6.5 Caliber choice

Maple57 said:
When you say you didn't have problems in the cold... Did you by any chance chronograph the loads at different temperatures, or did you just not notice if there was a variance based upon group sizes? Which you probably wouldn't if shooting only at 100 yards... even under 300 for that matter.

I was developing my load for 1000 yards in an effort to hold the 1/2 MOA V Bull, but early load development was being done in January.
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I did not chronograph the loads as I finished load development a few years ago. I shoot 300 meters. Did not notice anything different at -10C than I see at +35C
 
MartyK2500 said:
That is something I will have to research small primers vs large primers, may affect my decision as I shoot all year round.
Shot a few times with my 308 at -30C, it usually shoots at 2700fps at 70F, and was impressed to see it wouldn't lose more than 10FPS and wouldn't lose ignition in extreme cold.
When I got my 308 Lots of folks we're steering me towards small primers, I went with large primed lapua brass as was in stock and cheaper at the time.

That lot of brass is now 8x fired, lauching 175 SMKs 2700fps with 42.7gn of Varget, and primer pockets are still tight and brass has no pressure signs.

I know the answers are in this forum when i'll search,
I am curious about the benefit vs problems of LP vs SP.
Far from being against using small primers, I know little about it that's all.
But cold weather capabilities are important to me, as I do not consider myself to be a warm weather/sunny weather shooter.
I actually like to see how conditions can kick my ass, see my 1/2 moa rig go 1+moa cause I can't feel my fingers, you see the human factor kick in.
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For the 308, I will give you a hint... run SR in the heat of summer... LR when temps dip below 10C. I run Varget under my bullets.

If you are shooting paper and counting every shot, you will see the difference as distances reach out....

Jerry
 
I'll add to the small primer debate. I have never had a problem down to -20C with CCI 450 and H4350 in my 6.5X47. Shoot steel at -15 -20 checking drops, then head south to Louisiana, Mississippi and Texas for deer. Never had a primer issue or powder problem. Yes my drops are not the same at sea level as in Manitoba but adjust accordingly.
 
Nice video Manitou!

I've run into ignition problems in my 6mm CM with SRP brass. I'd say mostly due to load density, but I did a bit of shooting this winter at/around -20 c, and I had more problems on the cold days. I have two loads, one for shooting at short range, and one for long. I didn't notice any problems with 40.9 gr of H4350, but my light load, 36.6 gr H4350 was pretty unreliable even on warmer days. My first attempt at correcting it was Magnum Primers. They had no apparent effect on the fast load, and didn't seem to do much for the hang/misfires with the slow. Regardless I intend to continue using Magnum Primers with my SRP brass. I had some 6.5 CM LRP brass, and 20 6mm CM LRP, loaded up 25 at 36.6, problem solved. I have another 100 pcs of LRP brass on the way.
 
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redshooter, what magnum primers are you using? This is concerning to me as I shoot as much as possible in winters as that's when I have time. I run high load density with H4350 and CCI 450's in both my x47's.
 
beeman2 said:
redshooter, what magnum primers are you using? This is concerning to me as I shoot as much as possible in winters as that's when I have time. I run high load density with H4350 and CCI 450's in both my x47's.
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CCI 450's, when I say no apparent effect I mean no change, same point of aim, no pressure signs, still shooting tight. I have yet to try this combo in warm weather though, but I don't expect much difference. My scope is riding my AR for the moment so it'll be a bit before I know for sure if it needs tweaking.
 
Mystic Precision said:
For the 308, I will give you a hint... run SR in the heat of summer... LR when temps dip below 10C. I run Varget under my bullets.

If you are shooting paper and counting every shot, you will see the difference as distances reach out....

Jerry
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Running a 308 in both small primers and large primers seem like some management to some extent.
Also the fact that i'm sitting on 600 308 LP brass makes me want to stick to it.

So the way I see this right now,
SP are more accurate but suck in the cold,
LP are less accurate but are good to go all year round.

I could run 2 rifles in 2 calibers.
My existing 308 with LP, from October to May, and in the summer in Petawawa where they ban 6.5,
And a new 6.5x47 SP for summertime competition and fun shoots.
 
outside of the cold, I have found no accuracy improvement in SR primered brass vs LRP.... believe me, I have tested a bunch.

It is more to do with load tuning when shooting in very hot weather... over 30C. Here I am looking at better vertical on the V bull at 1000yds. Real small changes.

With two rifles, the size of primer helps me know which rifle the brass belongs to....

If you have LRP brass, just run with it... it will not be the limiting factor to hitting the target.

Jerry
 
Perfect, I always wanted a 6.5, so may as well get it into SP.
As for my 308, it will stay as it is with LP.

Just purchased the rifle, Savage 110 Tactical, the new models.
Decided to go Savage instead of Bighorn Origin, figured I got spare bolt, and bolt parts.
Also tried it at Barney's Petawawa match last week-end and the 12 round mags feed very well even filled up to 12, with this in mind I know savage will feed ammo to an IBI pipe for cheap.
Will be a slow build for the remainder of the year, as I don't want this project choking my actual shooting.
But will contact you once I start getting chassis and parts for it.
 
MartyK2500 said:
Perfect, I always wanted a 6.5, so may as well get it into SP.
As for my 308, it will stay as it is with LP.

Just purchased the rifle, Savage 110 Tactical, the new models.
Decided to go Savage instead of Bighorn Origin, figured I got spare bolt, and bolt parts.
Also tried it at Barney's Petawawa match last week-end and the 12 round mags feed very well even filled up to 12, with this in mind I know savage will feed ammo to an IBI pipe for cheap.
Will be a slow build for the remainder of the year, as I don't want this project choking my actual shooting.
But will contact you once I start getting chassis and parts for it.
Click to expand...

All of the popular 6.5s shoot stupidly well. 6.5X47L or 6.5 CM is dead easy tuning.... so eenie meenie.

Let me know what I can help with. Thanks

Jerry
 
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