Have the same issue coming up for my 6CM. The article in the 2018 Hodgdon manual has data that indicates that the best choice depends on the powder, and/or your use. Superformance seems like a great powder for hunting loads, and heavy target bullets and LRs seemed to work best there, but the examples are very limited. Both types gave very good results in certain case. I figure on getting some of both types eventually.
Alpha has a larger flash hole in the small riifle primer brass as well, just to complicate things.
Good to know, might be the best of both worlds. Anybody burning cases full of RL26 with small primers? I don't have any problems with 42gr of RL17 in the 6.5x47L.
When I initially got Lapua brass for my small rifle primers I was nervous about cold weather ignition especially. But the coldest I tested that brass with small rifle primers previous to a couple weeks ago was about zero. Well I got the chance to shoot at -49 degrees F (was -53 when I woke up but I had to get the fire roaring first) with a -6500' DA and went 2 for 2 at just over 700 yards on a 1.5 MOA gong with no issues and velocity obviously didn't suck too bad even in those temps. The Bushnell scope while it dialed just fine, did earn itself a trip back to the Bushnell HQ for repair after that shooting sequence though.
Anyways, I guess you could say I am no long worried about ignition issues if the CCI 450s can light off 46+ grains of powder at -50F
Were the rifle and ammo at ambient temperature, or had they just come from inside?
I had a number of ignition issues with Small Rifle Primers in the 6.5x47... even some outright hang-fires. When you pull the trigger.... the gun goes click.............. BOOM!... it’s a bit unnerving. The issues only occurred when it was below about 20 degrees.... but it was bad when it was below zero.
There’s no way I’d go with SR primers if I intended to hunt with the rifle.
You better pray to the God of Skinny Punks that this wind doesn't pick up......
The May issue of Shooting Times I pulled out of my mailbox this morning has a column by Lane Pearce addressing this exact issue. Three industry authorities said that the small primers can create a dangerous situation under some circumstances. Based on that, I think I'll pass, since my use is for hunting.
Not arguing the point one way or other, just repeating what was published.
Small can handle higher pressure without destroying the brass.
I am guessing primer pockets loosing up sooner with large primer brass ? A friend of mine who is a Guru rifle maker suggested that I take all Creedmoor brass and check every one small or large primer and enlarge the flash hole if the decapping stem even touches the sides not just uniform. Watching this guy shoot 1/2" wide strips of AR 500 with a 300 win mag at 300 yards with out missing I listen!
if you want change you have to put in your 2 cents, you can't just sit on the sidelines and whine
I had a number of ignition issues with Small Rifle Primers in the 6.5x47... even some outright hang-fires. When you pull the trigger.... the gun goes click.............. BOOM!... it’s a bit unnerving. The issues only occurred when it was below about 20 degrees.... but it was bad when it was below zero.
There’s no way I’d go with SR primers if I intended to hunt with the rifle.
Which powder?
Screw you! I'm voting for Trump again!
Ecc 10:2 The heart of the wise inclines to the right, but that of a fool to the 24HCF.
Small can handle higher pressure without destroying the brass.
I am guessing primer pockets loosing up sooner with large primer brass ? A friend of mine who is a Guru rifle maker suggested that I take all Creedmoor brass and check every one small or large primer and enlarge the flash hole if the decapping stem even touches the sides not just uniform. Watching this guy shoot 1/2" wide strips of AR 500 with a 300 win mag at 300 yards with out missing I listen!
Yeah, the thicker ring of brass on the case head surrounding the primer resists expansion more than the narrower ring around a LRP.
I had a number of ignition issues with Small Rifle Primers in the 6.5x47... even some outright hang-fires. When you pull the trigger.... the gun goes click.............. BOOM!... it’s a bit unnerving. The issues only occurred when it was below about 20 degrees.... but it was bad when it was below zero.
There’s no way I’d go with SR primers if I intended to hunt with the rifle.
Smart man.....
Especially in very cold, subzero temps. Been there, done that and never again.
I already have about 500 cases of hornady so just gonna swap over to that. Likely just gonna rock the lapua till I get a miss fire or hang fire as it seems it’ll happen sooner or later given I am 700+ into it so on borrowed time. When that happens likely next week or so off to pull Bullets and powder and swap over to hornady.
I was testing two different suppressors yesterday, to see if There was a POI difference, swapping back and forth.
This is Large Rifle Primer Alpha brass. This was the best five shots, but all other 5 shot groups(6 total)were well under .5" with two different bullet weights and powder charges.
My point is, pretty good accuracy, really good dependability...I hunt a lot in subzero temps, and need to trust my equipment.
Jordan has put a few rounds through this rifle....;)
David Tubb had this to say about why he chose to use brass with LR primers in the 6XC, whether reformed .22-250 or factory Norma 6XC brass: “A detailed study of large and small rifle primers showed that large rifle primers worked best when the propellant charge exceeds 35 grains as is the case with the 6XC.”
However, he didn't mention who did the study, and a Google search didn't find it. But Tubb knows his stuff.
“Montana seems to me to be what a small boy would think Texas is like from hearing Texans.” John Steinbeck
Hmmm maybe I will just ditch the 6.5 all together and keep my 22-250 with LR primers in lapua brass. Seems the like 41 grains of powder for a 210 to light of is but a light snack. Just glad I have been lucky thus far with no hang fires.
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