Ringing the chamber.......................
Gunny, Marsh and all:
I too am relatively new to BPCR (3 yrs) and up to now have accepted the "common knowledge" that the bullet must be placed firmly on the charge to eliminate all air space. Why?...cuz I was told to by guys who knew what they were doing and most "how to" manuals including the BPC Reloading Primer (P.22) warn against an air space. I have to admit that the schutzen breach seating practices have caused me to question the rule. Now if guys like Garbe are saying it is OK...........I'd like to hear a little more.
The load I have working in my 45.70 is faster than I would like, but whenever I back off on the compression, the group opens up. An air space with less powder but same compression may be the answer, but I don't want to wreck a good rifle.
I have shot quite a few reduced smokeless loads in 30.30 and 6.5x55 some with filler, most without - so far no problems. Rule of thumb has been - use fast powder.
I have not read any of the articles that suggest leaving an airspace. Does this apply to all types of BP? or is it only faster brands in small graulation? Are they still compressing the powder?
I'd appreciate hearing from anyone who has first hand experience with leaving airspace.
......jBrent
Gunny, Marsh and all:
I too am relatively new to BPCR (3 yrs) and up to now have accepted the "common knowledge" that the bullet must be placed firmly on the charge to eliminate all air space. Why?...cuz I was told to by guys who knew what they were doing and most "how to" manuals including the BPC Reloading Primer (P.22) warn against an air space. I have to admit that the schutzen breach seating practices have caused me to question the rule. Now if guys like Garbe are saying it is OK...........I'd like to hear a little more.
The load I have working in my 45.70 is faster than I would like, but whenever I back off on the compression, the group opens up. An air space with less powder but same compression may be the answer, but I don't want to wreck a good rifle.
I have shot quite a few reduced smokeless loads in 30.30 and 6.5x55 some with filler, most without - so far no problems. Rule of thumb has been - use fast powder.
I have not read any of the articles that suggest leaving an airspace. Does this apply to all types of BP? or is it only faster brands in small graulation? Are they still compressing the powder?
I'd appreciate hearing from anyone who has first hand experience with leaving airspace.
......jBrent