Small rifle primers in 6.5 CM

[bowrunner81]

There are plenty on Federal SR match primers available around me, and I am going to use them in a 6.5 creedmoor. I have read there is hesitation taking them down to low temps. My question is has anyone tested this down to some lower temps. Say 10 degrees. I have some large rifle primers I can use for hunting and take the small rifle primers out for practice if low temps are an issue with small rifle primers.

Thanks!

 

[deerhunter628]

I use Lapua 6.5 CM small primer brass down to 10° and colder and have not had any problems.

 

[InkedElkSlayer]

See the thread below. I’ve left a clip out overnight at around 20 below and then shot it. It is common and I routinely hunt around +/-0.

C

Post in thread '6.5 Creed small primers'

Feb 20, 2025

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.

• coleman

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[bowrunner81]

Thanks for the input. I’m going to be using H4350 with this, but the regular small rifle primers and not the magnum small rifle primers. I picked some up so I will give it a go. Maybe kill do some testing with it and report back.

And thanks for the thread link. I’ll read through that!

 

[wind gypsy]

With H4350 you're probably good. Seems easy enough to avoid any question and use LRP for hunting so that's what I do but if a guy doesn't have LRP brass i wouldn't be too worried about it. IIRC 205s are pretty high on SRP spectrum for how much spark they put out.

 

[bowrunner81]

With H4350 you're probably good. Seems easy enough to avoid any question and use LRP for hunting so that's what I do but if a guy doesn't have LRP brass i wouldn't be too worried about it. IIRC 205s are pretty high on SRP spectrum for how much spark they put out.

Thanks Wind Gypsy. How do they compare to CCI450s spark wise? Any advantage to CCI450 over Fed 205s?