I am new to Grendel reloading, and would like group opinions on the success of using H-335 as a propellant. H-335 is a powder I have used with great success in reloading 5.56. I only have 1 reloading book with Grendel recipes, and have downloaded the recipes from this forum, and both have H-335 recipes. Any comments are appreciated.
Reloading 6.5 Grendel with H-335, opinions
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I use H-335 with 100 grain bullets and has proven accurate and clean burning in my 16" 6.5 Grendel. I have used 29.0 grains, CCI 450 primers with Sierra 100 grain Varmint and Nosler 100 grain Ballistic Tip hunting bullet. I'm going to try H-335 with 107 grain SMK. I'm not after screaming velocity but this load functions and is plenty accurate for varmints. For heavier 120-125 grain bullets I'm using CFE 223 powder.
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There's a bunch of H335 data in the Grendel reloading handbook. You can find links to it by doing a search for "6.5 Grendel Reoloadin Handbook" in this forum or through Google.shootersnotes.com
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If you look at the pressure data for H335, it's one of the most efficient and versatile powders for 6.5 Grendel. Since it's a ball powder, I would want to know its temp stability characteristics for the region I lived in. If you use a powder dispenser in your set up, it will meter great for you.
Looking at Hodgdon's data (pages 49 and 50) in Volume I of the 6.5 Grendel Reloading Handbooks, you can see that pressures are relatively low, while velocities are some of the highest across 85gr through 123gr bullet weights, which is evidence of its efficiency.NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
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A fellow 6.5 Grendel shooter and I have been using CFE 223 powder with 123 match bullets. Previously he used Accurate 2520 but lately has not found any to buy. Other popular powders are IMR8208XBR, AR Comp, Levrevolution and I like Accurate 2230/Exterminator for lighter bullets. Another friend has gotten good loads with BLC2 and I have used TAC and Winchester 748.
Highest velocities seem to come from the CFE 223 and Levrevolution from what test I've read.
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Originally posted by TacBlade View PostWhat are most here using for powder? I have a ton of H335 and Varget?
Even as a co-author of them both, I refer to them all the time, and learn more when studying the pressure data from big industry companies like Hodgdon's when looking at powder efficiency and projectile weights.
CFE223 is one of my go-to powders now because of the work of Bwild97. I am getting ready to do some load development with N530, which is one of the powders that worked really well for Lapua when they did their testing. Speed from CFE is excellent, as is accuracy for me.NRA Basic, Pistol, Rifle, Shotgun, RSO
CCW, CQM, DM, Long Range Rifle Instructor
6.5 Grendel Reloading Handbooks & chamber brushes can be found here:
www.AR15buildbox.com
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