Northern Shooter
AH fanatic
I have a .375H&H as well that I've considered using for this but from what I'm reading it really starts to fall off after 300m and has more drop than the 338 and 30 magnums.
Compare barrel twistsAlso contemplating a long range hunting rifle in the .30 cal or larger size. I initially thought a 300 win mag was the one to go for, but when checking the options I just learned about the 300 PRC. It is definitely all the rage at the moment.
I have a question though. According to https://www.loaddevelopment.com/300-prc-the-top-30-cal/, it is superior ballistically to the 300 win mag at longer ranges. But mostly because of the higher BC bullets you can load in it. Now my question to you guys is, I hand load my ammo, and will for this new gun too, why can't I just load those same high BC bullets in a 300wm cartridge and shoot it at that same velocity, then it should in theory be ballistically similar to the 300 prc shooting that same bullet at that same velocity?
Or am I missing something?
Ah! Did not think of that. I did notice that two of the rifles I looked at that they only offer the 300wm in a 1-10 twist and the 300 prc in a 1-8 twist, would newer longer high bc bullets be able to be shot from both those twists?Compare barrel twists
1-10 twist in the 300WM is standard. The 1-8 twist in the 300 PRC doesn't surprise me. The 1-8 twist is made for the heavier, longer bullets.Ah! Did not think of that. I did notice that two of the rifles I looked at that they only offer the 300wm in a 1-10 twist and the 300 prc in a 1-8 twist, would newer longer high bc bullets be able to be shot from both those twists?
See if this link works. Berger has good reference data. https://bergerbullets.com/twist-rate-calculator/Ah! Did not think of that. I did notice that two of the rifles I looked at that they only offer the 300wm in a 1-10 twist and the 300 prc in a 1-8 twist, would newer longer high bc bullets be able to be shot from both those twists?
I recently made a similar chambering decision. In my case, the goal was a good all-around plains game rifle which I would also use for elk/moose if the opportunity ever arises. Ammo availability was a big deal to me since I don't handload yet, so I ended up going with a .300WM. I don't hunt at the ranges you do, I mainly wanted the extra energy.One missing options I seem to have in my current cartridge arsenal is a long range hunter (up to 600) for Elk/Moose sized game.
For those of who who hunt these distances or if you one day plan to do so, would you consider the 300 PRC or something else?
I'm also considering 300 WM, 338 WM, 7mmRM, and 7mm PRC.
Any others to consider? Looking to have ballistics that maintain >1500lb-ft and 2000fps at 600m.
I know it's not on your list but an 8x68S or its American equal the 325 WSM will be just about perfect for you application, they put big stuff down from far out.
I have heard the same thing from people using the round on game.As eluded to by Puddle and a few others in previous posts the advantages of the new long range cartridges like the 6.5 & 6 creedmoor, the 6.5, 7, & 300prc's, and the 6.8 western are in their modern SAAMI spec's. The spec's require tighter machining tolerances, shorter cases to seat long high bc projectiles, and tighter twist rates (1:8 or 1:7) to stabilize those long bullets.
1.Tighter machining tolerances have dramatically improved accuracy. For those of you like me remember the 80's and 90's a sub 1 moa rifle was on par with the search for the Holy Grail. Almost unobtainable. I have been blown away by the amazing increase in accuracy of sporting rifles after the turn of the century. Now many companies guarantee a sub moa 3 shot group at 100 yards. The new cartridges maximize the improvement in tolerances to customize the loaded ammunition to specified tolerances which improve accuracy.
2. Due to the shorter case design long projectiles can be seated further out of the cartridge to increase powder capacity. Also the SAAMI spec's dictate longer throats for long projectiles.
3. Tighter twist rates are required to stabilize heavy, long, high BC projectiles.
This is why the new cartridges have an advantage over older cartridges for long range applications. The old cartridges can be customized to duplicate these advantages but it is a custom rifle with custom reloading that is required. Lastly I wanted to add my two cents regarding bullet selection. The long heavy bullets needed to increase ballistic coefficient (bc) also increase the sectional density (sd) so shooting a standard cup and core bullet (eld-m/eld-x or Berger VLD) is okay because there is a lot more lead and copper than a standard bullet. For example in 30 cal the standard bullet for a 300WM is 180 (.271 sd) while for the 300 prc is 212 eld-x (.319 sd) or the 225 eld-m (.339 sd). All things being equal higher sd means more penetration. Lastly ballistic gel testing has shown that there really is no difference between the eld-x and eld-m on terminal performance when bullets of equal weight have been fired into ballistic gel.