7/13/2023 0 Comments Subsonic 223 load data h335If you get a suppressor, this load will also be slightly quieter & slightly less wear & tear on the can. The Hornady actually costs less at $0.16/ea which gets you to $0.225/each.īy Adjusting your load components, you can actually decrease the cost of the load (even down from $10/lb surplus powder), significantly reduce muzzle flash, while maintaining the exact same energy levels, while using, what I believe to be, a better projectile for hogs.boy, I hope my math was right.oh well, been embarassed before. This would only need 18.1 grains of powder to push it to 2440fps & the same 990ft lb e of your H335 load, and 50,000psi chamber pressure. Nato will allow up to 62Kpsi, but at your 25.2gr, your already past that kind of pressure as well. Using the same N120 powder, but a 75 grain Hornady projectile loaded to 2.25"COAL can get you down to burning 100% of the powder in only 8" of barrel. Quick check on Hodgdon site, and it showing a start load of H335 for 62gr bullet in 223 pressures of 19.3gr 47.5Kpsi, and Max load of 21.4gr 53.6Kpsi. The only ball powder that I experienced over pressure surges in high temperature was with H380 in the 22 250. The problem I had was in the summer months at temperatures 90 +, Id get significant changes in point of impact. They necessitate smaller powder charges, which means you have less to burn from the start, and they spend more time in the barrel, which has the side effect of giving the powder more time to burn. Even so H335 is one the most accurate powders Ive ever tried in the 223 Rem. You might also consider Heavier projectiles because they increase powder % burn in two ways. of IMR3031 with CCI standard small rifle primers and Hornady 55 grain FMJ-BT bullets. Our Favorite 223 remington load is 21.5 gr. More expensive N120 would push your cost up to $0.276This N120 load should burn 100% of the powder in 13" of barrel With a wide range of bullets to choose from you would be hard pressed not to find a load to fit your rifle or situation. Runing N120 & Nosler 55 BT at a longer 2.25" would only need 20.4grains to get to the same 50,000psi chamber pressure, and should go 2,850fps & get 990ft lb energy. The longer BT takes up more case capacity which increases chamber pressure. Your 55g Nosler BT is 0.810" long, while their Hornady 55g FMJ is shorter at 0.735". So QL almost exactly matches their velocity claim. Running their load thru QL nets 3,122fps at 50,000psi chamber pressure. Their manual lists it using Hornady 55grain FMJ at 2.244"COAL with a max of 20.7grains. It is much faster & burns 100% in a 16" barrel What fps do you actually get?This load probably costs you $0.20 for the bullet & $0.0364 in powder, if your using surplus powder. QL says your running about 47,000psi chamber pressure & should be getting about 2835fps & 982 ft lb energy. ![]() So you have 1.7grains of burning powder leaving your barrel (24g x 7% unburnt powder = 1.68g) 25 gr of h335 with a 55gr fmj has been my go to load since 1994. Ive loaded higher but that gave the best accuracy for me. I just reloaded a batch of 5.56 up to 25.6gr of H335. Your load: 24grains H335, Nosler 55g (0.810") should burn 93% of the powder if using a 16" barrel & 2.25"COAL There are subsonic 223 loads listed on hodgdons website. 223 Here are some of the comments: 24.5-25 gr of H335 is what I use under the 55’s. I don't have a chrono so can't tell you velocity, but it was definitely subsonic based on noise level.I use Quickload to play with subsonic & suppressed loads & to learn what "normal loads" are doing Hodgdon H335 Hodgdon H380 Hodgdon H414 Hodgdon H4350 Hodgdon H4831 (SC) Hodgdon. 243 with 7.9 grains of Trailboss behind a 105gr A-Max and held my breath. 7mm Remington Magnum (Hodgdon Data) reloading data with 302 loads. I called Hodgdon about the conflicting info and the rep told me 70% was just a guideline and not a hard set rule. ![]() After 400 the wind beats me up still have got some decent groups at 600. 6 moa to 300 - 400 yards from the bench if I do my part in my remington 700 vtr (1 in 9 ) with a choate tactical stock. The load data for a subsonic 243 load is published on Hodgdon's site, however the subsonic load is roughly 52% of the max load which contradicts the Trailboss instructions of setting your minimum load at 70% of max load. I tried have tried varget, 8208, and h335 amd got the best accuracy woth 23gr of h335 fed match primer in a win case jammed. I personally just went through what you are going through with my 243. Here is info straight from Hodgdon for developing loads using Trailboss for ANY jacketed rifle bullet. I can't say that this fella's info is the be-all, end-all, but he does state crimping is a no-no for subsonics. ![]() You may want to read this over before proceeding.
0 Comments
Leave a Reply. |