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Rifles, Reloading, Optics, Equipment
Reloading
TSX vs TTSX seating depth
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<blockquote data-quote="Shootin4fun" data-source="post: 971990" data-attributes="member: 28741"><p>I have shot a fair amount of TSX and have a pretty accurate load. They have performed very well out of my 270win in bringing down game fast and hard. Now I'm trying TTSX because they're supposed to open up at a lower velocity, allowing for slightly longer shots, etc.</p><p></p><p>Anyway, the 130gr TTSX is .100" longer (!) than the TSX and the point on the ogive where it hits the comparator is .040" farther from the base of the bullet than on the TSX. (I am using a Hornady bullet comparator to measure ogive and I also measure COAL.) Now, if I load the TTSX at the same ogive length as the TSX so that the jump is close to the same, then it is about .040" deeper in the case and still .020" longer COAL. (If I leave the seating die the same as the TSX, the resulting TTSX round it .050" longer and doesn't even fit in the magazine.)</p><p></p><p>My question is, should I start with a a lower powder charge in order to avoid excessive pressure problems because the case capacity is being decreased? Will I get a higher velocity with a slightly lower charge because of that? Barnes says to seat them the same, what ever that means. Do I need to start from scratch??</p></blockquote><p></p>
[QUOTE="Shootin4fun, post: 971990, member: 28741"] I have shot a fair amount of TSX and have a pretty accurate load. They have performed very well out of my 270win in bringing down game fast and hard. Now I'm trying TTSX because they're supposed to open up at a lower velocity, allowing for slightly longer shots, etc. Anyway, the 130gr TTSX is .100" longer (!) than the TSX and the point on the ogive where it hits the comparator is .040" farther from the base of the bullet than on the TSX. (I am using a Hornady bullet comparator to measure ogive and I also measure COAL.) Now, if I load the TTSX at the same ogive length as the TSX so that the jump is close to the same, then it is about .040" deeper in the case and still .020" longer COAL. (If I leave the seating die the same as the TSX, the resulting TTSX round it .050" longer and doesn't even fit in the magazine.) My question is, should I start with a a lower powder charge in order to avoid excessive pressure problems because the case capacity is being decreased? Will I get a higher velocity with a slightly lower charge because of that? Barnes says to seat them the same, what ever that means. Do I need to start from scratch?? [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Reloading
TSX vs TTSX seating depth
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