KentM
Member
- Joined
- Jan 2, 2021
- Messages
- 60
I just ran across two primer - load mismatches that I wasn't previously aware of. Perhaps the community might post any other not-so-obvious mis-matches you know about.
- Remington #6 1/2 SR primers are not recommended for .223 or 5.56. They say to use their #7 1/2 Bench Rest SR primers for that caliber. (Small print on the Midsouth and Grafs web sites)
- Remington #5 1/2 SP primers are listed in Midsouth and Grafs as Magnum, but Remington says they are not. The box doesn't say Magnum either. But they do have a heavier cup than their #1 1/2 SP primers. The lighter #1 1/2 are not recommended for heavier loads such as .357 Mag and .40 S&W, while the #5 1/2 can be used in any normal SP application. Either is OK for 9mm. (So why do they make the #1 1/2 if the #5 1/2 is more versatile?)
Any others you know of?
- Remington #6 1/2 SR primers are not recommended for .223 or 5.56. They say to use their #7 1/2 Bench Rest SR primers for that caliber. (Small print on the Midsouth and Grafs web sites)
- Remington #5 1/2 SP primers are listed in Midsouth and Grafs as Magnum, but Remington says they are not. The box doesn't say Magnum either. But they do have a heavier cup than their #1 1/2 SP primers. The lighter #1 1/2 are not recommended for heavier loads such as .357 Mag and .40 S&W, while the #5 1/2 can be used in any normal SP application. Either is OK for 9mm. (So why do they make the #1 1/2 if the #5 1/2 is more versatile?)
Any others you know of?
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