Forums
New posts
Search forums
What's new
Articles
Latest reviews
Author list
Classifieds
Log in
Register
What's new
Search
Search
Search titles and first posts only
Search titles only
By:
New posts
Search forums
Menu
Log in
Register
Install the app
Install
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Fireforming the 6.5 Gibbs
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Reply to thread
Message
<blockquote data-quote="Sam11" data-source="post: 169355" data-attributes="member: 3589"><p>Hello: To start with I use 142 gr. SMK for fireforming and regular loads and both at COL = 3.445". The first time I had used 54.0 gr. H4831SC to fireform my 6.5 Gibbs and it was too hot. It made the primer pockets just a little bit loose. I dropped down to 52.0 gr. H4831SC for fireforming and it seems to be OK. Cases are formed good. For my regular loads I use 58.0 gr. H1000 but I hadn't check the velocity on that load. I had checked 59.0 gr. H1000 at 3,075 fps. I don't need the high end velocity and am trying to extend case life. You mentioned confusion on the lower powder loads for the 6.5-06 vs. the 270. It has something to do with the smaller diameter causing higher pressures even in the same basic case. Someone else who is smart could probably tells us why. I found out (almost the hard way) in trying to develop loads for my 6.5-300 Wby. by reasoning 300 Wby. loads and bullet weights would be the same for the 6.5-300. Well, no, it don't work that way. Real high pressure. Thankfully no damage, just a real tight bolt. Good thing I am very conservative when developing loads. By the way I really like my 6.5 Gibbs. It shoots great. Hope this helps. Sam.</p></blockquote><p></p>
[QUOTE="Sam11, post: 169355, member: 3589"] Hello: To start with I use 142 gr. SMK for fireforming and regular loads and both at COL = 3.445". The first time I had used 54.0 gr. H4831SC to fireform my 6.5 Gibbs and it was too hot. It made the primer pockets just a little bit loose. I dropped down to 52.0 gr. H4831SC for fireforming and it seems to be OK. Cases are formed good. For my regular loads I use 58.0 gr. H1000 but I hadn't check the velocity on that load. I had checked 59.0 gr. H1000 at 3,075 fps. I don't need the high end velocity and am trying to extend case life. You mentioned confusion on the lower powder loads for the 6.5-06 vs. the 270. It has something to do with the smaller diameter causing higher pressures even in the same basic case. Someone else who is smart could probably tells us why. I found out (almost the hard way) in trying to develop loads for my 6.5-300 Wby. by reasoning 300 Wby. loads and bullet weights would be the same for the 6.5-300. Well, no, it don't work that way. Real high pressure. Thankfully no damage, just a real tight bolt. Good thing I am very conservative when developing loads. By the way I really like my 6.5 Gibbs. It shoots great. Hope this helps. Sam. [/QUOTE]
Insert quotes…
Verification
Post reply
Forums
Rifles, Reloading, Optics, Equipment
Reloading
Fireforming the 6.5 Gibbs
Top