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300 PRC update
- Thread starter DAVETOOLEY
- Start date
Question "A" is a for sure, No. Not with a hand press. Web area on those cases is probably .080" thick give or take, and not like a neck, which gets 1 or 2 more annealing cycles in the manufacturing process. Bigger diameter, thicker, harder. You'll probably break the handle on your press, and if you don't you'll for sure kill the rim when you try to pull it out of the die.
Call Paul Butler @ Evolved Ballistics - 210-872-7790. They're running a 10% off proof barrels this weekend. I've bought the barrel you're looking for (also for my Mausingfield) as well as a Proof AXMC steel prefit from him, prices & service are great. It's likely not in stock anywhere and will take up to 2 months to arrive.
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Alternative Brass? Either I've been under a rock or simply missed this: https://www.rokslide.com/battle-of-the-30-cals/ and let me quote:
I've never used Bertram Brass....but I'm highly interested in more players coming to the 300 PRC brass market.
I've never used Bertram Brass....but I'm highly interested in more players coming to the 300 PRC brass market.
Agreed that more options will be excellent.
I’m boggled that the author wasn’t able to get decent groups with anything with the 300PRC though, including the 225 ELD-M, especially with a Proof blank. Bad chambering job, perhaps?
Don't waste your time or money, Bertram brass is tough and that's the only thing it has going for it.
I've used it in my SAUM and it's the most inconsistent brass I've ever used.
Internal capacity variation was terrible, neck thickness varied on every case, and the flash holes were super jagged and in some cases almost completely blocked
Give it a few years.. I'm betting they'll pick it up
I’m finished with load development on my 300 PRC with 9 twist, 26” 3B bartlein
Two loads
78 H1000, 215 primer, 215 hybrid at .030 shoots 2900 FPS
79.8 H1000, 215 primer, 215 hybrid at .030 shoots 3000 FPS
Both loads are very accurate.
76 and 78 of RL26 were also accurate but I haven’t shot them enough to verify completely.
The Hornady data for a 200 eldx seem to mirror my results with a 215 hybrid.
Two loads
78 H1000, 215 primer, 215 hybrid at .030 shoots 2900 FPS
79.8 H1000, 215 primer, 215 hybrid at .030 shoots 3000 FPS
Both loads are very accurate.
76 and 78 of RL26 were also accurate but I haven’t shot them enough to verify completely.
The Hornady data for a 200 eldx seem to mirror my results with a 215 hybrid.
I'd like to see ADG brass for the 300 PRC. Like some on the forum and others, I've asked ADG and it's a maybe. Good thing i don't have my 300 PRC yet. Action should be here within a few weeks, i hope. got everything except Action and bbl.
Planning on running in a KRG Whiskey 3 with Accurate-Mag CIP length? (3.7")
Planning on running in a KRG Whiskey 3 with Accurate-Mag CIP length? (3.7")
I don't think you are going to be happy with those 3.715" mags...I run the MDT 3.85" metal mags and I can barely place the edge of a Quarter between the end of a retail 225gr ELD-M and the interior wall of the magazine. Now that I'm running some 230gr A-Tips...I'm running awfully close to that inside wall.
I'd probably single feed if I ran the 250's.
Remember...the 3.715" is the OUTSIDE length....the inside length of the magazine says a Max COAL of 3.625"
I'd probably single feed if I ran the 250's.
Remember...the 3.715" is the OUTSIDE length....the inside length of the magazine says a Max COAL of 3.625"
Just looking at the SAAMI specs... the COAL is listed as a minimum of 3.575" with a maximum of 3.700". So, the retailer could be running toward the high end and not be able to feed into a 3.715" mag whose internal measurement is 3.625" max.
So, a 3.850" MDT Mag has an internal specified max COAL of 3.760"....so if the retailer does SAAMI max at 3.700" you only have 0.060" left over...and the thickness of a Quarter is 0.069"...so yea..that's about what I said I had left over.
So, a 3.850" MDT Mag has an internal specified max COAL of 3.760"....so if the retailer does SAAMI max at 3.700" you only have 0.060" left over...and the thickness of a Quarter is 0.069"...so yea..that's about what I said I had left over.
Then you'll love those mags....I just wanted to clear up some confusion others might get if they read that the wrong way....I know people build a rifle and pick out all the parts...and then BAM!!! their chassis won't support the mag length they need...and then it is a frustrating mess.
Remember...shoot long and let your gunsmiths prosper...
Remember...shoot long and let your gunsmiths prosper...
What are you guys using for ammo management with the 300PRC? I have a Tab Gear Bullet Binder for my 308....but that isn't going to work for these 300PRC rounds. Their long action is only 20rds....anyone got some suggestions?
ditto above for Hornady 250gr A-tip, Hornady claims they are more tolerant of twist rate I'm working with the Sierra 230gr pointed Matchking #2251, Sierra recommends 1/8". I selected a 1/8" for my 300PRC, the 230gr MK did very well out to 1774 yds, only 17mils elevation with avg 2837 fps at muzzle.
Lots of variables can affect bullet stability. Twist is but one of them. Bullet length, velocity, along with other variables need to be considered.
I’m shooting the 230 A-tip out of a 10 twist. I’m at 5000 ASL though.
Just got the confirmation from Bartlein that my 1:10-1:6 30in LHGT barrel is ready and being shipped. Can’t wait!
Side note, how deep are people loading 198 flatlines in 300PRC? Is there any hope for loading to mag length? cc @Dan Warner
Side note, how deep are people loading 198 flatlines in 300PRC? Is there any hope for loading to mag length? cc @Dan Warner
Haha, Science! (specifically, how effective is hyper-stabilization at increasing BC) is the goal of this set up. Also 1:10-1:6 LHGT fluting to match will look cool AF.
Selling my 300 build if any of you are interested. Didn't get to shoot it, brand new 1/9 twist PROOF barrel. Great long range hunter.
Hi, new to the forum & interested in the .300 PRC! I will be in the US in November and want to pick up a Redding Die Set. I have found the "77776 Redding CUSTOM Type-S FL Bushing Size Die 300 PRC", but I cannot find a seating die with micrometer. According to Redding it is released, it's called the 300 prc competition seater die part #55776. But I can't find this anywhere (including the imho horrendous Redding website)...
Email Redding. They will recommend one or two dealers to order through. Contact the dealers and tell them what you are wanting to do. They will order the dies and hold them for you.
I just noticed that Little Crow Gunworks has a 300PRC chamber for the WFT2. I don't see myself processing 1000's of pieces of brass for 300PRC...but it is nice to see 300PRC options on the market. I ordered one just because. I know when I processed the unfired Hornady brass...it was really long.
I was doing my own version in 2009 by sizing a 375 Ruger case with a 300 RCM die. My goal then, was to utilize the space that the belt wastes. A divorce prevented me from ever finishing mine, and I give up messing with rifles all together. Just started getting back into it this year, I was pleasantly surprised when I seen the .300 PRC for the first time. My first thought was "at least an ice queen didn't ruin someone's plans" lol
Am I understanding this correctly? It's a 1:10 at the throat and progresses to a 1:6 towards the muzzle?
Correct, also left-handed. It’s for Science! with monometallics, specifically on coning theory and hyperstabilization.
That is awesome man ! I can't wait to hear how well it works!
We're getting into the silly season pre Shot Show 2020. Something will leak out if anyone else is going to load for it. My bet is someone will.
I'd like to see Berger load 300 PRC but I won't hold my breath. The Berger 338 LM with the 300 grain OTM is a very good value. I'm seeing SDs less than 10. The Hornady ELDMs in 300 PRC are running SDs around 18 or 19.
Question all, I’ve read this entire thread but still don’t feel super confident. I’m gonna have a stock inletted with DBM for 300 PRC.
Will be shooting the factory 225 Eldm.
Do I need 3.775 or 3.850 DBM? And what magazine? Thanks in advance.
Will be shooting the factory 225 Eldm.
Do I need 3.775 or 3.850 DBM? And what magazine? Thanks in advance.
You want the 3.850 length magazines (COAL 3.78ish) for 300WM, which both MDT and Accurate make. Alternatively you can get 3.850 338LM magazines and a feedlip adjustment tool.
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