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It (280ai) is probably my favourite cartridge of the many I own...but I have to whisper it so the others don't hear ;)

I read this and found it to answer a lot of the questions. Hope it helps. https://www.outdoorlife.com/guns/federal-7mm-backcountry-review/

Assuming that brass does become an obsolete case material, the sale of muzzle brakes will go through the roof. More velocity means more recoil…or all of a sudden the 260rem starts performing like a 6.5PRC and how we think about cartridges changes too. I suspect the race for the fastest and...

It will take a lot to dethrone the media around the 7mmPRC. 7mm cartridges are pretty common now with just about every scenario covered. Hard to see it taking off and sticking.

If you can’t get it done with a 125grain partition or 130 accubond, you need something bigger than a 6.5 imho. Not too many things go far with a well placed bullet of either of those above at sensible distances.

100% on that.

Two packets of Norma 300 Rum cases, 1 Packet of Norma 7mm08 brass with matching sierra 140 tipped gamekings, mtm boxes for all, some game fishing lures and a heavy tackle harness. Santa was good to me this year 😀 Almost forgot, a rear bag rest for hunting to throw in my backpack.

I had to read that twice to make sure I got it right the first time. My brain kept screaming “wtf”.

Just make sure your barrel is well scrubbed before you start. They definitely like a clean barrel to shoot accurately, more so than your standard cup and core bullets which seem to have greater tolerance through being softer.

H4350 turned around my lousy relationship with the 300wm to being one of my favourites. Admittedly this was with the 180nbt and accubond. I tried H1000 and 4813sc for okay groups, but just wasn’t doing it for me. H4350 was like I finally unlocked the rifles secret.

I will second the advice on the 260rem and the 120nbt, a fantastic bullet. Generally speaking, varget for 100 grain bullets, H4350 for 120’s and h4831sc for the heavier 140’s and beyond. Welcome to the forum and I look forward to hearing how this cool little cartridge works out for you.

I have played with the 338wm for quite a while and remember being a little confused when I first started as Alliant’s load data seemed very high to everyone else for 225 grain bullets. I will again find myself in load experimentation soon as I will run out of RL19 which has been my go to. I...

It is Christmas Eve here in Australia. I would just like to wish you all a Merry Christmas, a safe and prosperous new year and to thank you for your help and insights when I have needed it . May Santa be kind to you and Mrs Claus be both generous and understanding. Have a great one all.

All barrels aren’t created equal and depending on the cartridge, some gain more from extra length. I know from my own experience, sometimes playing with a cartridge using similar weight projectiles and different powders creates a better understanding of how things work. Some really good advice...

Limited by magazine length. I actually converted a Mauser 98 when I was 19 to 7mmRM, that was over 30 years ago. It may well be that the barrel has finally reached its end of life too, but it still shoots moa with 150nbt’s, so still a very handy rifle.

Merry Christmas to you as well. We are hard pressed to get imr powders here in Australia. Have also tried H1000 without a great deal of success. Thinking I may end up back at 160nbt’s and accubonds…and totally happy with that too.

Dr Mike, thank you. That was exactly what I needed thank you. Merry Christmas to you and your family.

Hi Guys, I have been working up some loads in my son’s 7mmRM using the 162eldx. We found it pretty temperamental to be honest. There was one accuracy node that we will work on. His barrel length is 26 inches, powder is H4813sc using 64.5 grains and 65 grains. 65.5 appeared to be developing...

You almost need a goal seek function in the app.

What would they be, 3,500-3,600fps range. I bet that was massively confidence inspiring.