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Originally Posted by doubleDs55
Originally Posted by Mule Deer
Originally Posted by doubleDs55
I have been using REM 7 1/2's ever since I bought One of the first .17 cal Rem Model 700's rifles.
They were made for the .17 Rem because of the pressure.


Actually, as I mentioned in an earlier post, 7-1/2s were primarily introduced for the .221 Fireball, which appeared years before the .17 Remington. But same deal: Thicker cup than the 6-1/2s to resist higher pressures.

No no MD I don't think so, the 17 rem was introduced by Remington in 1971, the 221 fireball was not introduced until 2007.
I've read many times the 7 1/2 was created because of the .17 rem. and the fact that 6 1/2's were not going to cut it. In 71 I was interested in a .17 as soon as I heard about it. Remington said no small rifle primer at the time were recommended for the 17 rem except the 7 1/2.
Today there is some other primers that could fit the bill, not so then.


That is way off. Try 1963.

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Originally Posted by doubleDs55
No no MD I don't think so, the 17 rem was introduced by Remington in 1971, the 221 fireball was not introduced until 2007.


The 221 Fireball was introduced in 1963 in the XP100. Beginning In 2002, it was chambered in both the Model 7 and the 700.

Good shootin'. -Al


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17 Fireball was introduced in 2007 I believe.


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Yes....Al Angerman's article was a follow up to some of the work done by Rick Hornbeck and Creighton Audette. I believe the Angerman article was in '93

German Salazar trod similar ground more recently.

IIRC, he also included spark photography (as did Audette) or long exposure photography (i forget which) to image the prime flame front.

These days you’ll ha em to be motivated to find his work as he pulled much of it from online outlets.

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Originally Posted by Son_of_the_Gael
17 Fireball was introduced in 2007 I believe.


Yep.


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Then the 221 Fireball came out a little later than the 222 Remington Magnum. The 222 Mag came out about 1958 --- I believe.

So, did the 7 1/2 Magnum primer come out in 1958 or 1963? If it came out in 1958, like I had in the back of my mind, it would make sense that Remington would have called it the 7 1/2 Magnum - to match the higher pressure of the 222 Magnum. Perhaps they changed the name to 7 1/2 Bench Rest when the 221 came out in 1963, IDK?

Just throwing it out there as I was wet behind the ears and very early into center fires in 1958. The center fires I had were the 7.92x57 and later the 6mm.


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Originally Posted by mathman
Originally Posted by doubleDs55
Originally Posted by Mule Deer
Originally Posted by doubleDs55
I have been using REM 7 1/2's ever since I bought One of the first .17 cal Rem Model 700's rifles.
They were made for the .17 Rem because of the pressure.


Actually, as I mentioned in an earlier post, 7-1/2s were primarily introduced for the .221 Fireball, which appeared years before the .17 Remington. But same deal: Thicker cup than the 6-1/2s to resist higher pressures.

No no MD I don't think so, the 17 rem was introduced by Remington in 1971, the 221 fireball was not introduced until 2007.
I've read many times the 7 1/2 was created because of the .17 rem. and the fact that 6 1/2's were not going to cut it. In 71 I was interested in a .17 as soon as I heard about it. Remington said no small rifle primer at the time were recommended for the 17 rem except the 7 1/2.
Today there is some other primers that could fit the bill, not so then.


That is way off. Try 1963.

Wrong, the 17 Mach IV was. 62

Last edited by doubleDs55; 07/22/21.

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Originally Posted by Al_Nyhus
Originally Posted by doubleDs55
No no MD I don't think so, the 17 rem was introduced by Remington in 1971, the 221 fireball was not introduced until 2007.


The 221 Fireball was introduced in 1963 in the XP100. Beginning In 2002, it was chambered in both the Model 7 and the 700.

Good shootin'. -Al

Well not quite, yer over 40yrs early ,Ah whatever ! LOL The Rem Model 700 was in 62. The Model 7 was in 83.


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doubleDs55,

Good to know we have you on the Campfire to straighten out history.


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MD you are SO patient 😀


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Originally Posted by doubleDs55
Well not quite, yer over 40yrs early ,Ah whatever ! LOL The Rem Model 700 was in 62. The Model 7 was in 83.


Not talking about when the models were introduced. Rather, when they became available in 221 Fireball.


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According to Ken Waters' Pet Loads 1968, Factory 222 Remingtons were loaded with 6.5's, when piercing in both 222 and 222 Magnum factory ammunition surfaced and was eventually replaced in both cartridges (and the 223) around 1966. Ken still used and preferred 6 1/2s in both cartridges, probably because he was never heavy on the powder handle.

In his 1977 write up of the 222, Federal and CCI had introduced "Bench Rest" primers, both of which increased velocities markedly over the Rem 7.5.

Mike Venturino did a primer article for Handloader in 1979 (all SRP) and his box was the "Bench Rest" primers, 7 1/2. At that time, only CCI had a "magnum" small rifle primer of domestic make. - Wolfe Varmint and Small Game Rifles and Cartridges

Both men I would count as having a habit of seeking facts, or beyond the scope of doubleDs.....in the case of Venturino's article, he posts a picture of every box of primers used in his test.

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Originally Posted by ChrisF

German Salazar trod similar ground more recently.

IIRC, he also included spark photography (as did Audette) or long exposure photography (i forget which) to image the prime flame front.

These days you’ll ha em to be motivated to find his work as he pulled much of it from online outlets.


I've got most of German's work from The Rifleman's Journal saved. He was thorough and put a lot of effort into his testing and documentation. -Al


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Originally Posted by doubleDs55
Originally Posted by Al_Nyhus
Originally Posted by doubleDs55
No no MD I don't think so, the 17 rem was introduced by Remington in 1971, the 221 fireball was not introduced until 2007.


The 221 Fireball was introduced in 1963 in the XP100. Beginning In 2002, it was chambered in both the Model 7 and the 700.

Good shootin'. -Al

Well not quite, yer over 40yrs early ,Ah whatever ! LOL The Rem Model 700 was in 62. The Model 7 was in 83.



You and Pete53 related ?

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Originally Posted by shootAI
Originally Posted by doubleDs55
Originally Posted by Al_Nyhus
Originally Posted by doubleDs55
No no MD I don't think so, the 17 rem was introduced by Remington in 1971, the 221 fireball was not introduced until 2007.


The 221 Fireball was introduced in 1963 in the XP100. Beginning In 2002, it was chambered in both the Model 7 and the 700.

Good shootin'. -Al

Well not quite, yer over 40yrs early ,Ah whatever ! LOL The Rem Model 700 was in 62. The Model 7 was in 83.



You and Pete53 related ?

I'll shut da hell up

Last edited by doubleDs55; 07/22/21.

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Originally Posted by Mule Deer
doubleDs55,

Good to know we have you on the Campfire to straighten out history.

delete my bad

Last edited by doubleDs55; 07/22/21.

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You’re gonna have to live with it.


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Originally Posted by mathman
Originally Posted by Joe
I have a few left in a box that was purchased circa 1983. Labeled Benchrest and they are indeed copper color.


Forgive me for being particular, but I'd like to be clear on what we're talking about.

Pinkish like copper:

[Linked Image from si-interactive.s3.amazonaws.com]

Or "copper color" like brass:

[Linked Image from flecktarn.co.uk]


Yep, pink like copper, not yellow like brass.


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I don`t often read every post in a thread,but this one has all kinds of information.Even an old dog can learn stuff here.


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