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Post by 7mmfreak on Nov 28, 2015 20:55:58 GMT -5
I just popped the stock off an hour ago and cleaned up the metal. I'll trim up the stock in the morning before I hit the range at noon. I'll post pics when is finished.
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Post by Deleted on Nov 28, 2015 21:01:47 GMT -5
Looks excellent Keith, not an air pocket to be seen.
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Post by 7mmfreak on Nov 28, 2015 21:08:07 GMT -5
Thanks, Cole. I've found that if you spread your compound really thin after mixing (I use an 18" x 12" piece of plexiglass and a 2" putty blade), fold it not whip it, and then apply it to both metal and stock you don't get air pockets.
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Post by Deleted on Nov 28, 2015 22:00:36 GMT -5
Great job excited to see your range report!
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Post by cuda on Nov 29, 2015 12:16:25 GMT -5
Nice work and write up waiting for more.
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Post by 7mmfreak on Nov 29, 2015 18:13:54 GMT -5
I got up this morning and spent too much time drinking coffe and not enough time finishing up the bedding job clean up. As a result Mike (mtj555) had to wait on me to get it into a serviceable state. Luckily it only took about 20 min after he got here. I still have some cleaning up and blending (I leave a lot of excess bedding material to ensure I can file and sand it into a good clean finish) to do before I re-paint. I threw a Leupold Vari-X III 2.5-8x36mm on it so we could get to the range. We pulled the plugs at range and did a quick bore-sight of my gun and his Hankins conversion of his Bad Bull. As she sits right now: I had intended to shoot a fouler round with a Bad Bull version of the Parker 275 BE (has machined relief grooves): I didn't see it in my bag of 275BE bullets so I just shot a five shot group after doing some dry-fires on my .308 and zeroing the Bushnell LRHS on that gun. First round out of the newly bedded gun hit pretty close so I just left the adjustments where they were and shot the Hankins standard 275BE over 78gn of IMR4198: After that I shot the only three of the Bad Bull version of the 275MH (weight 270ish after he machines them) using the same 78gn IMR4198: From there I switched over to H4198. I didn't clean between the powder change over and while I'm not really one for alibi rounds I would like to think the out of group round is due to that because it is so much greater than any other out of round group and the remaining four are much better. Who knows. These were 327MH over 70gn H4198: Next were some of the 316gn BOMB blems left over from when the dies had to be sent back for repair. These are what I originally tested the Hankins gun with. Smooth-Sized in a Swing-Lock die and shot over 70gn H4198: Last were the same bullet but Full-Formed in a Hankins die over the same powder charge: All my BE and MH bullets were sized with the same setting as the BOMB bullets. The BE and MH bullets seated with one easy hand and the BOMB seated with one hard hand or two easy hands. I will get some more bullets made up and test this gun out with the 300gn and 340gn BOMB.
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Post by rambler on Nov 29, 2015 18:21:14 GMT -5
Excellent data. The gun is really coming around with some good target results. I don't understand the bad bull bullets. My buddy has one and they shove those down his throat too, and the powder charge they demand...140gr IMR4350.
Keep up the good stuff. Maybe I missed it but were these shots at 100yd??
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Post by 7mmfreak on Nov 29, 2015 18:26:27 GMT -5
Yeah, I shot everything at 100yds today.
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Post by markb317 on Nov 29, 2015 22:11:44 GMT -5
Good information and shooting. Keep us posted as you do more development with the gun and bullets.
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Post by schunter on Nov 30, 2015 8:55:22 GMT -5
Great shooting and information. Gotta love the sand hills and the pines!
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Post by 7mmfreak on Dec 6, 2015 16:21:47 GMT -5
Bedded the trigger guard and made a small tweak to my FF die and shot it again today with 70gn and 73gn: I am not going to make any more adjustments to the die until I make some more bullets since there is no reason to get set up to shoot left over blems. I do think I need to loosen up the bullet fit. Unlike my McGowen I have to carefully index these when full-formed and right now require a little more seating pressure than I want. If I cannot get that sorted out I am going to shoot smooth-form bullets only in this barrel because I don't like pulling the break between shots. Any experiences to add in that could shorten my learning curve on this gun?
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Post by rambler on Dec 6, 2015 16:25:30 GMT -5
Good shooting in any case
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Post by Deleted on Dec 6, 2015 17:03:54 GMT -5
Have you tried any with a veggie wad yet? Good shooting indeed but I think the trigger puller is more capable in this situation.
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Post by 7mmfreak on Dec 6, 2015 17:56:08 GMT -5
Cole,
Thanks for the vote of confidence; I'd like to agree because the 25 rounds of .308 I warmed up with looked really good and I shot pretty well last week in a 5 day match validation.
I haven't yet shot any wads but will in the next few weeks; Mike has some veggies on order and he's going to loan me some. I have some wool on hand. I'm also going to try some other powders.
I'll get it sorted out.
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Post by 7mmfreak on Dec 9, 2015 16:57:04 GMT -5
Rob squared me away on full-forming this stupid Brux so that I don't have to index. My seating feels more consistent with his method too:
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Post by rangeball on Dec 9, 2015 17:05:13 GMT -5
d**n. Hard to complain about that.
Please share the sizing voodoo process.
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Post by 7mmfreak on Dec 9, 2015 18:29:51 GMT -5
Rob just told me to full form each bullet three times. I now have one witness mark on my die and three on my bullet punch; I spot drilled all three and filled them with a paint pen. I size it, rotate it two grooves, rinse and repeat.
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Post by Deleted on Dec 9, 2015 19:10:41 GMT -5
Glad it worked out for you! Rob always tells me to shoot but always fails to prove he can. haha
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Post by 7mmfreak on Dec 9, 2015 19:45:23 GMT -5
I still need to try veggie wads. Wool shoot at an average of .8 MoA and smell like torched mutton. Not sure I need them tho as naked has worked once again.
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Post by mtj555 on Dec 10, 2015 10:41:55 GMT -5
Keith, veggie wads should be at house. I'll be home today and I'll bring some to work tomorrow if you are around
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Post by GMB54-120 on Dec 10, 2015 11:26:01 GMT -5
Once upon a time Bob Parker posted pics of a BE that had relief grooves and he said he was going to sell. Never heard another word about them.
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Post by rangeball on Dec 10, 2015 12:07:31 GMT -5
Rob just told me to full form each bullet three times. I now have one witness mark on my die and three on my bullet punch; I spot drilled all three and filled them with a paint pen. I size it, rotate it two grooves, rinse and repeat. So instead of sending it through three times on the same grooves you rotate it? Interesting. With an 8 groove pacnor I guess you would do four times?
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Post by Deleted on Dec 10, 2015 12:40:24 GMT -5
My first few times of full forming didn't go very well for me in the accuracy department. The way Rob explained how he does full form has me re thinking full form. If I can achieve the same accuracy Kieth shot that would be great!
If you can use full form to seal up the barrel better wouldn't single powder loads be more doable?
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Post by 7mmfreak on Dec 10, 2015 19:19:12 GMT -5
I think as long as you rotate it about 50% you could achieve the same thing. I didn't see a real difference between 2 passes and 3 passes for precision or ease of loading but both were significantly better than 1 pass.
Mike, I'm in GA for guys graduating school in the AM. I'll be back tomorrow evening. We need to go shoot and I'll grab some wads from you. How did the deer hunt go?
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Post by jims on Dec 10, 2015 19:45:20 GMT -5
I can understand running it through the die several times, just unsure why one would rotate the bullet and not keep it in the same lands/grooves each time. I do not mind getting educated however.
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Post by Jon on Dec 11, 2015 3:27:12 GMT -5
I think that is why some like to index all lands and grooves are not always the same? I'm guessing by rotating you can eliminate some of that?
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Post by rob67 on Dec 11, 2015 5:49:07 GMT -5
I can understand running it through the die several times, just unsure why one would rotate the bullet and not keep it in the same lands/grooves each time. I do not mind getting educated however. When I first got my .392/.400 I hated the fact that I had to index bullets. It's one more step to perform while shooting, and also would be a pain while trying to load in low light conditions like a hunting blind. I found that sizing bullets 3x provides for more uniform bullets, but they still needed to be indexed. So I tried rotating bullets when sizing and that eliminated the need to index. I am not sure if one method of sizing is better than another, but I know that with 2 different .392's I have shot this will provide for sub .250 moa groups out to 300 yards. Keith thats some great results.
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Post by 7mmfreak on Dec 11, 2015 7:38:23 GMT -5
Thanks Rob, wouldn't have happened without your help. I was about ready to tape a bayonet on this one and spear hunt this year.
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Post by edge on Dec 11, 2015 12:10:50 GMT -5
Could it be, and this is just a guess?
The most accurate and concentric part of the bore should be the "minor diameter" the lands but FF sizing uses the grooves which may not be in the geometric center of the bore. When you FF you may be moving the center of gravity of the bullet away from the centerline of the bore. By rotating between passes you may be allowing the bullet to move back to the lands as a means of centering the bullet instead of the grooves.
edge.
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Post by rob67 on Dec 11, 2015 13:08:15 GMT -5
I was kind of thinking the same. If the bullet only fit one way ( having to index) was it also out of balance? When you pull the trigger the pressure of the powder is going to reform the bullet anyway.
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