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Long Range Hunting & Shooting
Improving the 308 Win performance
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<blockquote data-quote="nralifer" data-source="post: 2734809" data-attributes="member: 94556"><p>As a practical matter I would simply try the CCI450 in SRP brass in cold weather under range conditions. I have never had an ignition problem down to temps in the low 30F with LVR, and one guy from Canada, Manitoba as I recall, has used them in much colder temps without hang fires. Ball powders, especially partially flattened ones like LVR have more surface area/grain volume so for that reason alone should ignite easier. I share your concerns about ignition and cold temps with SRPs. I have used the 6.5x47 with our high BC 135BD2 bullet from a 26" 1:7 Bartlein barrel and get 3030fps with no concerns. Blows factory Creeds out of the water. Hunted Antelope in mid 30f weather with SRPs with no sign of hang fires. The 308 Win has got a lot more potential power with the SRP brass. I can safely shoot a 175 gr BD2 bullet from a 24" Bartlein to 2850 and from a 26" Savage to 2930 fps using Lapua Palma brass. Our high BC 150 gr BD2 bullet can safely be pushed well over 3050+fps from either barrel with LVR and SRP brass. The pic below shows no significant primer flattening, only some cratering which is par for the course with Savage actions because of greater clearance of the firing pin with the hole in the bolt. There was no ejector mark or heavy bolt lift. Extraction was normal.</p></blockquote><p></p>
[QUOTE="nralifer, post: 2734809, member: 94556"] As a practical matter I would simply try the CCI450 in SRP brass in cold weather under range conditions. I have never had an ignition problem down to temps in the low 30F with LVR, and one guy from Canada, Manitoba as I recall, has used them in much colder temps without hang fires. Ball powders, especially partially flattened ones like LVR have more surface area/grain volume so for that reason alone should ignite easier. I share your concerns about ignition and cold temps with SRPs. I have used the 6.5x47 with our high BC 135BD2 bullet from a 26” 1:7 Bartlein barrel and get 3030fps with no concerns. Blows factory Creeds out of the water. Hunted Antelope in mid 30f weather with SRPs with no sign of hang fires. The 308 Win has got a lot more potential power with the SRP brass. I can safely shoot a 175 gr BD2 bullet from a 24” Bartlein to 2850 and from a 26” Savage to 2930 fps using Lapua Palma brass. Our high BC 150 gr BD2 bullet can safely be pushed well over 3050+fps from either barrel with LVR and SRP brass. The pic below shows no significant primer flattening, only some cratering which is par for the course with Savage actions because of greater clearance of the firing pin with the hole in the bolt. There was no ejector mark or heavy bolt lift. Extraction was normal. [/QUOTE]
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