Powder charge, case brand, primer brand, bullet type, etc. If you reload your ammunition, you already appreciate how much control you have over the different parameters of the cartridge. Increase accuracy by adjusting seating depth for precise loads.At my club there were half a dozen guys shooting centrefire, mainly 6mm PPCs. If you are not founding for Cci Magnum Primers Vs Standard, simply found out our links below . About Cci Magnum Primers Vs Standard. As I mentioned in a previous post, the CCI 450 is a magnum primer, but from what I heard it produces some extremely low standard deviations (SD) in muzzle velocity, meaning the ammo is extremely consistent shot-to-shot.Cci Magnum Primers Vs Standard. I was shooting nosler 130grain accubonds, new Norma brass,(May have been an issue) and cci br2 primers with n160.The clear favorite overall is the CCI 450 Small Rifle Magnum Primer by a huge margin. With Savage’s reputation for out-of-the-box accuracy that became my introduction and it developed over a couple of years with a good scope, new stock and Basix SAV2 trigger.So my friend was loading 130grain Nosler Ballistic tips, random brass cases, and 52 grain of reloader 19 with cci large rifle primers,(if I remember the primers correctly).
![]() ![]() That bullet is ‘jammed’ 0.010″.With Berger 80gn FB projectiles I found some serious encouragement around 30gn of ADI 8208. If the bullet is seated 0.010″ longer than ‘at the lands’ it’s already in solid contact with the rifling by the act of chambering the round. With bullet seated 0.010^ further into the case it gets a run-up before making contact with the rifling and is ‘jumped’ 0.010″. I shoot 100 and 200yds so prefer FB bullets in the 80-90gr range. I’ve reloaded Lapua 223 brass dozens of times and never had a split neck or loose primer pocket.2: Select the bullets you’ll use with care. Lapua costs plenty but if treated gently 200 match grade cases last for years, 200 cases being several cycles of competition shooting if you maintain cleaning and case preparation. My sequence runs something like this:1: Start with new brass all the same batch. For what follows it makes sense to assume we’re starting with a new gun or barrel or a second-hand gun you’re unfamiliar with. As you master break-in, fire-forming and load development you get an idea of what a good load might be. Whole milk powderEvery bullet is different so measurements must be done for each weight, type or manufacturer. I use Redding micrometer competition dies and without equivalent kit you won’t be in the hunt. Find the base-to-ogive measurement that reliably places your bullets and record it so you can set any amount of or your gun likes with your seating die. The 6BR is such a forgiving cartridge there’s a saying among top US shooters: “Use a standard Lapua case, CCI 450 primer, seat a Berger 105 at the lands and push it with 30gr of Varget (AR 2208). Barrel and chamber are big contributors to accuracy and little can be done about that without major gun surgery.Next of the major factors you can control are the brass, bullet, powder load and seating depth. There are many YouTube clips on what to look for and always using the same primer helps.The vital components are the locked bolt face and chamber, bullet and barrel and the first critical factor is all of these must be perfectly co-linear and symmetrical, with the locked bolt face exactly at right angles to this axis of symmetry. If after three shots the group looks dodgy it’s not going to improve after five.5: Check for signs of pressure (I use the primers as a guide). Start 10 per cent below maximum recommended loads and work up 0.5gn increments.4: Fire three-shot groups of each load. Initially you’re only fire-forming so top accuracy can’t be expected (you can fine-tune loads, bullets and seating depth to tighten groups later). Cci Primer Recommended Seating Depth Plus A FewIf you’re jamming your bullets it’s a good idea to test a round to make sure it chambers properly before heading to the range.Handloading for benchrest competition is about uniformity, your gun’s chamber sets the case form and the barrel is what it is. I may also load up to 15 shots of testing on the same day.I live in the tropics where heat and humidity are high and variable and learned the hard way that all competition shots and extras should be loaded at the same session. I load 50 rounds for the comp and up to 10 extras to get the gun going, check fall of shot at the change of distance, plus a few spares. Wordpress app for pcIf you don’t want to study old targets or look forward to hours at the loading bench cleaning, preparing and loading your ammo then centrefire benchrest isn’t for you. You can’t control the weather but you can learn to assess the best wind conditions on offer.Read and believe the SSAA’s Brendan Atkinson’s Ten Tips for Benchrest Shooters especially the first and last: Proper Preparation Prevents Poor Performance and Never, ever give up. You’ll never shoot a perfect competition but you can do better than you did last week or maybe better than anyone else on the day.
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