6.5 PRC and 6.5 Creedmoor

[Maidenfan539]

What’s the velocity at 700 for them?

2066 with the PRC and 1957 with the 147.

 

[General RE LEE]

I had a 6.5 PRC but sold it. Great rifle but more than what’s needed for game where I hunt. The 6.5 Creedmoor has much better barrel life so I can do a lot more shooting in the off season.

 

[Maidenfan539]

None of those numbers mean anything in practical terms. Drop is easy to deal with. Energy is irrelevant. Where the rubber meets the road is wind drift. The 156 moving faster is always going to win in the wind and that is the why.

Any advantage you can get to nullify the wind is a positive.

Jeremy

I agree! Windage is always something a person needs to accurately read and appropriately measure for.

 

[BBob]

My son has a short barreled 6.5 creedmoor (22") at 2650 fps and I have a 6.5 prc (22") at 2854 fps. He is shooting the 147's and I am shooting the 156 eol's.

What’s the velocity at 700 for them?

For the above example JBM says:

6.5 CM & 6.5 PRC with an 1800 fps minimum velocity at range.

6.5 CM 1800 fps @ ~700yd, 10 mph wind at 700 yd 31". 700 yd drop 17.7 MOA (850 yd drop 23.9 MOA)

6.5 PRC 1800 fps @ ~850 yd, 10 mph wind at 850 yd 42.9" (700 yds 27.9"). 850 yd drop 20.2 MOA (700 yd drop 14.9 MOA).

 

[Packmansion]

I haven’t run all the numbers yet, but I like to keep my impacts above 2000 fps. Just the paranoid part of me that wants 99% plus odds of full upset lol.
I want to be able to keep the 156 bergers above that to 600. Probably very close with a cm.
Im in the process of building a new hunting rifle, have not fully decided between cm and prc yet. I had full intentions of building a 7prc before listening to the exo podcast with form, so Im sipping the kool-aid in small doses haha.
Also hard to find alot of the less common powders here in Canada, and I have a reasonable stock of H1000, which is better suited to the prc…Can always load it down to cm velocities haha

With a 20" creed youre good to 600 with 143s if you stock with 2000. The 156 burgers are not a super popular bullet and supply does not always keep up with demand. 140 eldm, 143 eldx and 147eldm are cheap and in stock everywhere.

 

[Packmansion]

None of those numbers mean anything in practical terms. Drop is easy to deal with. Energy is irrelevant. Where the rubber meets the road is wind drift. The 156 moving faster is always going to win in the wind and that is the why.

Any advantage you can get to nullify the wind is a positive.

Jeremy

In a 10mph wind at 600 yards it's a 1.7 inch difference. Considering a 6 inch gong at 600 yards is 1 moa... Is it better sure, if I were to place bets on someone with a cm or PRC 7.5 pounds rifles(all setup with scope etc.), shooting prone on uneven ground. The guy with the cm will hit it more for sure. There is a reason people in prs are using the lightest recoiling rifle that they can it works more better. Lighter recoiling rifles have higher hit rates.

 

[ScreamingPotato]

You would have a bullet moving faster than you need it to. What more do you need than 2700 fps out of a 20" barrel with 143s? Is 800 yards not enough?

That's exactly what I get with PRC and factory loads, 2750 actually. My shorty CM was averaging 2540 with factory loads. 200 fps extra is nice, taking it on a Nilgai hunt in the morning and planning to put something bonded through a shoulder.

 

[Packmansion]

Since you asked, I'll give some real-world data out of a 20" creedmoor and a couple 24" PRC's. I handload for accuracy. The 6.5 sta-ball or rl26 will get you lots of velocity, but I couldn't get the accuracy or the temp stability I was after in those powders for the creedmoor. H4350 fetched 2665, with 1/4 moa accuracy so that's what the 20" Creed burns. My son's have killed mule deer, elk, and black bears with that load (along with a few hundred rockchucks). 140 Berger vld is the bullet.
The PRC's my family owns launch a 156 Berger at 2950 ish with rl25. 1/4 to 1/2 inch accuracy depending on which rifle, with very low standard deviation. Those 2 rifles have combined for an impressive number of 1 shot kills on mule deer, elk, and black bears.
To me, the PRC and the Creed are in 2 different categories. A 140 gr bullet at 2665, or a 156 gr bullet at 2950? The only similarity is the bullet diameter. I will hunt with either, but if longish shots at mulies or elk are likely, I'm carrying the PRC.

H4350 is hard to compete with but I've switched to staball with very good results. It is more temp sensitive than h4350 but that's the compromise with ball powder. What is a longish shot for you? I'm not seeing a big improvement between the two 600 yards and in. Also comparing a 20" creed to 24" PRC is going to show more of a difference. A 20" PRC will also lose more speed per inch.