I'm new to Accurate Shooter and looking for help with Quickload. With the right data can Quickload provide info for this wildcat and can someone possibly run this for me. Trying to find starting load info using Retumbo, RL 26 or IMR 7977 or MRP. If someone can help me with this I just need to know what info to provide and I'm planning to use the Black Ace 131gr. GA Precision built my barreled action on a Rem 700 LA with a Bartein fast twist barrel and I finished it with an HS Precision stock and DBM. And help that can be provided is greatly appreciated.
25 PRC
- Thread starter Chuck Hollowood
- Start date
It's the 6.5 PRC necked down to 25 caliber with no other alterations.
I've built a few, they are spectacular with the 131. PM me if you need more info
Orr89rocz
Silver $$ Contributor
I had this info saved as i wanted a 25 wsm but went another way. MRP would be similar to re22. Your prc case would come in a few grains less than the wsm
“In the November/December 2006 issue of Rifle Shooter magazine, BuckPope did another article on a wildcat he calls the .25 Pronghorn. It's based on the 270/7mm/300 WSM case necked down to .257" bore diameter. For the project, he used a M70 Stainless Classic rifle in 300 WSM. He had it rebarreled with a Dan Pederson (Classic Barrel & Gunworks) 26" stainless fluted barrel with a 1:10" twist.
Buck used Redding Custom .25/300 WSM dies, and new Winchester 270 WSM brass. The 270 WSM brass only has to be necked down from .277" to .257", so it was a very easy process.
Buck listed the following data, which seems to easily beat the performance of the .257 Weatherby Magnum in the reloading manuals I looked at:
64.4 grns RL22 Nosler Partition 100 grn @ 3729 fps
65.7 grns RL22 Nosler Partition 100 grn @ 3779 fps
63.2 grns RL22 Nosler AccuBond 110 grn @ 3613 fps
63.2 grns IMR7828 Barnes Triple Shock 100 grn @ 3706 fps
61.0 grns IMR7828 Hornady SST 117 grn @ 3527 fps”
“In the November/December 2006 issue of Rifle Shooter magazine, BuckPope did another article on a wildcat he calls the .25 Pronghorn. It's based on the 270/7mm/300 WSM case necked down to .257" bore diameter. For the project, he used a M70 Stainless Classic rifle in 300 WSM. He had it rebarreled with a Dan Pederson (Classic Barrel & Gunworks) 26" stainless fluted barrel with a 1:10" twist.
Buck used Redding Custom .25/300 WSM dies, and new Winchester 270 WSM brass. The 270 WSM brass only has to be necked down from .277" to .257", so it was a very easy process.
Buck listed the following data, which seems to easily beat the performance of the .257 Weatherby Magnum in the reloading manuals I looked at:
64.4 grns RL22 Nosler Partition 100 grn @ 3729 fps
65.7 grns RL22 Nosler Partition 100 grn @ 3779 fps
63.2 grns RL22 Nosler AccuBond 110 grn @ 3613 fps
63.2 grns IMR7828 Barnes Triple Shock 100 grn @ 3706 fps
61.0 grns IMR7828 Hornady SST 117 grn @ 3527 fps”
The 6.5 PRC measures in the neighborhood of 68 grains capacity while the 25 WSM is about 81.5 which a tad more than a few grains.
Hypothesizing the performance comparison between Re-22 and any other powder can be problematic due to the slightly erratic performance of Re-22 in recent years.
I have been running the 6.5 PRC necked down to take the Blackjack bullet for a few months without any desire to report since I'm working in a directions most others don't. However, given a 26" barrel and the necked down 6.5 PRC case I get about 67 grains of capacity. Using Re-25, MRP and VVN-560, I get about 3,180 fps. The drawback I'm seeing is the Hornady brass. So I've switch over my brass. These loads are being run through DBM with an OAL of 2.925" based on leaving out the spacer in those mags.
I'm also in the beginning stages of making and shooting the .25 WSM case with the same bullets.
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Orr89rocz
Silver $$ Contributor
I have used a good bit of re22 and not noticed anything erratic about it yet other than it is somewhat temp sensitive. Alot of my load data books show nearly identical to identical amounts for mrp and re22, and several places online say mrp is re22 but i’m not sure. Thats why i said they are similar, believe both made by same company so i read.
But i thought the prc was bigger than what it is. Most 270 wsm data comes in at mid high 60’s grains max loads while the prc is around 58-61, for similar bullet weight so indeed more than a few grains difference
To clarify, for decades, Re-22 has been found to respond differently from batch to to batch, sometimes with excessive over pressure, so I was using the term 'erratic' instead another descriptor.
Load data using grains of powder per load and bullet can be variable. That's why I use the water volume for each case as a fixed amount. It can and does vary slightly by case manufacturer, but you don't see the variations as you do with reading powder weights.
I'm running a 1:7.5" for the 25 PRC but I've dropped down to a 1:7 for the smaller cartridges.
If this is directed to me, I don't recall shooting any groups at 200 yards as that yardage is not useful to me for data collection. I started at 100 for a few development groups then moved to 300 yards for load development and then straight to 1,000 yards.
ok - I was just looking for how they group at any yardage.
It's been a little while but time for an update. I worked up a load of 60.7 gr Retumbo seated @ .010" and was getting sub 1/2 groups at 200 yds with an ES of 7 fps. Unfortunately I ran out of Retumbo and of course it's currently unavailable. I did have enough to finish loading about 30 rds. I was lucky enough too get my hands on 3 lbs of H1000 and I have a few other powders that should work and will build a load with the H1000. Once that's done and we have some long range steel targets set up I'll repost my results for the Retumbo and H1000.
WHat brass are you running now?
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