Win 748 primer question

[DRH1175]

I have been hearing that with Ball powder a Magnum rifle primer is recomended. In my 30-30 will I have to decrease the powder charge or does primers have nothing to do with that? My manual says Max charge with the 170gr bullet is 36.5 with W748 would this be true with both Standard and Mag rifle primers? Thanks I am a beginner and would like some help clarifying this.

 

[Guest]

Check which primer they used in load development. Every one of my manuals (except the Lee Modern Reloading) tells the brand and type of primer used. Speer (in the edition I have, not the latest) puts an asterisk next to loads where they used a magnum primer, at least in the 30-30. I believe if you look at where they provide COL, brand of case, etc. you will find the primer information. Use whatever they used for load development. As an aside, I have used mag primers in my 30-30 for a long time, and they work well. I also use them in just about any rifle where I'm loading a realitively heavy charge of ball powder, but I work up carefully if mag primers are not what was used to develop the data. Primer type will affect pressure.

 

[JD338]

DRH1175

A magnum primer will give you a hotter ignition. Any time you change components, you should start low and work up.
IMR3031 and IMR4895 are also good powder choices for the 30-30.

JD338

 

[YoteSmoker]

I have wondered about this myself. My only experience with w748 is with 223 in which i use win or fed small rifle standard primers, which i'm told are hot enough for 748 and hotter than cci which calls for a magnum. I have never had any trouble with the standard primers since I started using them 3 years ago in all kinds of temperatures.

 

[steve4102]

Load data is not a recipe, only a set of guidelines. I am assuming that you have or are planning to work up to 36.5gr of W748 in your rifle?
You may find that your rifle will show signs of pressure below 36.5. You may also find that your rifle can safely handle more than 36.5gr of W748 with either primer. There is only one way to find out and that is to "Start low and work up looking for signs of pressure along the way". Just because a manual says that XXgr of powder is max does not mean that XXgr is safe in Your rifle. Start low and work up.

 

[DRH1175]

I have several loads starting at 32.5 grs up to 36 I have a newer Marlin 336 I know this is a beginners question but how do you know if your load at your rifles peak. Does that have to do with flatened primers, cracked cases is there something else to look for. I have a few loads with CCI magnum primers and the rest with Federal standard rifle. Thanks!

 

[Guest]

If you're loading exactly the components used in the test (same brass, primer, powder, bullet brand, etc.) you can work up to the max charge looking for pressure signs. I can tell you that going above, if you're not comfortable with some more precise measuring tools and methods, is not a good idea for the beginning handloader. If you are, get a blade micrometer and begin to measure casehead expansion. There are good instructions in the front of numerous manuals about how and where to measure and what the results mean. If you're a novice handloader, I'd stick to what's in the manual, and not go above. Later on, when you have more experience, you can branch out to other sources (like software simulation or extrapolation for wildcatting) and you'll be knowledgeable enough in terms of what to look for, that you'll make sound decisions both at the bench and the range.

 

[DRH1175]

Yeah I am a beginner my max load that I made up is still less than the max load in my manual. I don't want to do any wildcating with any of my loads by no mean just wanting to get the most accurate fastest safe load I can! Thanks for all the help.

 

[Guest]

Don't be afraid to work up to the max load, unless you start to see pressure signs, but it sounds like you're doing things the right way. Remember that you can always try another batch with a little more powder, if everything is alright with these. Sometimes you don't get an opportunity to back off a tad.

 

[panhandlepr1]

I recently rechambered a Ruger No.1 in 223 to a 225 Winchester, mainly just because I didn't have a 225 Win. Load data for the 225 with Win 748 called for Fed 215's. The cartridge shoots much better with standard primers. I couldn't tell any difference between the two as far fps over my Oheler.

 

[DRH1175]

They state a Fed 210 which is what I used. A couple of the loads I used a CCI 250. But they seemed to loose a lot of accuracy. I have heard that Fed and Win are hotter than the cci's Standards is this correct. With W 748 Max is called out at 36.5 I worked up to a 36.0 but the most accurate by about a 1/2" was 35.0 in my .30-30 at 100yds Over all 2" groups with my lever action seems about as good as I can expect. I would like to get all the FPS I can get out of it. But Accuracy kills so I think I will go with the 35.0 and the 170gr Hornady FP's.

 

[rick smith]

I use standard primers with ball powder in quite a few cases. My 300WSM is more accurate and consistant FPS with WLRs. Mag primers don't do as well. I use 748 in both 308 and 7m/08 and have never used a mag primer. Case capacity has a lot to do with the necessity or lack thereof for the use of a mag primer. Work up loads with both and see which works better in your particular rifle.Rick.

 

[FOTIS]

I use 748 in my 223 and never used LMRP

 

[DRH1175]

Thanks I think that the standards will do a fine job than. I was just wondering since I read that somewhere. I kinda thought in a .30-30 there really isn't enough powder to have a problem. Thanks for the info.