Thread: 7mm mag to a 6.5prc?

I'm using Super performance in mine. Tried 2217 it was quite a bit slower.

Originally Posted by Rated M for Magnum

No argument there, I haven't shot anything other than paper with the wsm but my mate has one and complains that the damage is unreal on anything he shoots. He's trying to find a bullet that does less damage!

Yeah 2900 with the 147 would be great, probably achievable too. I'm sending 143 ELD-X at 2950 but that's maxed out with 2217 and Lapua brass. I might play with the 147s one day...I did hear a lot about them failing in flight and that they aren't as efficient further out compared to the 140 ELDM, but I haven't experienced it personally.

You need to try Hodgdon Superperformance 2960fps with 142 ABLR.

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Originally Posted by Tim Dicko

That makes a lot more sense , not to bad for an 18inch, have to be happy with that.

Still only .260 speeds from a 18" with a long mag and bolt stop Tikka and Hodgdon Superperformance or RL 26

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Originally Posted by 25/08 IMP

Still only .260 speeds from a 18" with a long mag and bolt stop Tikka and Hodgdon Superperformance or RL 26

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loading like for like re powders,projectiles the prc will have it all day over the .260 or creed.different calibre different Load ingredients is not a comparison.Rl26 is not readily available,18"PRCs doing a shade over 2900 with 156 is talked about on some other sites weather you believe that or not, is far superior to what a creed or .260 will do.
What does your 18" .260 do with a 147or 156?

@Tim I reckon you would struggle to get 2900fps with the 147 out of a 20” barrel, I’m getting 2852fps with Re26 (56gn) and 2217 was slower (2760@57gn) but a bit more accurate, as others have said the 6.5PRC slows up a lot when it’s chopped, I wouldn’t do a 20” one again as it’s not that far ahead of my 260? Mine doesn’t like Superformance for some reason either?

If I was doing it again I’d go 20” 7PRC suppressed, then you have the option of some good 150-162gn pills to get the speed back if that’s your jam.

Originally Posted by Yesmate

loading like for like re powders,projectiles the prc will have it all day over the .260 or creed.different calibre different Load ingredients is not a comparison.Rl26 is not readily available,18"PRCs doing a shade over 2900 with 156 is talked about on some other sites weather you believe that or not, is far superior to what a creed or .260 will do.
What does your 18" .260 do with a 147or 156?

Never tried the 156 but 143 or 147 2818 from a 18 " and 2860 from 20" both Tikka

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Originally Posted by 25/08 IMP

You need to try Hodgdon Superperformance 2960fps with 142 ABLR.

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Why? For 10 fps? And at a much higher cost per round?

Originally Posted by Yesmate

loading like for like re powders,projectiles the prc will have it all day over the .260 or creed.different calibre different Load ingredients is not a comparison.Rl26 is not readily available,18"PRCs doing a shade over 2900 with 156 is talked about on some other sites weather you believe that or not, is far superior to what a creed or .260 will do.
What does your 18" .260 do with a 147or 156?

Reloading speeds are equivalent to talking about appendage size. Everyone is up for a boast until an accurate measuring device comes out.

Hornady have said that some people claim 6.5 CM loads that they have not been able to replicate, unless using the 6.5 PRC.

Either someone has a broken chrono or...

Don't get why abusing your equipement to dangerous pressures is some sort of boast?

Originally Posted by caberslash

Reloading speeds are equivalent to talking about appendage size. Everyone is up for a boast until an accurate measuring device comes out.

Hornady have said that some people claim 6.5 CM loads that they have not been able to replicate, unless using the 6.5 PRC.

Either someone has a broken chrono or...

Don't get why abusing your equipement to dangerous pressures is some sort of boast?

agree 100%.wouldnt believe any thing to be fair, not that people are lying but as you said differences in cronos,its like car dynos they all read/calibrated different.hornady claims are wildly over rated on there precision hunter lines in prc.if you can get just above box speeds with hand loads your going good as I heard they got those speeds with rl26 or the equvilent powder they used to use.

I’m sure some of the load data has been tweaked from hogdon or something, hornadys speeds are a fair bit higher on there data. Looking at you blokes results it’s got 75 to 100fps on a creed really at that barrel length. I tend to run no more than book max for I have little need for max speed.

Originally Posted by outdoorlad

@Tim I reckon you would struggle to get 2900fps with the 147 out of a 20” barrel, I’m getting 2852fps with Re26 (56gn) and 2217 was slower (2760@57gn) but a bit more accurate, as others have said the 6.5PRC slows up a lot when it’s chopped, I wouldn’t do a 20” one again as it’s not that far ahead of my 260? Mine doesn’t like Superformance for some reason either?

If I was doing it again I’d go 20” 7PRC suppressed, then you have the option of some good 150-162gn pills to get the speed back if that’s your jam.

It’s good to let your fingers doing the research. The main reason I don’t want a prc is hype. I’d prefer a xm or sa saum. The long actions don’t do it for me. Cheers

Look at gregs 7/6.5 prc, they are extremely efficient

Originally Posted by matto1234

Look at gregs 7/6.5 prc, they are extremely efficient

Yeah dies are annoying. But I have looked, Lapua brass. Not to bad performance

Originally Posted by caberslash

Reloading speeds are equivalent to talking about appendage size. Everyone is up for a boast until an accurate measuring device comes out.

Hornady have said that some people claim 6.5 CM loads that they have not been able to replicate, unless using the 6.5 PRC.

Either someone has a broken chrono or...

Don't get why abusing your equipement to dangerous pressures is some sort of boast?

I also don't get the obsession with chopping barrels. It reminds me of the performance car scene with people lowering their cars. Surely if you don't chop a barrel you use less powder to achieve the same speeds.
My 22" Creedmoor with over barrel suppressor is a pain in the supplejack, but I'm betting losing 4" would give me marginally less annoyance for decreased performance.
I'll put up with a bit more supplejack tangling and a few more grams to carry to retain performance.

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Originally Posted by Eat Meater

I also don't get the obsession with chopping barrels. It reminds me of the performance car scene with people lowering their cars. Surely if you don't chop a barrel you use less powder to achieve the same speeds.
My 22" Creedmoor with over barrel suppressor is a pain in the supplejack, but I'm betting losing 4" would give me marginally less annoyance for decreased performance.
I'll put up with a bit more supplejack tangling and a few more grams to carry to retain performance.

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Or use bullets that work across speed ranges.

PRS has shown that shooting good (higher BC) bullets between 2650-2900 fps is more than adequate, and they run 24-26"+ barrels with little to no taper in order to maximise rifle weight and optimise balance point.

It's quite easy to make a decision on rifle performance, based on the bullet(s) that you want to use. Determine minimum speed for expansion, your acceptable degree of wind-drift uncertainty, and the potential limits of your rifle and bullet combo are revealed. Brian Litz's TOPGUN theory of accuracy has also proven that rifle weight is a determining factor in 'accuracy' when shooting under field conditions. With the same bullet and cartridge, a 28lb rifle with out-shoot and 18lb one which will in turn out shoot an 8lb one.

Don't get the guys who need MAGNUM (whether in the cartridge name or not) for shooting deer within 300 meters or less. The humble 243 will out-perform many of them with dilligent bullet choice.

A 16" rifle is very useful though, just need to know the limits of the setup. I enjoy shooting deer and seeing them tip over in rapid fashion, not going to look for them in the dark. My 7RM with 180 ELDM will confidently tip over any wild animal where I am, issue is lugging it about and putting it into position vs. the handy 7mm08 or 243. Do you really need a 600m+ capable rifle for bush-hunting?