6.5 Creed small primers

[khuber84]

I wish they would publish their results. I'd like to see how in depth it was. I find it very interesting.

There's a thread over on accurate shooter where a couple guys tested various flash hole sizes and said that 0.060 was good, 0.070 was bad, and 0.080 was good. Give me a break. If the results were really different and not just noise, I'm sure it's just that particular load.

I can't see it making a ton of difference except for the extreme scenarios: very thick case head (long flash channel), very low case fill, extremely cold temp, etc.

I'm sure there sample size was rather limited, as all the groups on accurate shooter are. But......you cannot argue with 10 shot 1/3 to 1/4 moa groups at 1k yards on paper. I feel those guys are likely better rifle tuners and reloaders than true marksman. I know some benchrest and f class guys, they even agreed with my opinion.

 

[Gorp2007]

I’ll throw in an update now that I have a chronograph.

I switched from mixed LRP (mostly Hornady) to Alpha SRP and didn’t notice any change in group size at 100 yards, but I lost about 100 fps with the same reloading recipe. Full load data is below. Same batch of bullets and powder, loaded within 24 hours of each other.

140gr ELD-M
40.0gr H4350
2.740” COAL

LRP - 2599.1 fps
SRP - 2494.0 fps

The LRP group was only 5 shots and I’ll keep collecting data on those, but the SRP loads are giving me single digit SDs over 10 shot groups so I don’t plan on going back any time soon.

 

[HighUintas]

I am getting about 2530fps with my 21.75" Tikka 6.5cm with CCI450, 140 match burners, starline SRP, and 40gr h4350.

Sounds similar to yours.

 

[mtnbound]

Here is a good little experiment from the guys over at Vortex testing small and large primers and temperature effects.

 

[S.Clancy]

A little bit of a zombie thread, but I've been reloading Peterson SRP brass for 6.5 Creed. The recent weather here in MT has allowed me to shoot some rounds in cold weather to test. The particulars.

Weather: Temps from 0F (or slightly below) to 12F. Snowing and generally shitty

Load: 6.5 Creed Peterson SRP brass
CCI 400 Primer
40-43gr of H4350 (been testing some 129s, 130s and 140s)
COAL ~2.810"

Rifle: Kimber Hunter 6.5 Creedmoor

Results:

No hang fires or other ignition performance issues over 120 rounds. Rounds were stored in the truck overnight and this gun was the last to be shot, so they were cold for sure.

Groups were, in general, 1.5 - 2 MOA. 140s grouped the best, then 130s, then 129s.

ES were 30-40 based on 10-15 round groups., not that it matters.

Speeds: 2850 with 129s
2830 with 130 ELDM
2725 with 140 ELDM

In short, gonna keep shooting these CCI 400s

 

[SloppyJ]

I shot over 1200 6 creed rounds last year with a very similar if not identical load to typical 6.5 creed loadings. Using CCI 450s I did not have a single hang fire or issue.

Most of it was in decent weather at matches but there were quite a few at colder temps. The coldest being in the teens with a 10mph wind.

The case head has more material and its thought you can run them hard and get more life out of them before the primer pockets loosen up on you.

 

[freddyG]

When I use srp brass instead of lrp, it takes between .5-1.0 grains extra powder to get back the velocity loss of srp.

 

[coleman]

Ball powders and SRP do not play well in colder temps. A buddy had issues with superformance and srp and I experienced some delayed ignition with staball 6.5 in -16 C. Both with alpha srp brass and cci 450’s. I haven’t noticed any issues with H4350 in colder temps so far, but haven’t shot it in the real cold yet.

 

[MBounds69]

I just did load development for a 7mm SAW with a 19” 1in 8” Carbon Six Barrel.
My Load is :
Alpha Brass, small primer
CCI BR4
42G Varget
162 G EldM
COL 2.85
2735 FPS Suppressed