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Long Range Hunting & Shooting
Pressure signs, lost three primers today
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<blockquote data-quote="ColoGuy970" data-source="post: 1594032" data-attributes="member: 103063"><p><img src="https://share.icloud.com/photos/09mAjBfEcOuOzso2jhRBgZk0Q" alt="" class="fr-fic fr-dii fr-draggable " style="" /> I am shooting a custom 7mm-300 win mag. The rifle is a PTG blueprinted action with a br firing pin. Connected to a 26" broughton 1:9 twist barrel. Assembled by mirage ULR in Dallas. I am shooting Berger 195's twenty thousands off of the lands. Using H1000 powder, with a federal match magnum primer. Two thousands neck tension. I have almost 300 rounds down the barrel. My first 100 pieces of nosler brass gave out due to primer pockets being too loose. I shot almost all of them three times. So I bought some Norma brass, I also bought some win brass to test out. My max load is 72.0 grains of H1000. I sized the brass and loaded a ladder test in each type of brass. From 68.0gn up to 72.1gn in .3gn steps so I can find the pressure in each type of brass. The Norma kicked two primers in the mid range of my test. The win kicked one out about the middle of my test also. I never had a sticky bolt, I had ejector smudges toward the top of both of my ladders. My FPS was in the 3050fps range at the higher end of the ladder. I need some advice from you all, as I have only been reloading for one year. It shot some pretty nice groups, despite the three primers in the mag well. Thank you for your advice.</p></blockquote><p></p>
[QUOTE="ColoGuy970, post: 1594032, member: 103063"] [IMG]https://share.icloud.com/photos/09mAjBfEcOuOzso2jhRBgZk0Q[/IMG] I am shooting a custom 7mm-300 win mag. The rifle is a PTG blueprinted action with a br firing pin. Connected to a 26” broughton 1:9 twist barrel. Assembled by mirage ULR in Dallas. I am shooting Berger 195’s twenty thousands off of the lands. Using H1000 powder, with a federal match magnum primer. Two thousands neck tension. I have almost 300 rounds down the barrel. My first 100 pieces of nosler brass gave out due to primer pockets being too loose. I shot almost all of them three times. So I bought some Norma brass, I also bought some win brass to test out. My max load is 72.0 grains of H1000. I sized the brass and loaded a ladder test in each type of brass. From 68.0gn up to 72.1gn in .3gn steps so I can find the pressure in each type of brass. The Norma kicked two primers in the mid range of my test. The win kicked one out about the middle of my test also. I never had a sticky bolt, I had ejector smudges toward the top of both of my ladders. My FPS was in the 3050fps range at the higher end of the ladder. I need some advice from you all, as I have only been reloading for one year. It shot some pretty nice groups, despite the three primers in the mag well. Thank you for your advice. [/QUOTE]
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Pressure signs, lost three primers today
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