7-6.5 PRCW - N160 findings

[marchx]

I haven’t tried N165 and my original post was how N160 showed promise against my current load of N555 in a small sample test @100 yards. I finally got to go test it at 600 yards where I’ll be using it. There is no long range matches within reasonable distance of me.

Once again this was in my rifle so your mileage may vary. 32” Brux, 8.5 twist, Lapua. Brass, sorted-pointed 180 hybrids. My current load of N555 is 55.9 grains and gives me a velocity of around 2890. I tried 2 loads of N160. 55.7 and 56.1. Those were the two that showed the most promise initially. 55.7 shot the best and in just a 10 shot sample of all three loads the N160 @ 55.7 shot 2.3” group. With an average velocity of 2860. The N555 shot a 2.7” group with a velocity of 2892. The ES and SD were basically identical for all intent and purpose. When I get time I’m gonna run a larger test but for my rifle it’s showing promise against N555. I didn’t save the target pictures but I’m gonna shoot a couple of mach strings when I get a chance, but I am going to carry N160 to the next match 10/11 to put it to the test. Anyways I’ll post it when I do it. Blessings to you all.
Dwayne

You really are a pastor?

 

[Hoekight]

You really are a pastor?

I really am. I pastor Faith Baptist Church of Old Town, FL. Congregation of about 275. I’ve pastored there for 14 years.http://faithbaptistchurchofoldtown.org/pastors-page

 

[marchx]

I really am. I pastor Faith Baptist Church of Old Town, FL. Congregation of about 275. I’ve pastored there for 14 years.http://faithbaptistchurchofoldtown.org/pastors-page

Amazing. I considered being a priest for a while but abandoned the idea.

 

[cooler zero]

I run the numbers in grt and velocity in n165 for 7prcw looks tragically low. I don’t see how barrel life argument holds its validity if we pack a lot more powder into that case in comparison to n555 and increase pressure as well. We also increase the recoil. In order for this project make any sense it should print much bettee groups. Does it?

Maybe so but in my 7PRCW 59g was pushing a 180 hybrid at over 2900. 32 inch krieger barrel 8 twist and 210m primer. Chronograph used was a Garmin

I run the numbers in grt and velocity in n165 for 7prcw looks tragically low. I don’t see how barrel life argument holds its validity if we pack a lot more powder into that case in comparison to n555 and increase pressure as well. We also increase the recoil. In order for this project make any sense it should print much bettee groups. Does it?

 

[Laurie]

I run the numbers in grt and velocity in n165 for 7prcw looks tragically low.

If you expect GRT (or QuickLOAD) predictions to be just as promised, may I sincerely interest you in buying London Bridge? Short of cash, so very cheap for a quick sale.

More seriously, QL and GRT are fine for doing a sort on potentially useful combinations, and beyond that charge vs incremental table printouts to take to the range in testing sessions to compare predicted against actual. The programs' default values are frequently way out, and that, vitally, includes the key Ba values. Viht serially classes its products as 'too slow' compared to some from other manufacturers, and this shows up in the only arena that matters - real performance in the field or on the range as shown by a decent model chronograph. (...... or for those into diving straight to maximum weight charges predicted by the programs without working up, blown primers and similar.) It's not just internal ballistic programs that are affected, but burning-rate charts and lists as well as they're all based on data from individual manufacturers.

I'm sure it does the company's sales no good as high velocity is the number one priority for many handloaders. When bullet companies make decisions on the powders they'll test for their next reloading manual or online update, QuickLOAD is their usual starting point, and until recently N160 in particular came out very badly against competitors in terms of predicted MVs, so this product barely figures in most manuals. QL's compiler changed the default to make it considerably 'quicker' between versions 3.8 and 3.9, but I still reckon it's too 'slow'.

 

[marchx]

@Laurie surely GRT is a reference point for assumptions in reloading process. I will do some testing n165 vs n555 and will come back to you with results.

 

[JLT]

Maybe so but in my 7PRCW 59g was pushing a 180 hybrid at over 2900. 32 inch krieger barrel 8 twist and 210m primer. Chronograph used was a Garmin

This is consistent with my experience - ~2,915 or so. It's actually a fairly mild load, pressure-wise.

 

[Fire Dog]

This is consistent with my experience - ~2,915 or so. It's actually a fairly mild load, pressure-wise.

Also the speed that the original developer AW had in mind, 2,850-2,900 and helps keep the “Clickers” at bay and preserves case life.
Maximum speed seldom equals maximum accuracy.

 

[cooler zero]

Also the speed that the original developer AW had in mind, 2,850-2,900 and helps keep the “Clickers” at bay and preserves case life.
Maximum speed seldom equals maximum accuracy.

 

[cooler zero]

There were no clickers with this load in my rifle. As always work up your load

 

[Blackrockcustom]

Just talked with Jimmy. Been to his shop/range. Good guy.

Mr. Wheeler
have you tried 190 A-tip? any ideas on where to start? I'm in the process of building a hunting rifle with a hell canyon armory barrel, Weatherby 307 action. with a peak 44 stock. I would like to set it up for deer/ antelope/ Elk. Thank you for any info.