Thread: 6x45 Rem barrel

Originally Posted by Mathias

Funny how some threads are motivating. Just finished prepping 300 6x45 cases

That to me its prettier than any jewellery.. I just picked up another 100x Lapua cases to open up too.

Contemplated Lapua but had about 1000x R-P brass from my 223, its consistent enough for goat loads where the odd few get lost.

Sent from my SM-A530F using Tapatalk

roughly how fast would a 6x45 with 75-80gn pill be from 18 inch barrel ?,?

Originally Posted by quadhunter260

roughly how fast would a 6x45 with 75-80gn pill be from 18 inch barrel ?,?

An educated guess tells me about 2800 to 2850fps. The 6mm TCU (aka 6x45 Ackley improved)holds 2gr more powder and gets close to 2850fps with a short 14" contender pistol barrel so Id say it doesnt need a long tube to perform with the right powders.

the lack of a lefty 223 bolt action is saving me from more debt it seems so far 😎😂

Back into it, I put together some Speer 80gr soft point projectiles with 26.5gr of H4895 (.5gr off the listed max charge). These are also a harder jacketed hunting bullet so should do well on deer. My apprehension with them was their length and weight, my barrel is only a 1-14" twist so as a rule 70gr projectiles are the heaviest it will stabilize. The 75gr Hollow points stabilize fine and these 80gr soft points are only a little longer and also have the flat base so worth a try.

I put one over the chrono and it clocked 2880fps which is pretty good. This load actually shows less pressure than my 75gr loads with the same load of 26.5gr of H4895 due to its shorter bearing surface so it could probably be pushed a bit faster or at least the same as the Sierra 75gr.
I will put them on paper this morning and test for stability before upping the charge a bit more.

No stability issues at all and a respectable 0.6" 5 shot group at 100m. Good clean round holes with no sign of keyholing. I put another 5 shots out to 220m on a dirt bank and it was spot on. I may have to give the 85gr Sierra game kings a go too.

Nice. The 85gr HPBT should work fine as they are a very similar nose profile and bearing surface to the 75gr HP. I've got a box of the deleted Sierra 80gr Single Shot pistol bullet that were designed for rifle hand gun, these look similar to your Speers there. I must dig them out and have a crack with CFE223 behind them.

lookin promising wingman 😎 following this great thread 😎

Originally Posted by quadhunter260

the lack of a lefty 223 bolt action is saving me from more debt it seems so far ����

@quadhunter260 Im just going to leave this here... nope, no need to thank me, its just how I roll..

https://www.guncity.com/223-remingto...ilencer-364681

https://www.guncity.com/223-browning...-handed-348172

https://www.guncity.com/223-tikka-t3...-handed-360021

Looking good. Thumbs up from another 6x45 convert.

Originally Posted by takbok

Looking good. Thumbs up from another 6x45 convert.

Cheers.. I havent used my .223 in a long time, the .22TCM kinda took its place for varminting but I can really see the 6x45 getting used for goats and deer a lot.
It has remarkable velocity for such a small cartridge and the lack of noise and recoil makes it very pleasant to shoot.

I'm loving these threads of yours showing your projects, I'm envious of your skills and ability to machine up and fit barrels etc. Bloody cool and handy.

I've been interested in the 6x45 for a number of years now. Seems a very capable little cartridge.

I'm starting to like playing with these little cartridges, they are just no fuss at all and fun to shoot all day.

My 223 with 75 gr eldms and my 6.5 Grendel are lots of fun and surprisingly capable.

Your TCM posts were very informative thank you.

My 6x45 has a 20.5" 8 twist barrel and I can get 2500fps from a 105 A-max, 3100 with 70gr blitzing and about 2850 with 80gr Sierra Blitz, although I don't shoot these much.

I hunt roe deer here in Scotland with 62gr GS Custom copper bullets at 3350fps. Very effective.

@takbok I could see how this cartridge would be about perfect for Roe deer and Fellow.
I briefly looked at the barnes mono TTSX but its 80gr and very long so I dont like my chances in my 1-14" twist.
Will test a few of the heavier bullets when I get a moment to chamber and fit up my other 1-10" twist barrel.
I might even go a bit custom on that barrel and use a .223 AI reamer and the 6x45 reamer to cut something close to a 6mm TCU chamber.
The straighter walls and 40 deg shoulder is apparently good for another 150-200fps depending on barrel length.
Im just not sure its worth all the case fire forming drama when this humble old 6x45 case is as easy to make as passing a .223 Rem cartridge through the 6x45 sizing die. It may also introduce feeding issues from a magazine.