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  #1  
Old 10-24-2017, 02:47 PM
rhouser rhouser is offline
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Default 17HH - BERGER 25 and CFE BLK

I am breaking in a new CZ 527 Varmint and doing load development at the same time.

I went right to the CFE BLK because it is new.

I was able to nail a 20gr load right off the bat. For my gun with the NOS VGN 12.8gr of CFE BLK gives me a 5 shot ragged hole at 100.

For the 25gr Berger, I started with the 11.6 gr load on the HODGDONS site. I am getting Vertical stringing with a 3/4 inch 5 shot string with all 5 touching. (almost perfectly vertical).

I can up the powder based on the primers showing 0 flattening or I can play with the COL a bit.

Is anybody else using the Berger or Hornady 25gr with CFE BLK. Any findings would be appreciated.

v/r rch

Last edited by rhouser; 10-24-2017 at 02:49 PM.
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  #2  
Old 10-26-2017, 12:24 PM
rhouser rhouser is offline
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I didn't hear from any CFE BLK 17H Hornet shooters.

On the off chance that there aren't any, I am going to consider this a chance to offer a report.

I shot both the 25gr VMAX and the Berger 25gr loaded to 11.6 gr of CFE BLK. I used the FED GM 205 primers. 11.6 grains of CFE BLK is the max charge listed on the Hodgdon load site. I loaded both to 1.480 using a SP comparator on a digital Starrett caliper.

I got vertical stringing from both loads. The primers as still well rounded with mild flattening.

Plan- I will first up the powder by .1 grain and reshoot. I will bring my MS chrony and see what the velocities are doing. If up doesn't help or velocities look out of line, I will start down at .1 grain.

By all reports the Bergers should be fine shooters, I just need to find what my 527 Varmint likes.

Thanks to all that make this a great site.

v/r rch

Last edited by rhouser; 10-26-2017 at 12:28 PM.
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  #3  
Old 10-26-2017, 02:59 PM
moorepower moorepower is offline
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I would bed the action first.
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  #4  
Old 10-26-2017, 11:00 PM
coyotespotter coyotespotter is offline
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If you have a 10 thousandth caliper, measure a few of each bullet and see if the Nosler are smaller. Could be you have a tight bore, I always seem to find Nosler running small for caliber. Did you seat for the same jump for all the bullets?
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  #5  
Old 10-29-2017, 12:53 PM
rhouser rhouser is offline
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I have a working load for my CZ-527 V with CFE BLK and Berger 25gr bullet.

I load 11.7 gr of CFE-BLK, Hornady Brass, FED 205M primer, 25gr Berger FB Varmint. Seated to OAL 1.479 using Hornady .17 cal comparator bushing (about 1.724" on caliper).

10 shot .475" (edge to edge, no adjustment for the caliber) ragged hole group @ 100 yards indoor (no wind). Because of the missing center I cannot judge how many clovers or one hole shots there were. I ended up just aiming at the hole because my target dot was gone.

Chrony Stats: MIN: 3241, MAX: 3273, AVG: 3261, SD: 13, ES: 32

No pressure signs. Flattening of primers was equivalent to the Factory 25 gr Hornady HP's that I used for a base line.

I am very happy with this. I need to load this again and shoot a few 3 - 5 shot groups just to see how fine it might pull.

v/r rch

Last edited by rhouser; 10-29-2017 at 06:39 PM.
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  #6  
Old 11-07-2017, 06:42 PM
southernman southernman is offline
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I shoot hornardy hollow points, with
11.2g of blackout gives me 3187 fps in a 20" CZ Varmint, win primers and hornardy brass, 25 hp.
11.5 gr blackout with 20-vmax is 3700,
The Bergers are quite a bit more expensive, for me to source,
Great speed with blackout, picked up 250-300 over N120, and 4198
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  #7  
Old 11-08-2017, 06:33 AM
PGW Steve PGW Steve is offline
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Thank you for the comprehensive report. I picked up some BLK and want to try it in my 17 Hornet and .221 Fireball.
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  #8  
Old 11-08-2017, 08:55 AM
rhouser rhouser is offline
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Southernman, did you mean 12.5gr CFE BLK for 3700 with the 20-vmax?

I am getting 3685 AVG VEL for 5 shot sets using both the tipped and hp 20gr NOSLER Varmageddon using 12.8gr CFE BLK, FED 205M, Hornady Brass, with a COL 1.494 at the ogive measured with the .17 hornady comparator insert.

I am getting 3639 AVG VEL for 5 shot sets with the same 12.8gr charge using MidSouth Nighmare's loaded to COL 1.465 at the ogive with the same comparator insert.

I am going to toss out the following observation as well on CFE BLK. I am seeing NO copper in my barrel when cleaning. I am using "Wipe-Out" to clean and I am getting 0 blue on even my first patch. I am still cleaning after every 25 - 30 shots, but NO COPPER seems very odd. The "Copper Fouling Eraser" powder may actually work. Anybody else seeing this?

rch

Last edited by rhouser; 11-08-2017 at 02:33 PM.
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  #9  
Old 11-09-2017, 07:40 AM
southernman southernman is offline
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Rhouser, you are correct, it is 12.5 gr blackout with a 20gr v-max. Wsr primer.
I got 12g -3470fps x5 shots avg
12.3 -3566fps x5 shots avg
12.5 -3700fps x5 shots avg
12.6- 3738fps x5 shots
12-8-3779fps x3 shots.
Shot in a CZ American and a mangospeed crony.
My CZ varmint 20" barrel is with in 25fps of the American. Very good performance, from such a small case.
Hard on rabbits, got head shot them, or no eating left.
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  #10  
Old 11-09-2017, 11:43 AM
rhouser rhouser is offline
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Quote:
Originally Posted by southernman View Post
Hard on rabbits, got head shot them, or no eating left.
Southernman, I agree on not blowing up my food. There is not much of a selection of non-explosive bullets out there.

At the risk of being flamed, I just received my NOE molds in .172 26gr GC and 32gr PB to see what I can see. I don't want to rebuild a .22lr but maybe I can find something to carry for that special "dinner shot" that sometimes appears.

Thanks for your follow-up on the CFE BLK. I was going to try the N-120 but the CFE is working so well, I may just stay here.

Are you finding that their APPEARS to be a minimum of copper fouling with this powder?

thanks to all
rch
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