300 PRC update

[Schw15]

Any good starting point n565 and n568 with berger 245 lrht single feeding.........

I thought he only wanted to mag feed so this will give me more options.

What speeds could I expect with 245 lrht single feeding out of a 28 to 30 inch barrel......

Then if he has to mag feed I will have a berger 220 load

I'm also not against trying n570 as an option for more performance this will be his elr rig only

 

[375fan]

Velocity?

2925
BTW, I tried N568, it is way too slow burning for the 230.

 

[GunnyUSMC]

Two loads I have used in my 300PRC with a Defiance action, 30" Bartlien HV, 1-9 twist

Load 1- Berger 245gr, N565 78.2gr, COAL 3.8, MV 2920
Load 2 - Berger 230, N565 77.4, COAL 3.65, MV 2954

 

[Rocketmandb]

.335 bushing
.306 mandrel
.340 OD after seating

 

[max1840]

My dad has decided to get a 300 prc barrel. With lapua brass what bushing are you guys running for 3 thousand neck tension? Or what's your loaded rounds measure? Most likely going to order the SAC 300 prc dies with the shoulder bushings

The plan is 28 to 30 inch barrel which ever he can find the fastest. Most likely shoot 230 a-tips with n565 maybe n568 depending on everything.

Any info is helpful with those combos

26" Bartlein 1:8.5
230 A-Tip, 74.8 RL26 (sorry, that's all I tried with A-Tips), CCI 250, .336 bushing, CBTO 2.803, Hornady brass, 2850 fps
230 Berger LRHT, 75.4 RL26, .336 bushing, Hornady brass, CCI250, CBTO 2.917, 2890 fps
225 ELDM, 78.5 H1000, .336 bushing, Hornady brass, CCI250, CBTO 2.920, 2900 fps

 

[Schw15]

Does anyone run the short action custom dies? I figured they were one of the best and grab a .335 bushing with the shoulder built in and use mandrels for final neck tension.

Or the eric cortina dies both of those seem to be the best for non clickers

 

[max1840]

Does anyone run the short action custom dies? I figured they were one of the best and grab a .335 bushing with the shoulder built in and use mandrels for final neck tension.

Or the eric cortina dies both of those seem to be the best for non clickers

I have the Creedmoor version and use it for 22 Creedmoor. I also have the seating die. I like and use them both. I like the fact that the sizing die bushing sizes to the neck/shoulder junction.

 

[Schw15]

Two loads I have used in my 300PRC with a Defiance action, 30" Bartlien HV, 1-9 twist

Load 1- Berger 245gr, N565 78.2gr, COAL 3.8, MV 2920
Load 2 - Berger 230, N565 77.4, COAL 3.65, MV 2954

That 245 at 3.800 coal is that to the lands or how much jump? Standard reamer not throated longer?

 

[Schw15]

.335 bushing
.306 mandrel
.340 OD after seating

That lapua must be pretty thick. On my 300 norma the loaded rounds are .338

 

[Rocketmandb]

That lapua must be pretty thick. On my 300 norma the loaded rounds are .338

Baseline is ~15 thousandths then I've got a very thin coating of Neolube

 

[GunnyUSMC]

That 245 at 3.800 coal is that to the lands or how much jump? Standard reamer not throated longer?

That is .001 jump to the lands. I cannot say for sure if that is using the standard reamer but I believe it is.

 

[Schw15]

So standard sammi reamer I can single feed the 245s sounds like 3.800 and then mag feed the berger 220s if need be?

 

[vh20]

So standard sammi reamer I can single feed the 245s sounds like 3.800 and then mag feed the berger 220s if need be?

Generally, the LRHTs like a lot more jump, like .030+”. I’m not sure why he’s seating right up to the lands, but if it works out for him then it’s all good. However that’s not the usual case with these bullets. I always seem to end up .020-.035” off the lands with my loads using LRHTs.