Muscle it down and fire it. Out comes 7mm-08 A.I. brass.

hammer time

I have both a 25PRC and a new 25 Creedmoor. You can run 134 gr Hornady at 3100 in the PRC and I am running the 134’s at 2940 from the 25 Creedmoor with a 22 inch barrel.
I am fairly certain Hornady will not introduce the PRC in 25 caliber. Too overbore for their tastes.
I am kinda liking the 25 Creedmoor. If they restrict bullet length to same as 6.5 Creedmoor it makes powder choices limiting without compressing powder….those are some loooong bullets.
So far 6.5 StaBall is the winner in speed and shoots good. I want to find a stick powder that gives good velocity but it’s been tougher than I thought it would be without heavy compression. Reloader 17 would be perfect but a little on the temperature sensitive side for me. N555 gets you to high 2800’s,Reloder 26 is too slow , H4831 may end up ok and it’s about right burn rate but havent finished testing it but first try it was slow on speed.

So whatcha think an 18” barrel would hit with 134’s in 25CM

Too slow...slowmoor. Stick to the 6 or 22.

What barrel lengths are your speeds from, DStroud? I ask because I have all the parts to make a 25SAUM and just a barrel short for a 6PRC but been busy shooting/building stuff for other folks lately.

It should essentially be a .250 RCBS Improved (28 degree shoulder?), and maybe not significantly different than .250 Ackley Improved (40 degree shoulder), with a faster barrel twist.

I’m scared she is about to draw some pretty impressive tags and I’m going to be in a bind… think I need to start ordering 6cm components just to be safe. Sucks both are left eyed dominant and I’m right

Both 25 PRC and 25 Creedmoor have 22 inch barrels.

I am building a 20" suppressed 25 Creedmoor next week. 135 gr Bergers is what I will be loading in it.

Higher BC than 6mm and 6.5mm. More bullet wright than 6mm. Higher velocity than 6.5mm. My bet is the porridge is just right.

thanks DS...

I think it is just right for that case. My old reamer I used was the Blackjack reamer, those bullets are all gone now, and so is my old rifle. Im going to build myself a new one soon, I have a new reamer and will use the 133 and 135 Bergers. Im also thinking about a 25-7mm PRC, it would hang with the 257 Wby.

Mine was done with the new Hornady suggested reamer which held it up a while.
I know I can seat 134’s out to 2.850 to give more room for powder if your magazine will allow.

Does this mean that .25 caliber does not suck anymore??

It sucked for long range shooting, now it doesn't.

Heavy, high BC bullets were made. And then barrel makers built barrels to stabilize those bullets.

Really hope they drop the Creedmoor name and give it something new.

No it’s going to be Creedmoor. Boy I bet Hornady would get raked over the coals if they called it something else. I could hear it now “Hornady is trying to market a plain ole Creedmoor with a new name to increase sales it’s just a bunch of hype”
IMO when you have designed and produced the most popular cartridge of the past 50 years or so you just roll with it.

And what exactly is the advantage of this cartridge over existing .25 caliber cartridges such as the 25-06?

Barrel twist rate to stabilize long high BC bullets. Efficient case geometry, making decent velocity, without the added power and recoil of the .25-06

If the 25-06 had a 1-8 twist instead of 1-10 the advantage would go to 25-06 in terms of speed with longer heavier BC bullets, as it has higher case capacity , but might have feeding length issues since CM case is designed for longer bullets.

But biggest thing would be ammo support for larger higher BC bullets.

And in the rifle match shooting world, competitors need to witness their own impact or more importantly their miss, so they can make a correction on a follow-up shot. The 25-06 is going to make that more difficult, than the short action Creedmoor. The 6 Dasha had become one of the cartridges that moved from Bench Rest to PRS style shooting, due to low recoil.

25 Creedmoor in an AR-10 could be an interesting longer range hog catcher, less recoil than 6.5 CM/Rem, 7mm-08, and 308, a little more energy/bigger hole/better penetration than 243. By and large I mainly shoot cartridges that are at least 100 years old but it might be fun to jump on the bandwagon for once.

And fits in a SA platform.

The .25 and .27 caliber cartridges that became popular and so common were pretty much born and popularized in the new era of "high velocity" starting late in the 19th century when the new capabilities of smokeless powder were being realized. Since velocity was the focus, bullet weights were kept low to accent the new feature. As an example, the .250-3000 (aka .250 Savage) was conceived as a 3000 fps cartridge (hence the name) but it was found that using the powders available at the time 3000 fps could not be achieved with 100-grain bullets. By reducing bullet weight to 87 grains, they were able to legitimately claim they had developed a 3000 fps cartridge. Twist rates were adopted based on the need, and since .25-caliber cartridges were going to use existing bullets those low twist rates persisted. The.25-06 basically was hamstrung by things that began to happen long before AO Neidner ever though to neck the .30-06 down to .257 inch.

The very high muzzle velocity was more important with the 3-9X Duplex scopes. 200 yard zero, and you're in deer vitals to 300, maybe 400 yards.

The advancements and availability of rifle scopes, that make the distance not such a daunting task. And the very high muzzle velocity is not nearly as important as it used to be. The most extreme example is the long range .22 lr shooters. The farthest I've hit with a .22 lr is 300 yards. A 7mm-08 at 300 yards is 1.0 Mil. My .22 lr at 300 yards was 13.5 Mils. The scope doesn't care if you need 1.0 or 13.5 to get you on target.

The shooter has to WANT to take advantage of newer scopes in order for that to work. Lot's of shooters that still chase velocity because they don't want to dial and don't want to hold over.

Exactly right.