20” 300 PRC

[yorke-1]

I feel the short barrel on a prc is a mistake. Big cartridges need a long enough barrel to burn the powder. A 24 inch 300 weatherby is no better than a win mag. 300wsm if you want a short barrel. The short fats are more efficient and like faster burning powder.

I'd love to hear your explanation of this. A 24" 300 Weatherby will still outrun a 24" 300 Win Mag by a good margin.

The only thing you give up with a shorter barrel is velocity. Good luck with the project.

 

[David Emerson]

My experience. I had a 300 weatherby with a 25 inch hart. 3150 with a 180. I had a 300 Winchester with a 24. 3180. Different barrels can make a big difference. I had a factory 338 rum. 2850 with a 250 was it. Rebarreled it with a hart and then got 3000. Another 24 inch west german 300 got 31 even. You be the judge. Now I have a 27 inch lilja 300 roy. 3150 with a 200 partition.

 

[David Emerson]

Long narrow cartridges like slow powder and long barrels.

 

[FEENIX]

I'd love to hear your explanation of this. A 24" 300 Weatherby will still outrun a 24" 300 Win Mag by a good margin.

The only thing you give up with a shorter barrel is velocity. Good luck with the project.

Agreed! Depending on brass/source reference, the .300 WBTY has ~10g H2O advantage over .300 WM.

 

[FEENIX]

For what it is worth ...

 

[David Emerson]

I had a customer with a brand new 2506 in a 700. Wanted me to cut it short for a can. I told him I do not recommend less than a 22 on a 2506. Nope I want it cut to 16. OK I learned a long time ago not to argue with the smartest guy in the room. I will not lose anything with the muffler on. OK bud When he came and git it we put it on the crono. 2780 with a 100 gr. Congratulations buddy. Now you have a new shiny quiet 250 savage. Then he was ****ed off at me!!

 

[yorke-1]

My experience. I had a 300 weatherby with a 25 inch hart. 3150 with a 180. I had a 300 Winchester with a 24. 3180. Different barrels can make a big difference. I had a factory 338 rum. 2850 with a 250 was it. Rebarreled it with a hart and then got 3000. Another 24 inch west german 300 got 31 even. You be the judge. Now I have a 27 inch lilja 300 roy. 3150 with a 200 partition.

This is a great example of the causation or correlation argument.

 

[David Emerson]

You are right. No matter your experience somebody always knows better.

 

[lancetkenyon]

I did load workup for a buddy's 23" barreled .300WSM using 215 Bergers. 2775fps, and stupid accurate. Loud AF with a brake though. Makes it PLENTY for elk out to 1000.

 

[sable tireur]

First of all, I am not necessarily a fan of shorter barrels, except for when a suppressor is used.

Second, we are truly blessed with the advent and innovations in new powder formulations which can turn the well accepted world of older information on its ear. Staying up with the new innovation can be daunting especially considering the costs involved. But in order to stay current in our opinions, we have to invest in the advances as they present themselves. In that spirit...

I've been working with 20"-22" barrels for the last few years only find that even with the 20" barrels, a cartridge such as the 300 PRC shooting the 215 Bergers burns all the powder in that short barrel easily. Now the velocities are restrained to say the least but that needs to expected and accepted when short barrels are requested. It is not necessarily a handicap either since there is plenty of velocity and energy available when that bullet reaches 1,000 yards.

Enjoy the process!

 

[David Emerson]

Can I ask what powder?

 

[sable tireur]

Of course, I should have put that in the post.

Re-25

Norma 217

Retumbo

 

[David Emerson]

Can I ask what powder?

I am really curious about this new magic powder

 

[David Emerson]

And how do you test that all this powder is burned in a short barrel?