Closed

[338 dude]

Sounds like your neck is a little tight if your a hand loader you might want to start turning necks on your brass I like to have .004or even .004 clearance

.003 or .004 clearance

 

[8andbait]

closed

 

[coyotezapper]

I am a little confused as well? I have been loading for the 300 PRC since last October and all my work has been with Hornady bullets from 208's to 225's with no issues at all. So far used Reloder 26/25 and H1000 and Retumbo and IMR 8133.
My barrel is a Bartlein as well 1/10 twist

 

[coyotezapper]

I'm starting this to hopefully give info to those who are interested in the
300 PRC.

Specs on rifle
Lone peak stainless razor action
Bartlein 3B barrel, 26", 9 twist
McMillan game hunter
Hawkins BDL
Hawkins brake
Trigger tech trigger

Bare rifle
View attachment 143612

With NF NX8 2.5-20x50
View attachment 143613

This a very tight freebore, only .0005-.0008 over .308.

I started off with 4 212 Eldx, 77.5 H1000 and 215 primers. I fired all 4 over the magnetospeed. Average velocity was 2961, no signs of pressure. They were very difficult to chamber even at a .015 jump.

I then cleaned the barrel, please no comments on break in, I do what I want lol.

Next I shot 1 225 ELDM with 75H1000 and 215 primer, this one went 2855 on a clean cold bore.

Next I shot a three shot group, these were difficult to chamber as well but a little easier than the ELDX.

View attachment 143614

I cleaned again...

Next up was the 215 hybrid at .015 jump with RL26 and cci250 primers.
I had a 76, 76.5 and 77 so I fired the 76.5 load with a clean bore, 2955 FPS then the other two at the target.

View attachment 143616

After that I moved back to 324 yards for the ladder test, it was windy, 88 degrees (mirage) and sunny.

I started with a clean bore, 215 HYB at .015 jump and RL26 with cci 250's.

Loads ranged from 75 to 79.5 grains in .5 increments. About 2.5" of vertical over 4.5 grains with bad mirage and inconsistent wind.

View attachment 143619

I never had any pressure signs even with 79.5 this is the 79.5 brass

View attachment 143620

I had two other ladder test with H1000 and 225 ELDM's and 212 ELDX's with H1000 and RL26 but due to the effort needed to chamber the Hornady bullets I decided to work with the 215 hybrids for the first 100 or so shots to see if the throat "loosens up" a little.

I will periodically try to chamber the Hornady bullets, once the start to chamber easily I'll start testing them.

Tomorrow I'm going to test groups with 215 HYB, RL26 and cci 250's

I've loaded up 76.1, 76.4, 76.7 and 77 since I liked that charge area on the ladder test and the speed is right where I want it 2950 ish.

Only 21 rounds through the bore so far.

I plan to get out earlier tomorrow to beat the heat and mirage.

Can you post a picture of your reamer specs?

 

[DUSTY NOGGIN]

I'm not trouble shooting anymore, I know what the problem is and it's getting taken care of

what did you find ??

 

[coyotezapper]

Loaded rounds are .337, fired brass is .341.

I thought the same thing originally.

Then I thought maybe the shoulder was touching but I had .004 longer on Fired brass compared to new unfired brass.

The one round I was able to extract without having the bullet stay in the barrel had land marks almost to the brass. Freebore is too tight, like no freebore at all.

I'm not trouble shooting anymore, I know what the problem is and it's getting taken care of.

Thanks.

This statement contradicts what you are saying above. Above you state that you are jumping the bullets but if they have land/groove marks then you are jamming and not jumping.

Sounds like its a minimum spec reamer.

 

[DUSTY NOGGIN]

that makes sense

 

[8andbait]

cloaed

 

[8andbait]

Closed

 

[DUSTY NOGGIN]

reamer problem .. he's starting another thread

 

[PredatorSlayer]

Closed

Why is everything showing closed?

 

[Deezel]

Why is everything showing closed?

From what I see, the OP has decided to edit and delete all his posts. It's a shame actually because it can turn very informative threads into nothing more than drivel......

 

[venatic]

Yes I think I now understand what he was seeing based off this post from back in January. You have to read the last page of posts....l

https://www.longrangehunting.com/th...0-28-nosler-300-prc-si-wildcats.214254/page-4

 

[8andbait]

I deleted everything, people were getting confused and it was going the wrong direction.

It was meant to be informative but due to the reamer problem it would have only caused problems.

I'll start it again once the barrel is finished and I can have definitive data to share.