Andy4600
Member
What are the advantages/disadvantages of a 30 vs 40 degree shoulder in a round, if all else is equal?
I've read there is a slight accuracy advantage in a 30 degree shoulder. Any truth to this?
I've also read somehing about less throat erosion and longer barrel life in a 30 degree shoulder...but the proof on this was vague.
Other items I am fairly sure of:
30 degree should feed better (but this matters little in a bolt gun).
40 degree has better case life due to less expansion.
Anything else?
I've read there is a slight accuracy advantage in a 30 degree shoulder. Any truth to this?
I've also read somehing about less throat erosion and longer barrel life in a 30 degree shoulder...but the proof on this was vague.
Other items I am fairly sure of:
30 degree should feed better (but this matters little in a bolt gun).
40 degree has better case life due to less expansion.
Anything else?