at 30gns powder or a tiny bit under - with reasonable projectiles this produces enough energy to knock over all NZ game, and suppressors very effectively with contemporary suppressors.

Originally Posted by Tentman

Interesting. The 6mm-204 would seem to be the best bet in a "medium" action with a .378 boltface. I think the key is to get something that will run at 30gns powder or a tiny bit under - with reasonable projectiles this produces enough energy to knock over all NZ game, and suppressors very effectively with contemporary suppressors.

I agree, if you have the mag length to handle the OAL length required for the 6mm-204 it would be a great middle weight 6mm pushing 87gr over 3000fps. I think the Howa Mini with the Jefferson bottom metal has a mag OAL of over 60mm, this could be a good contender for this cartridge.
I like my 6x45 for the amount of cheap brass and I don't care if I loose some in the heat of action, the 204 case however, I think I would be on my hands and knees in the long grass

Originally Posted by Tentman

Interesting. The 6mm-204 would seem to be the best bet in a "medium" action with a .378 boltface. I think the key is to get something that will run at 30gns powder or a tiny bit under - with reasonable projectiles this produces enough energy to knock over all NZ game, and suppressors very effectively with contemporary suppressors.

so reading this.....thought came to mind???? the mighty 22-250 is a 6mm ??lee navy??? necked down

so its a case with capacity you asking in barrel diameter you asking.....in length you asking



re invention of wheel comes to mind AGAIN...lol

Originally Posted by Micky Duck

so reading this.....thought came to mind???? the mighty 22-250 is a 6mm ??lee navy??? necked down

so its a case with capacity you asking in barrel diameter you asking.....in length you asking



re invention of wheel comes to mind AGAIN...lol

Haha - after posting that I got a 6mm Crudmore built (which is the same as 6mm/250 Savage AI). I'm currently sitting on a Ruger American action with a interchangeable magazine system and a barrel nut,with the 1x16 thread being fairly common I'm planning doing some playing with the "small" 6mm,6.5 and 270's

Ive been interested in the 6x45 for years now and have been keeping an eye on this thread, you guys have some super neat little rifles chambered for this cartridge and it sure seems great use of the 223 case and is quite efficient. You'd all pretty much convinced me I needed one.......

.......... but i have a lovely little original Model 7 243 win here that has been re-barreled with a Trueflight barrel, finished at 18 inches. It shoots full power 85gr HPBT Sierras super well, so i'll probably just download that using IMR 4198, 28-32 gr with either a 85gr HPBT or an 87gr Vmax and get around 2800 fps and try the kids on that when they are ready to step up. Transfer the short LOP youth stock on it and away they go, then as they grow and can tolerate a bit more recoil i can just step the loads up.

@Dusty Fog hasnt chimed in yet....he has a couple of 6.5-204s and shoots all manner of beasties with them....

Well here it is, my new 6x45. Just got back from collecting him last night.



BSA Regent Featherweight circa ‘56-‘63. Sako .243 1-10” barrel repurposed, custom mini gunworks can. Bolt stroke lengthened, custom 7 shot titanium magazine 2.435” (61.9mm) long.
Leupold 3-9x40
It’s been a long wait to have a 6x45 back in my hands, can’t wait to get out and drop the hammer on something.

now THAT is a work rifle if ever Ive seen one...... bet it could tell some tales/tails......

Originally Posted by Micky Duck

now THAT is a work rifle if ever Ive seen one...... bet it could tell some tales/tails......

It sure can. It has been owned by a very good friend and mentor for a number of years, he took a lot of game with it as a .223 before building his 4th 6x45 on it.

Finally got to do some load development for the new 6x45. Nothing ground breaking, but happy with the results given most of the components were bits and bobs that I had lying around.


85gr Sierra HPBT 25.5gr 2206H

Couldn’t get any more powder in the case, this charge was heavily compressed. I think the sako brass has a low internal volume compared to other makes of brass.

What I was most happy with though, was the new fibreglass stock that I have just finished for it. These old BSA stocks all tend to break through the grip, and as I’d wanted to make a stock for some time, now was the time. Many thanks to @takbok for all the advice! The stock ended up 260gm lighter than the original too, so that was a bonus.

Perfect start point for someone wanting a 6x45....

https://www.trademe.co.nz/a/marketpl...ing/3093946503

https://www.trademe.co.nz/a/marketpl...ing/3086895655

I reckon a Remmy 788 or one of the Howa minis would also be good candidates for improvement.

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Originally Posted by Mathias

I reckon a Remmy 788 or one of the Howa minis would also be good candidates for improvement.

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And speaking of a Rem 788.... the mate that inspired me to build 6x45s built his first on one

https://www.trademe.co.nz/a/marketpl...ing/3090080044

Okay so I'm almost convinced - Would a Remington Model 7 be a good option to convert ??