Justice1327
Well-Known Member
Well, I just completed load development on my short action Customs 7 mm Creedmoor.
I started off with 100 cases of the same lot number Peterson 6.5 Creedmoor, small rifle, primers Brass I use a mandrel and two steps to enlarge it and then used a short action Customs die and .308 bushing to resize the brass. loaded these with Sierra, 120 grn SP bullets and 42 gr of shooters world match. I shot the first 5 to zero in the scope,cleaned and then shot Three sets of five shots each and I cleaned in between each five shot group. I've been finished off the remaining 100 rounds cleaning every 10 to 15 shots. very little copper and I was surprised at how clean the powder is. I used GRT to determine what my pressure was going to be and what OBT I could explore. I switched over to Nosler ballistic tip 120 grain,and I started with 44 gr of SW match and worked my way up to 45.8 grns. As you can see the attached picture, the groups started to come apart at about 45.4 grains. Through the use of GRT, I settled on 44.92 grains.
very happy with the results and looking forward to taking it hunting November 10.
I also have a really good load using Sierra 140 grain SBT bullets. But I'm running low on those and haven't used my Nosler ballistic tips in a while.
In the attached pics you can see the bottom of the cases and primers. No excessive pressure signs. When I fireform brass I take out the ejector plunger, if not mechanical, and shoot the brass twice before I reinstall the plunger. I noticed that the hole where the plunger goes it had a burr on it. I called Defiance and they said to mail it in and they would fix it. I dont have any files or tools that small to file it out.
Rifle specs.
24" Benchmark CF, 1:8 tw (didn't have 1:9)
Defiance SA AntiX
MDT Hnt 26
4-12x40 Leupold VXR red dot
weight is 7.2 lbs
Smith work was by SAC.
I started off with 100 cases of the same lot number Peterson 6.5 Creedmoor, small rifle, primers Brass I use a mandrel and two steps to enlarge it and then used a short action Customs die and .308 bushing to resize the brass. loaded these with Sierra, 120 grn SP bullets and 42 gr of shooters world match. I shot the first 5 to zero in the scope,cleaned and then shot Three sets of five shots each and I cleaned in between each five shot group. I've been finished off the remaining 100 rounds cleaning every 10 to 15 shots. very little copper and I was surprised at how clean the powder is. I used GRT to determine what my pressure was going to be and what OBT I could explore. I switched over to Nosler ballistic tip 120 grain,and I started with 44 gr of SW match and worked my way up to 45.8 grns. As you can see the attached picture, the groups started to come apart at about 45.4 grains. Through the use of GRT, I settled on 44.92 grains.
very happy with the results and looking forward to taking it hunting November 10.
I also have a really good load using Sierra 140 grain SBT bullets. But I'm running low on those and haven't used my Nosler ballistic tips in a while.
In the attached pics you can see the bottom of the cases and primers. No excessive pressure signs. When I fireform brass I take out the ejector plunger, if not mechanical, and shoot the brass twice before I reinstall the plunger. I noticed that the hole where the plunger goes it had a burr on it. I called Defiance and they said to mail it in and they would fix it. I dont have any files or tools that small to file it out.
Rifle specs.
24" Benchmark CF, 1:8 tw (didn't have 1:9)
Defiance SA AntiX
MDT Hnt 26
4-12x40 Leupold VXR red dot
weight is 7.2 lbs
Smith work was by SAC.
Attachments
Last edited:
