Primer difference

[CaptainMal]

Looks like about the same point of impact. One has more vertical than the other but conditions may have changed during the test both in atmosphere and barrel temperature. That third one only has three shots. Take your best three from the other groups and just use them.

To me there may be a difference. Key word is "may".

 

[gambleone]

Looks like about the same point of impact. One has more vertical than the other but conditions may have changed during the test both in atmosphere and barrel temperature. That third one only has three shots. Take your best three from the other groups and just use them.

To me there may be a difference. Key word is "may".

the third one is 5 shot with br-2 primer

 

[Shaggy357]

Primers and Powder go together like mixed drinks, or like chips and dips. There are lots of chips, and lots of dips, but you likely have your favorite combo.

Primers have different burn rates the same as powders. Some combos go together better than others.

Buddy and I have DW Revolvers with consecutive serial numbers. They are alike as can be. One day we were developing loads and had come to the range together. When we chronographed the loads they were within a few feet in velocity. Good SD and spread. I was using Rem 7 1/2 primers and he was using WSR primers. Same powder, but he was using 2.0 grains more than I. Different combo with similar results.

I have a 7TCU in a Remington XP action. Used WW748 for years. Was getting low on supply so opted to use a different powder as I couldnt find any 748. Worked up a load with H335. With my standard Rem 7 1/2 primer I was shooting 5 shots within an inch at 100, but the gun was capable of doing better. When I got home I loaded up same load, but tried 4 different primers. Like the original post, one primer stood out, and my group went from @ 1.0" to sub .5". H335 in that gun, does better with the WSR primer.

If you are working up a load, primer and powder selections are important. You have to use the right combo.

Yes, I have lots of various primer brands, so I can match all the different combos with powder.

Good luck. The search is half the fun.

Steve

 

[savagedasher]

Primers and Powder go together like mixed drinks, or like chips and dips. There are lots of chips, and lots of dips, but you likely have your favorite combo.

Primers have different burn rates the same as powders. Some combos go together better than others.

Buddy and I have DW Revolvers with consecutive serial numbers. They are alike as can be. One day we were developing loads and had come to the range together. When we chronographed the loads they were within a few feet in velocity. Good SD and spread. I was using Rem 7 1/2 primers and he was using WSR primers. Same powder, but he was using 2.0 grains more than I. Different combo with similar results.

I have a 7TCU in a Remington XP action. Used WW748 for years. Was getting low on supply so opted to use a different powder as I couldnt find any 748. Worked up a load with H335. With my standard Rem 7 1/2 primer I was shooting 5 shots within an inch at 100, but the gun was capable of doing better. When I got home I loaded up same load, but tried 4 different primers. Like the original post, one primer stood out, and my group went from @ 1.0" to sub .5". H335 in that gun, does better with the WSR primer.

If you are working up a load, primer and powder selections are important. You have to use the right combo.

Yes, I have lots of various primer brands, so I can match all the different combos with powder.

Good luck. The search is half the fun.

Steve

Primers are the same as spark plugs are to a motor
Spark plugs are rated from hot to cold .
Primers burn at different levels also . Hot to cold.
There is no one fix all primer or spark plug . 87 octane takes different spark plugs then 93 octane .
Primers will be no different with different powders and amout of powder .
Primers should be picked with Es differences and how they shoot. Larry

 

[kountryboy2]

87 octane takes different spark plugs then 93 octane .
Larry

Larry,I don't know who is more full of shit,its a close tie between you and fgulley.

 

[savagedasher]

Larry,I don't know who is more full of shit,its a close tie between you and fgulley.

Thanks I see you have no idea what involved with a internally combustion engine Larry

 

[kountryboy2]

Thanks I see you have no idea what involved with a internally combustion engine Larry

Well Larry,my engines one the 1997 ump national championship in open wheeled modified. Let's see your list of engine building/designing skills.

 

[savagedasher]

Well Larry,my engines one the 1997 ump national championship in open wheeled modified. Let's see your list of engine building/designing skills.

Little 500 kiss championship for all pro Florida pro touring Can't guess how many tracks championship in Florida Larry

 

[Killick]

Although as a 1000yd benchrest shooter I have not personally loaded any yet.
I have been hearing ALOT of good things about the wolf primers and low es.
A fellow competitor shoot a 7wsm and he says they out performed all the top names.
Gotta try them for myself and see if they work better than my 210m and cci br2.

I have always found the Wolf/Russian/Tula primers out perform any other brand of primer regardless of cartridge. German Salazar did a high speed photographic test of several brands of primers and you can visibly see the difference between the Russian and every other brand. There is noticeably less flash with the Russians. I don't know if that means it gives a more consistent ignition or what but it's quite obvious.
I recently switched from BR2 primers for my .284 Win. F-Open rifle and the elevation difference when I shot them side by side with the BR2's during a match was dramatic. I am a believer.

 

[K22]

I shoot a lot of 223 ( 7 bolt rifles) and the two primers that performed best for me are Federal 205M and Remington 7 1/2.

 

[Steve Ladino]

Wanted to share what I found using different primers. I have a 22-250 with a new Krieger barrel 1-12 tw with a Mauser-98. All bullets were Nosler 55gr BK Spitzer. Powder, IMR4064 33.2 gr. Lapua brass with necks skimmed. All shot at 200 yds off bench with no wind. Never thought I would see this much difference in the 3 different types primers I used. 1st group-WLR, 2nd group-cci-200, 3rd group-BR-2. The first 3 went in one ragged hole, the 4th I think was my front bag (shot low) & 5th went back into group.

Thanks for sharing what you have found. Irregardless of what the ( Know it all nasayers useless negative commentary input expresses ) there are many many of us who believe our fellow shooters and come to this forum to learn and enjoy others revelations, keep up the good work !

 

[BoydAllen]

With all other factors being equal, different primers are very likely to give different velocities and pressures. For this reason, I think that all primer tests done with the same powder charge and seating depth, at short range (100-200 yd.) where ES is not really a factor, looking solely at accuracy, are entirely flawed. In order to properly test primers in a situation like this, a proper load workup would have to be done with each. On the other hand, if one is looking at ES only, as a preliminary step before doing a final load workup, as one might for shooting longer ranges then there might be some utility in this sort of test, but it would be the chronograph results that would be analyzed rather than the targets. Tune is closely related to velocity and pressure, and when a component in a load is changed these are likely to change, and with that tune.

 

[Laurie]

With all other factors being equal, that different primers are very likely to give different velocities and pressures. For this reason, I think that all primer tests done with the same powder charge and seating depth, at short range (100-200 yd.) where ES is not really a factor, looking solely at accuracy, are entirely flawed. In order to properly test primers in a situation like this, a proper load workup would have to be done with each. On the other hand, if one is looking at ES only, as a preliminary step before doing a final load workup, as one might for shooting longer ranges then there might be some utility in this sort of test, but it would be the chronograph results that would be analyzed rather than the targets. Tune is closely related to velocity and pressure, and when a component in a load is changed these are likely to change, and with that tune.

That's the approach (chronograph results) that I took with my LR primer tests in 308 Win ... report and link to the article:

http://bulletin.accurateshooter.com/?s=laurie+holland+primer+tests&submit=Search

Groups are meaningless, although I did report them as that's what people expect. In the LR case, as can be seen, in this cartridge and load combination at any rate, there is a very large variation indeed across the range of available primers in averages (which reflects pressures) and ES/SD values (reflecting charge burn consistency).

I've just (as of last Thursday) finished a repeat of the exercise again using 308 Win for 15 x SR primers in Lapua Palma brass and will write this up in due course.

FWIW, in 308 at any rate using Viht N150, the results spread was very much smaller with SR models than LR and there is much less difference between standard models and magnum/BR types' performance.

 

[Killick]

I recently switched from BR2 primers [to Wolf LR] for my .284 Win. F-Open rifle and the elevation difference when I shot them side by side with the BR2's during a match was dramatic. I am a believer.

This was at a 1,000 yard match. When push comes to shove if a certain load combination proves itself superior in match conditions than another combo that has better chrono, short range numbers it would be foolish to trust the latter.

 

[gambleone]

I've seen bolt faces in the lathe being cleaned up. Sometimes, there are high-spots around the ejector hole that causes this, especially with AR-15 bolt faces but with Remington bolt faces too.

Is there a way to clean up the bolt face without putting it in a lathe?

 

[mudduck]

Primers are the same as spark plugs are to a motor
Spark plugs are rated from hot to cold .
Primers burn at different levels also . Hot to cold.
There is no one fix all primer or spark plug . 87 octane takes different spark plugs then 93 octane .
Primers will be no different with different powders and amout of powder .
Primers should be picked with Es differences and how they shoot. Larry