300 PRC update

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
Anyone have an COAL number for case loaded with 230 ATIP, 230 Berger and/or 215 berger where the bullet is seated above the neck shoulder junction?
I can give you the 230gr A-Tip measurement later tonight when I return home from work....13hr days man......getting to me. I can also give you the 250 A-tips if you like. I don't have any Bergers in house...I have some 245 EOL's on the way though.
 
  • Like
Reactions: JohnnyI

JohnnyI

Private
Belligerents
Jul 18, 2014
19
0
2
I can give you the 230gr A-Tip measurement later tonight when I return home from work....13hr days man......getting to me. I can also give you the 250 A-tips if you like. I don't have any Bergers in house...I have some 245 EOL's on the way though.
awesome... Thank you. Just trying to see what magazines I need to correctly fit.
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
CIP length mags is all I use...and my 250's won't fit in them...they get single fed into the rifle.
 

LongRangeAggie

Private
Hessian
Minuteman
Aug 27, 2019
51
13
12
Central TX
awesome... Thank you. Just trying to see what magazines I need to correctly fit.
I use Accurate Mag's 300 RUM 3.85 mag

 

Jlknights61

Sergeant of the Hide
Belligerents
Minuteman
Feb 15, 2019
166
251
69
Well I finally made it to the range and have some 20” data to share.

This was a brand new barrel shooting factory hornady 225 eld-m. This was my first time using lab radar so while I shot the entire 20rd box I only have valid velocity readings for 17 rds. All shots were fired with Nomad-30 attached.

The average velocity = 2721 FPS.

High = 2756 FPS
Low = 2685 FPS
ES = 71 FPS

This equates to roughly a 22 FPS loss per inch from hornady stated test barrel velocity.
 
  • Like
Reactions: GMZ and b2lee

Bradv86

Sergeant of the Hide
Belligerents
Minuteman
May 18, 2019
156
79
34
TX
Has anyone tried out the new 208 LRHT from Berger? Might be able to eek out a few more FPS while matching the bc of the 215.

Been wanting to see results as well for this one. I plan on trying this bullet once my rifle is complete.
 

Mk32784

Private
Belligerents
Minuteman
Aug 1, 2017
442
236
49
If anyone has a Amp Gen 1 machine and ADG brass, just got my samples tested:
Standard program 65 with pilot #31
 

b6graham

MMPRL
Belligerents
Jul 29, 2014
4,114
3,309
219
Has anyone tried out the new 208 LRHT from Berger? Might be able to eek out a few more FPS while matching the bc of the 215.

they beat out the 215 and 200.20x when used in a 308 from my sources
 

Mr. W

Private
Minuteman
Jan 9, 2020
13
3
6
I am going to be picking up a 300PRC. Ran the ballistics with the 338 Lapua. They are neck and neck out to 2000 yards and a lot cheaper to shoot. This is just a great cartridge and like said above, should have been out a long time ago. Can’t wait to take one out to a mile and past.
 

Fishkat

Aka Fishcricket
Belligerents
Feb 14, 2017
277
33
34
68
Birmingham, Alabama
Well I finally made it to the range and have some 20” data to share.

This was a brand new barrel shooting factory hornady 225 eld-m. This was my first time using lab radar so while I shot the entire 20rd box I only have valid velocity readings for 17 rds. All shots were fired with Nomad-30 attached.

The average velocity = 2721 FPS.

High = 2756 FPS
Low = 2685 FPS
ES = 71 FPS

This equates to roughly a 22 FPS loss per inch from hornady stated test barrel velocity.
For reference and to add to, out of a brand new 22.5” barrel I fired one 212 ELDX at 2835fps and fired one 220eldm at 2747.
 

HonkyTonk86

Private
Hessian
Minuteman
Oct 31, 2018
48
18
12
Santa Cruz, CA
FINALLY got this build together... gonna do barrel break in this weekend and get initial velocities. ADG brass 225 ELD 215M... I've got RL26, H1000, N570 to play with. Any recommendations for starting charge weights??
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
I'd just say...don't think the initial velocities are set in stone....the ADG brass is thick...and I initially ran my necks through a mandrel die to give less neck tension. That first loading on ADG brass and a normal sizing die...will make the neck tension way too tight for me. Second firing and a .336 bushing for me...everything is golden...and I still run through a neck mandrel just to make sure. Barrel will speed up as well...at some point...less than 200 rounds.

Starting charge?....I'd make a few starting at 70gr and work my way up. The 225 ELD-M is a fine bullet. IF I always shot 1000 yards and less...I'd use it exclusively.

I hope you have a great time with your 300PRC....I'll be at the range getting a good zero for my 300PRC and new ZCO scope. Can't wait for next months Mile competition...woo hoo!!
 
  • Like
Reactions: HonkyTonk86

HonkyTonk86

Private
Hessian
Minuteman
Oct 31, 2018
48
18
12
Santa Cruz, CA
Currently running them all through a mandrel... this brass is very impressive so far. Thinking to use the 225 until barrel speeds up and the sub 1k then work on a 230 A-tip load for 1k+
 

GMZ

Retired
Belligerents
Mar 15, 2007
209
150
49
PNW
Been wanting to see results as well for this one. I plan on trying this bullet once my rifle is complete.
they beat out the 215 and 200.20x when used in a 308 from my sources
I see they are pointed from the factory thats why the bc is so high. OTM and PV have some in stock so I may pick up a box to try out.

Still no RL26 so Ill be sticking with the H1000 I have on hand, enough to burn out the barrel and some extra IMR 7977. I might do a min charge (70gr) of 7977 under a 225 ELD for 50 rounds just to fireform the brass and break in the barrel then load 76.5-77.5 of H1000 with 225 ELD and 215 Hybrids and see where things fall out. Depending on speeds after 200 rds I might try the new 208 LRHT. Barrel should be done in about a week.
 

m1ajunkie

Full Member
Belligerents
Feb 22, 2010
703
7
22
31
Atlanta, GA
Went out tonight to run my handloads across the chrony and get an idea where I need to be for a powder charge. After doing that, I've got a couple questions....

Ruger Precision Rifle 300PRC
225 ELD M
H1000 powder- I bought 8 lbs before I got the rifle so I'm pretty well committed to it.
Bullets loaded .003 off the rifling
Federal 215M primer
Magneto speed V3 chrony

Hornady 225 ELDM factory ammo- 2850 fps average

75.6- 2749
75.8- 2780
76.0- 2781
76.2- 2780
76.4- 2784
76.6- 2790
76.8- 2818
77.0- 2793
77.2- 2818
77.4- 2809
77.6- 2865
77.8- 2842
78.0- 2856
78.2- 2896- bolt lift a little sticky
78.4- 2856


1. I was hoping to be a little bit faster with the 225 ELD M. I'm guessing to get faster I'd need to try a different powders?
2. I was thinking usually a barrel would have a low node and a high node..... I'm only seeing one node around 76 grs. Am I missing a second higher node somewhere in my data?
3. Given how close the node appears to be around 76.1 that's what I'm going to target. Any reason I might run into trouble only running at 2780 fps assuming this load actually groups well?

My goal is to use this load for shooting between 1000-2000 yds.
 

Rocketmandb

Gunny Sergeant
Belligerents
Minuteman
Nov 2, 2018
766
728
99
78.0 -78.4 looks like a node to me. 78.2 could be a fluke
This is why I always load two ladders worth. I'll run one, and then the second is used to validate areas of the first, or to refire certain loads that either miss on the chrono or are out of whack.
 

Rocketmandb

Gunny Sergeant
Belligerents
Minuteman
Nov 2, 2018
766
728
99
1. I was hoping to be a little bit faster with the 225 ELD M. I'm guessing to get faster I'd need to try a different powders?
How many bullets do you have down the barrel? Also, I think the RPR is 26" on the barrel, correct?

Last weekend I helped a friend do load development on his carbon-barreled hunting rifle (26" Bartlein barrel - the whole rifle weighs like 6 lbs!). Factory 225s were getting him in the low-mid 2900s (~2930, if I remember correctly). So, 2850 on the factory 225s seems a bit on the low side. And we found a good node at ~2880-2900 with the ladder.

Interestingly, the factory ammo out of his rifle shot horribly - and I mean HORRIBLY. He was lucky to get 1.5 MOA on a 5-shot group - and it's not him, or me, because he's also had other competition shooters get the same results. He wasn't planning on getting into reloading now, but I convinced him to let me load up a ladder using RL26 and Berger 230s. The ladder was very consistent (and actually better groups throughout the whole ladder than Hornady factory!).

As mentioned, we found a node at the 2880 range, then tried to load some rounds at the range to validate. Unfortunately, the wind was really blowing and it was tough to get the portable scale just right, so the validation rounds were a bit hot at just above 2900, but they still grouped okay (and had a 5 SD...). I'm loading up some more for him at the proper charge weight for the next trip.

And oh yeah, he's ordering reloading stuff :)
 
Last edited:
  • Like
Reactions: b2lee

Mk32784

Private
Belligerents
Minuteman
Aug 1, 2017
442
236
49
Last day at the range before loading up for the NF ELR Match. The 2850 range is a solid node for the RL-26 and 230 ATips, it's a little slower then I was dreaming about but it's shoots lights out, consistent out to 2000+ yards.

Also got a mod-ed http://adjustablebagrider.com/ for the MDT ACC which is pretty cool. With the PU 3D ELR Bag it's nice for getting that super fine adjustment just before you send it.
 

Attachments

  • Like
Reactions: HonkyTonk86

b6graham

MMPRL
Belligerents
Jul 29, 2014
4,114
3,309
219
30 Sherman Magnum reamer shipped earlier this week
barrel is sitting waiting
338SR has serial number allocated

might throw a quick 10 rounds through it to find a rough speed and load up the other 90 pieces

we have a D-Day themed match next weekend so it would be appropriate to shoot this. would be super comical shooting PRS stages with it but eh why not need to fireform the brass anyways
 
  • Like
Reactions: jasent

AXMC338L

Private
Minuteman
Aug 15, 2019
27
25
18
Last day at the range before loading up for the NF ELR Match. The 2850 range is a solid node for the RL-26 and 230 ATips, it's a little slower then I was dreaming about but it's shoots lights out, consistent out to 2000+ yards.

Also got a mod-ed http://adjustablebagrider.com/ for the MDT ACC which is pretty cool. With the PU 3D ELR Bag it's nice for getting that super fine adjustment just before you send it.
Awesome. Hoping I can find something similar with H1k and the 230 Bergers.
 
  • Like
Reactions: Mk32784

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
Well...today I shot a few groups just above 1/4"...in the .30 MOA range....one at .26 MOA....but the node may be too dangerous with Summer coming here in N. KY. It was only 78F when I shot today....and my RL-26 load was pushing 2990 to 2996 on virgin ADG brass and 230gr A-Tips.

It was more about dialing in my new ZCO 5-27 MPCT3 scope....and getting solid MV data since I started using a Sinclair carbide neck mandrel to open them up another 1 thou after sizing with the .336 neck bushing. I had 1 bad group today.... .75" Would have been the best group of the day...but I yanked the trigger like a newb and threw it left.

Will revisit the muzzle velocity next week with a reduced load and non virgin brass. I want to get my MV spread as low as I can....for some 1 mile work coming up at TVP.
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
I'm getting 95.5gr of water in once fired ADG brass. What's everyone else getting?
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
Yea...but the water wants to dome out...so I take a razor blade and trim the water reasonably flat....I averaged over 10 pieces.
 

Steel head

Feral kitten
Belligerents
Aug 3, 2014
8,583
13,175
219
Washington
Went out tonight to run my handloads across the chrony and get an idea where I need to be for a powder charge. After doing that, I've got a couple questions....

Ruger Precision Rifle 300PRC
225 ELD M
H1000 powder- I bought 8 lbs before I got the rifle so I'm pretty well committed to it.
Bullets loaded .003 off the rifling
Federal 215M primer
Magneto speed V3 chrony

Hornady 225 ELDM factory ammo- 2850 fps average

75.6- 2749
75.8- 2780
76.0- 2781
76.2- 2780
76.4- 2784
76.6- 2790
76.8- 2818
77.0- 2793
77.2- 2818
77.4- 2809
77.6- 2865
77.8- 2842
78.0- 2856
78.2- 2896- bolt lift a little sticky
78.4- 2856


1. I was hoping to be a little bit faster with the 225 ELD M. I'm guessing to get faster I'd need to try a different powders?
2. I was thinking usually a barrel would have a low node and a high node..... I'm only seeing one node around 76 grs. Am I missing a second higher node somewhere in my data?
3. Given how close the node appears to be around 76.1 that's what I'm going to target. Any reason I might run into trouble only running at 2780 fps assuming this load actually groups well?

My goal is to use this load for shooting between 1000-2000 yds.
Looks like the low and high speed nodes are potentially pretty wide.

I’d really consider a bit more jump.
 

nealm66

Sergeant of the Hide
Belligerents
Minuteman
Jan 14, 2020
141
39
34
How many bullets do you have down the barrel? Also, I think the RPR is 26" on the barrel, correct?

Last weekend I helped a friend do load development on his carbon-barreled hunting rifle (26" Bartlein barrel - the whole rifle weighs like 6 lbs!). Factory 225s were getting him in the low-mid 2900s (~2930, if I remember correctly). So, 2850 on the factory 225s seems a bit on the low side. And we found a good node at ~2880-2900 with the ladder.

Interestingly, the factory ammo out of his rifle shot horribly - and I mean HORRIBLY. He was lucky to get 1.5 MOA on a 5-shot group - and it's not him, or me, because he's also had other competition shooters get the same results. He wasn't planning on getting into reloading now, but I convinced him to let me load up a ladder using RL26 and Berger 230s. The ladder was very consistent (and actually better groups throughout the whole ladder than Hornady factory!).

As mentioned, we found a node at the 2880 range, then tried to load some rounds at the range to validate. Unfortunately, the wind was really blowing and it was tough to get the portable scale just right, so the validation rounds were a bit hot at just above 2900, but they still grouped okay (and had a 5 SD...). I'm loading up some more for him at the proper charge weight for the next trip.

And oh yeah, he's ordering reloading stuff :)
Ya, not great results from factory 225’s in mine either but handload 225’s were excellent. Odd really since bullet seating was same just different powder and better concentricity average, not enough to make as much difference as it did. Very curious
 

Mk32784

Private
Belligerents
Minuteman
Aug 1, 2017
442
236
49
Anyone having issues with the ADG brass on the 2nd firing?

I am loading the virgin brass74.2gr of RL26 first loading it’s butter smooth.

I FL size bump it back 4 thou using a whidden die and then load it the same. But now it’s causing hard bolt lift. Chambers fine but after firing it’s tight. Shoots great... so I don’t think it’s a pressure issue.
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
This is from my ADG brass yesterday....Shot fine groupings...but was way over pressure...230gr A-Tips doing 2996fps with RL-26 and a lot more powder than you. However, bolt lift was normal.

target_image2.jpg

Sorry for the bad pic...Range Buddy and I don't get along sometimes.
 
  • Like
Reactions: TripleBull

Rocketmandb

Gunny Sergeant
Belligerents
Minuteman
Nov 2, 2018
766
728
99
i'd vote this. down at the web/bottom of the case

die issue most likely
I don't neck size, so this is not coming from a point of experience, but wouldn't the cases be okay for a few firings at least? It seems odd that they'd get sticky after one firing.

Just to double check, these cases weren't once-fired from someone else's rifle, right?
 

Steel head

Feral kitten
Belligerents
Aug 3, 2014
8,583
13,175
219
Washington
I don't neck size, so this is not coming from a point of experience, but wouldn't the cases be okay for a few firings at least? It seems odd that they'd get sticky after one firing.

Just to double check, these cases weren't once-fired from someone else's rifle, right?
If your pressures are up they will get tight after 1 firing.
 
  • Like
Reactions: Rocketmandb

b6graham

MMPRL
Belligerents
Jul 29, 2014
4,114
3,309
219
If your pressures are up they will get tight after 1 firing.
yup this.

I've had this problem before with my 7SAW.

on virgin brass. 162 eldm at 2860 node. worked well. no pressure ever

next firing failure to extract and hard bolt lift quite often.

load to 2800 node. fine for a few hundred rounds. then fail to extract and hard bolt lift.

small base die and same loading protocol. no issues at either node.

turned out to be a die issue. have a new set now. yeah the brass is def gonna be fucked earlier that expected but oh well nbd
 

m1ajunkie

Full Member
Belligerents
Feb 22, 2010
703
7
22
31
Atlanta, GA
Anyone shooting the Sierra 230 SMK? Browsing back through this thread I'm not seeing much discussion around it even though it appears to have an attractive BC.
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
Anyone have any experience running 250gr atips with H1000 powder?
I don't....I have experience with the 250's and Retumbo, N565, and RL-26....of which...I prefer N565...after several testing sessions. I have also gone back to N565 on the 230's
 

codym

Private
Belligerents
Minuteman
Jan 17, 2018
341
85
34
New Mexico
b2lee whats your n565 230 ATIP load. All my components will be in this week and this is what I'm going to work up!
 

b2lee

Stealthy
Belligerents
Minuteman
Dec 30, 2018
1,081
1,183
119
51
N. KY
b2lee whats your n565 230 ATIP load. All my components will be in this week and this is what I'm going to work up!

Well...as we transition from winter to summer...my loads have been dialed back a bit. I was running on the ragged edge for cold weather...and have been going down a full grain here and there. I'm currently at 75.0 grains of N565 in ADG 2x fired brass. I give myself 3 thou to fit in the magazine....heh

Depends on your gun..but you may find a nice node around 74 grains if you care about paper groups at 100yds.

Yea...work up...every gun is different...what works in mine may be dangerous in yours....so 70.0 and work up and find that velocity flatspot....
 
  • Like
Reactions: b6graham

codym

Private
Belligerents
Minuteman
Jan 17, 2018
341
85
34
New Mexico
Thanks I'm just looking for a starting point, we are really hot here already. I will start at 70 and see where I fall. I have a 1/8 and I'm gonna be looking for a ELR match load first so if I single feed it's ok. I do have the extended wyatt 300 PRC box that will fit 3.85. What jump are you guys starting with the ATIPS? Sorry for all the questions but i'm not gonna have a bunch of time before this first match.
 
  • Like
Reactions: Patrick61

AXMC338L

Private
Minuteman
Aug 15, 2019
27
25
18
Had some good luck today with H1k, 230 bergers and 220 ELDX. Both loads @ 77.5gr were stacking them. Both loads were true @ 370yds based off labradar velocity’s. This barrel wants to shoot! It’s a 1:9 Bartlein put together by Aaron Roberts. Got to find a longer range to see what this sucker can really do. :-(54A527B8-8D86-45EB-9851-E34DD1E3096C.jpeg
 
Last edited:

Mk32784

Private
Belligerents
Minuteman
Aug 1, 2017
442
236
49
Well...as we transition from winter to summer...my loads have been dialed back a bit. I was running on the ragged edge for cold weather...and have been going down a full grain here and there. I'm currently at 75.0 grains of N565 in ADG 2x fired brass. I give myself 3 thou to fit in the magazine....heh

Depends on your gun..but you may find a nice node around 74 grains if you care about paper groups at 100yds.

Yea...work up...every gun is different...what works in mine may be dangerous in yours....so 70.0 and work up and find that velocity flatspot....
What die are you using for sizing?