Every powder in the Ramshot family is double-based and spherical shaped. Loads worked up above 80 will still work accurately as long as the temp stays above 80 degrees. According to my magneto speed @ 34 degree I got the following: Load of 60 grs Hunter, with CCI 200, Winchester brass, and 165 Hornady Interbond. Ramshot Hunter powder 140 Amax-.005 off the lands CCI large rifle primers 2798 fps groups are around .250 - .375 @100 yards This load shows on signs of over pressure in my rifle. Building ammunition without taking the time to accurately measure powder can be incredibly dangerous. Ramshot Big Boy powder was renamed Ramshot Magnum in 2001. In the 7MM-08 I get just under 2750fps with one Temps didn't affect accuracy. Their data showed the most temperature sensitive powder in their test to be IMR 4895, not a ball powder. A particular powder can be improved re temperature stability for certain combinations, within a certain envelope which is specific to the following three main parameters/aspects The caliber. Accurate XMR 3100 134. For a better experience, please enable JavaScript in your browser before proceeding. JavaScript is disabled. To maximize performance, the ballistics experts at Hodgdon Powder Co., Inc. have developed a comprehensive Reloading Guide to provide handloaders with current data for Ramshot Powders. I'm talking 150 fps difference. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. Excellent flow characteristics and small grain size allow trouble-free loading in small diameter case necks. It may not display this or other websites correctly. Don't over-think powder temp sensitivity. I would imagine all powders change slightly with fluctuations in temperature. You are using an out of date browser. Hodgdon H4831 136. Vihta Vuori N160 129. I have been using a lot of IMR-7828SSC with excellent IMPORTANT ORDERING INFORMATION : If you would like to purchase nitro powder mail order we will require proof that you hold a valid Firearm or Shotgun Certificate. 8208 may offer an edge in temp stability, but accuracy has been too close to call and TAC has given me SDs less than half what I can get from 8208. I do believe powder "sensitivity" is more marketing gimmick than reality. I like em. Since virtually every powder has a different sensitivity to temperature, compiling such a list would be a massive undertaking. I'll have to see if the relationship holds true when it gets above 75 Deg this summer.. Ramshot X-Terminator X-Terminator is a double-base spherical powder designed for high volume varmint hunters who prefer the 223 Remington and demand a clean burning, accurate powder. Ramshot "TAC" is one of the most temperature stable double based powders available. All Rights Reserved. Never want to go through that again. Temperature Sensitivity * * * * * H4350 is the long reigning king of temperature stability and is the go to choice for nearly ever reloader I���ve met who is loading for .260 REM or 6.5 CM. For my Sako 06, Hunter is my favorite powder. Philip P. Massaro is the President of Massaro Ballistic Laboratories, LLC, a custom ammunition company, which is comfortably nestled in between the Hudson River and Catskill Mountains of Upstate New York. Vihta Vuori N560 130. But heat and cold still play a key role in the overall formula. Ramshot Magnum Smokeless Rifle Powder (8 Lbs) by WESTERN & ACCURATE POWDERThe muzzle velocities achieved in the magnum class of cartridges are some of the highest in the industry. Winchester WMR 135. Been working up a hunting load for this years Mule deer hunt and with our 105+ deg. I may try that the next time out.. You must log in or register to reply here. Ramshot Smokeless Powder is newly manufactured, meaning it hasn't been pulled from loaded ammunition and it's not military surplus powder. I am in my 3rd month of reloading, and the temp is dropping fast here in Alaska. Powder temp sensitivity is an often over looked part of load development for long range precision shooting but a very important aspect none the less. Ramshot-HUNTER® or Accurate-MAGPRO®. Honestly, we just aren���t interested in that powder because of what we���ve experienced with it in terms of temperature sensitivity. Scot Brig 4831 132. I only use powders that are temp stable. It wasn't a consideration 20 years ago, before it became an advertising buzz-word. New for 2021: Vihtavuori N568 rifle powder Vihtavuori has launched the N568, a new N500 series high energy rifle powder for 2021, perfect for the most popular ��� In the 300WSM Hunter gives me superb accuracy combined with top velocities. IMR 4831 131. From our our own product lines, depending on the caliber/s we suggest two spherical powders. Will work with this load hope to get better. There is, however, a line, beyond which tolerance ceases to be a virtue Save Share Ramshot Magnum, MAGPRO, and MRP bracket N560 in the QL chart and the first two appear to be available. Advancements in powder have reduced its sensitivity to temperature fluctuations. H4350 is not temp senitive as it is in there extreme line of powders. 44 gr. I am currently working up some loads for my 7mm rem mag and am wondering how worried I need to be about temp changes. The weight of the projectile/bullet. I need to tag onto this thread as this is something that I have some real questions about. The other variable I had not considered was whether or not a magnum primer would make a difference with the ramshot hunter.. Sniper’s Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics.