300 PRC

#151
This is 75.5gn H1000. There is no heavy bolt lift.
1000000286.jpg
1000000286.jpg
 
#154
If you get "clickers" when opening your bolt, the sammi chamber is too tight. The Alex Wheeler 2 "AW2" reamer opens the back of your chamber a couple of thousands of an inch. This is to give more clearance for extraction.
 
  • Like
Reactions: EUBANKS
#157
Did a velocity ladder test today, 75.6, 75.8, 76 and 76.2 was all within FPS!!!!! The second charge was 5fps slower, the other 3 charges was exactly the same speed! Ran the test all the way to 77.6gr and only then ran into a very faint ejector mark, primer still looked fine and bolt opened like everything else.

Zero pressure signs, touching the lands so I'm going to run 76gr and never look back!
 
#161
Anyone loading Hornady 212?
I was using V550, 80gr, on a 26” DT barrel and pushing 3025 - 3050. Started seeing just the slightest primer flatting. Groups were .7 but recoil was pretty stiff.
 
#163
What about a 10 twist if a guy was going to stay with the 212-215 bullets ? I've got an old shilen that was pulled off my winmag with 180ish rounds on it. Thought about trying a prc in it after my current winmag is done.
 
#164
XP1K said:
What about a 10 twist if a guy was going to stay with the 212-215 bullets ? I've got an old shilen that was pulled off my winmag with 180ish rounds on it. Thought about trying a prc in it after my current winmag is done.
Click to expand...
You aren't taking full advantage of the cartridge with those bullets but other than that go hard.
 
  • Like
Reactions: XP1K and 375fan
#165
375fan said:
I don't know anything about the AW2 chamber you mention. My 300prc is the standard chamber. FWIW , I use N565 in my with 230 A-TIPs. In initial testing I did try using with the 230 A-tip and was up to 79gr of H1000 with no issue. Never tried that 230otm your using.
Click to expand...
Im a big fan of that combo! I found that 76.9 grains of N565 or H1000 works great with the 230 ATIP projectiles in a 1 in 8 twist barrel for a MK22.
 
#171
markl323 said:
I'm developing a load for a new 300 PRC barrel. so far I have tried:

1. H1000 with Berger 220 LRHT
2. N565 with Berger 220 LRHT
3. N565 with Berger 215 HT
4. N570 with Berger 245gr LRHT

- 3 has the smallest groups but very high ES/SDs
- 4 has endless vertical strings
- 1 groups well but has higher ES/SD than 2
- 2 has the lowest ES/SD but does not group as well as 1

I'm continuing with 1 & 2, trying with different primes now.
Click to expand...
Im having almost exactly the same results with these combos.
 
  • Like
Reactions: markl323
#173
New rifle put together for my elk hunt last year. Have about 100rds down and the barrel has started to speed up. Had about a month to get everything dialed in. Hammer hunters did the job. 485yds, total dirtnap

24” 1:9
ADG Brass
Hammer Hunter 199gr
H1000 80gr
3.625 COAL
ZCO 4-20
Ballistic-X-Export-2023-08-10 11:48:20.211860.jpg

IMG_7866.png

IMG_5840.jpeg
IMG_5822.jpeg
 
  • Like
Reactions: Jscb1b and XP1K
You must log in or register to reply here.

Similar threads

J
Cortina 7 PRC Sizing Die w/SAAMI Chamber
Replies
2
Views
274
juice-barrel
J
T
WTB 7 PRC and 6.5 Creed AI M30 barrels
Replies
1
Views
85
Raptorman2014
Raptorman2014
T
Reloading Equipment 300 PRC Hornady brass once fired
Replies
0
Views
79
tprudhomme
T
T
6 PRC loads
Replies
0
Views
81
TenMile
T
cuirc
300 PRC
Replies
2
Views
366
cuirc
cuirc
Top Bottom
Back
Home
Forums
Merch
Alerts