300 prc 199 HH

westcoasthunter

Lil-Rokslider
Joined
Jan 27, 2014
Messages
139
Hey so I just built a 300 prc 24” 1-9t proof. On a Mesa summit TI action . I just ordered some 199 Hammer hunters and was wondering if anyone has any load data . Or velocity to expect? I will be using ADG brass and I have retumbo, h1000,Rl26 and n570 . Open to try any of them what do you guys think would be best
 
Joined
Dec 30, 2014
Messages
8,175
RL26 for max speed, h1000 for temp stability and barrel life. Retumbo might be getting a bit slow and n570 is too slow.
 
Joined
Jan 10, 2021
Messages
12
300 prc was designed for heavies......you may have problems with bullet and jacket separation with that 1:9 twist
 

Plowboy85

Lil-Rokslider
Joined
Jan 6, 2021
Messages
262
I am wrapping up a 30Nosler build myself and looking at the 199s. Have you made any progress on the load development?
 

Plowboy85

Lil-Rokslider
Joined
Jan 6, 2021
Messages
262
Just curious what is the twist on your 30 Nosler
I went with a 24” 9twist Bartlein carbon wrapped. Wanted it to be packable. It has a much longer freebore over SAAMI specs. I got a lot of my guidance from Ryan Furman since he has had several 30Noslers
 

Phil j

Lil-Rokslider
Joined
Jan 18, 2020
Messages
218
Just checking I built a 20 inch 300 PRC and the only thing available from proof was one in 10 twist needless to say the 199 keyhole but it shoots 181s great
 

Phil j

Lil-Rokslider
Joined
Jan 18, 2020
Messages
218
With the 181s I have pushed it to 3100 feet a second but backed it down to 3040 using R26
 

Phil j

Lil-Rokslider
Joined
Jan 18, 2020
Messages
218
I built it to be suppressed the only thing now that worries me is I’ve seen quite a few suppressors on short barrel magnums blowing up
 

JakeSCH

WKR
Joined
Jun 14, 2020
Messages
971
Location
San Diego, CA
Not mine but my buddy is getting 3130 with 77.4 gr of RL26, 215M and ADG brass out of a 26" 1-9 proof barrel. So I suspect you should have a very accurate node well north of 3000 FPS.
 

Knathanb

FNG
Joined
Dec 22, 2020
Messages
4
Hey so I just built a 300 prc 24” 1-9t proof. On a Mesa summit TI action . I just ordered some 199 Hammer hunters and was wondering if anyone has any load data . Or velocity to expect? I will be using ADG brass and I have retumbo, h1000,Rl26 and n570 . Open to try any of them what do you guys think would be best
This week I am doing ladder tests with HH 199 and H1000. Vih560. Bergara Highlander Premier 24" and 1/9 twist. Can share velocity results if you would like.
 

Bockja

FNG
Joined
Apr 29, 2017
Messages
27
This week I am doing ladder tests with HH 199 and H1000. Vih560. Bergara Highlander Premier 24" and 1/9 twist. Can share velocity results if you would like.
What did you get for your ladder test with H1000?
 

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