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6.5 PRC Part 3 - Adjusting Bullet Seating Depth to Achieve Better Groups
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- เผยแพร่เมื่อ 16 ส.ค. 2024
- This video is Part 3 in this series. I am loading rounds for 6.5 PRC using Hornady 153gr A-Tips, Lapua Brass, Federal 210 Primers and H1000 Powder.
In my previous video, I loaded 5 shot groups at 1/10th grain increments between 56.9 and 57.4 grains. I took the best group at 57.3 grains and loaded 5 shot groups at different seating depth. They were loaded between .015 from the lands to .033 from the lands.
Watch this video to see the results!
0:00 Intro
0:32 .015 from the lands
1:11 .017 from the lands
1:53 .019 from the lands
2:34 .021 from the lands
3:11 .023 from the lands
3:52 .025 from the lands
4:24 .027 from the lands
5:04 .029 from the lands
5:43 .031 from the lands
6:24 .033 from the lands
7:28 Final decision and what is next!
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I've done quite a bit of load development with the 6.5PRC over the past year or so with a Christensen ELR and a Bergara Premier Ridgeback. My Bergara loves the 153 A-Tips......I've found Hornady projectiles like quite a bit of Jump whereas Bergers the opposite. I load 55.8 grains of H1000, Fed 210M primers and a CBTO 2.300 with the 153 A-Tips (.060 jump in my gun). I easily get sub .50" groups rather easily with this load at 2940FPS from my LabRadar with single digit SD/ES. My Christensen ELR DOES NOT like anything heavier than 140's.......I've tried 143's, 147's, 153's etc... Berger 140 Hybrids and 140 ELDm's shoot exceptionally well for me in the Christensen. Just a tidbit of info for you, have been reloading for 30+ years. Cheers
Should have added.....these loads all were with Lapua or ADG brass. They both load nearly identical for me.
Thanks for the info! I will keep that in mind!
Enjoy your thorough and consistent process. Agree that low ES and SD is necessary for long distance. Looking forward to your one mile video!
I wanted to do that shoot yesterday, but it was 20+ mph side winds and it took me over an hour to work my way out to a mile with my Creedmoor. I was able to get my 1 mile hit, but man... I had to work for it.
I plan on getting back there this coming weekend with the prc.
Thanks for watching!
Good video. I believe you could greatly improve your shooting if you made a change in your bipod feed ( Skis)or put a slick surface under it like a High Density Cutting Board..( White Kitchen Cutting Board) and put stop in front of it to load up on.
May I suggest a Tuner or a TunerBrake..It shrank my groups on my AR10 a Lot.I have aEC Tuner Brake.If you can not get your groups down to a 1/2 MOA or better at 100 yards I'd try it..Enjoyed your videos as always. Im no expert by any means.. I just like to shoot and do almost everyday. Im retired and I work at a Gun Range so I get to see a lot of people and equipment.And some big name shooters come through there.Good Luck.
Thanks for watching!
Another awesome job Matt.
Thanks for watching!
Cannot wait for your one mile video,Matt! May I make one small suggestion? As I watched your shooting, it seemed at times that your bipod loading was just a tad inconsistent. It appeared to me to shift slightly between some shots.Any way you can affix a 2x4 horizontally in front of your bipod on that bench? At our range we have such cross boards in each shooting bench to minimize any bipod shift when loading it. I do not mean to imply that I am an expert shooter and "know it all".... I just thought it might help shrink those groups. If you cannot permanently attach the 2x4 at the front top of your shooting bench, I suggest trying a pair of large C-clamps (often used for holding wood when gluing) to hold the 2x4 tightly against the front edge of your shooting platform. Actually, you could also use a smaller dimension piece of wood..Just a suggestion, buddy...
It's funny you say that. I just had this same conversation about an hour ago with my Dad. The range that I am shooting at in Texas has bipod channels integrated into the shooting platform. And I liked it a lot! I will DEFINITELY be doing this moving forward!
I actually plan on going more. I was trying to get a load together for the trip that I am on right now. Unfortunately I did not get to do as much as I wanted due to less than ideal conditions for shooting. Bad weather put me back about 3 weeks. I am happy that I was able to get done what I was able to do at this point. More to come.
I get .25 inch groups wtih my 6.5 PRC with factory ammo. But pretty soon will start reloading for it bacause there'a no factory ammo anywhere. I have been saving all my brass so that will help me a lot.
Yes. Just make everything as consistent as possible when you resize, trim and what ever other steps you take for your brass prep.
I thought you would never get under an MOA. I hope that your mile target is a barn.
Well Steve, I felt the same way. But, much to my surprise, once I got down to Texas and did a test shoot, I found that the climate change worked greatly in my favor.
I was able to achieve groups of about .75 MOA and when I went to the mile range, I was able to work my way out to the 1 mile target and hit it 5 for 6 shots. And it was a 5 foot target. A barn would have definitely produced 6 for 6. I am sure of it.
New video to come.
Thanks for watching.
stevekiemele995..hahhahahahahahahaha..good one lol
Great work
Thanks for watching!
Have you tried 56.1-56.2gr at 0.015" off the land? That should put the load at OBT5 you can add 0.1-0.2 gr if the Group is not to your liking expected MV is 2915 fps
Also Hornady bullets would love 0.40" or 0.80" jump
There is always room for improvement. I will see what I can do.
Change to Federal 215M primers and duplicate your same loads
Expect group side to be half
I will keep that in mind.
Thanks for watching!
The only thing I do not see is the powder charge, how much H1000 are you using to get close to 3k fps?
57.3 gr
I’m shooting 56 gr with sub 1/2” moa but my speed average is 2797. I want to do more testing to get my speeds higher. Thanks for the videos.
@@brianreynolds1574 what recipe? Bullet, brass, primer, neck thickness and what bushing size?
@@mattsreloadingbench ADG brass, federal 210 primers, 143 eld-x bullet. The other info I would have to look in my book. I anneal every round and use a mandrel but dont recall the size.
@@brianreynolds1574 just watch your pressures with ADG brass. It is thicker in places and the manufacturer states to stay 10% under published max load data
i`d give it a go without the brake on front....
I just returned from my Texas trip. While I was down there, I hit the 1 mile target 5 times in a row! I'm happy with the end results.
Looks like load is too hot..
You are absolutely correct. I had ALOT of issues with that rifle.
These Groups are horrible. First I thought you shooting out to 500-700 yards.
Work on your shooting position. Your Rifle jumped almost every shot to the left.
I just returned from my Texas trip. While I was down there, I hit the 1 mile target 5 times in a row! I'm happy with the end results.
I was not happy either my groups then, but with the temp and humidity differences between Wisconsin and Texas, my groups were all touching. I was able to hit a mile target 5 of 6 shots. I am happy with the end results.
Watch how your gun recoils and forces you to rebuild your position after every shot. Not good. That bipod does not allow consistent recoil and will continue to frustrate your efforts to find a good load. Get a bipod that flexes and allows you to load it properly, or buy a quality front rest.
Well, I think that a huge part of the problem was that the rifle was too light. Not enough front end weight. I strapped 2 lbs of weights to it and it still jumped all over the place. I actually have equipped myself with a new rifle. There will be videos on that in the next few weeks.
Thanks for watching!
@@mattsreloadingbench It's jumping primarily because of the bipod. Using your off hand to place slight downward pressure on the forward scope ring will help tame that jump but the real solution is to get rid of that bipod. Also, pay close attention to the pressure between the rifle butt and your shoulder. It looks like you need more pressure and consistency there. Sorry if my comments seem harsh. I know how much time and money you're spending on this and am just trying to help.
No worries
Your DS and ES are good but your group size is far from good. What's up with that ?
@timhunter6541 I had alot of issues with that rifle. I concluded that it was no longer worth my time and I traded it for a Seekins Havak HIT. The Seekins is WAY better!