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Reloading Question

HKman
I am having to use BR-2 large rifle primers on my 22-250 reloads.

I have been putting 39.2 grains of H380 under a 53GR Barnes TSX FB.

The Barnes book says you can go over this charge a little because of the ring lands groves in the bullet.

My question is ,

Do you think I should back off a few tenths of a grain to offset the large rifle primer?
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Comments

6 comments

Date Votes
  • HKman
    Yesterday I was playing with my 257 Roberts that I've had some accuracy problems with. I loaded up 3 rounds using 35 grains of Varget and a 115 gr Nosler B.T. The OAL was 2.920". This group of 3 averaged about 7/8" at 100 yards. I loaded up 3 more with the same powder and charge, except this time I made the OAL 2.900 and the grouping opened up to about 6". My question is, can .020" make that big of a difference in accuracy? Next question is, how good of a bullet is the Nosler B.T. on deer? I heard it said once that they have too thin a jacket to get adequate penetration, and my final question is, on bullets with a cannelure, such as the Speer Grand Slam, is it necessary to seat the bullet so the cannelure is at the rim of the case?
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  • perry shooter
    Hello IMHO you should STOP at once. Any time you are loading a round and you get a bulge you are one step away from a catastrophic case failure.Be cause of the need for a built in feed ramp on semi auto pistols the bottom of the case is unsuported in this area. The amount varies with each pistol .In the quest for better feeding some companys and BUBBA gun smiths polish this feed ramp too much . You eithe have too hot of a load or need to change your barrel. I have seen a case let go and the escapeing gas/pressure cause one or more rounds in the magazine go off with nowhere for these bullets to go it is not good.
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  • bperdue21
    pressure problem, post this is the reloading section and i am sure no nonsense will give you the best help you can ask for.
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  • bpost
    I'm not so sure the other posters understand the question is related to loaded not fired rounds.

    If the bulge is on LOADED rounds it is normal for 9MM and to some extent .45's.

    All sizing dies need to resize the brass to firmly hold the bullet. It has to account for thicker mil-spec brass and thinner walled products like Remington.

    So, when you load a bullet into the case it may leave a small but noticable bulge at the base of the bullet. This is doubly true when shooting cast lead bullets that are a bit over sized. It causes no harm.

    I loaded several thousand 9MM last night and if you would like I can send a picture to see if you have the same type of bulge.

    Conversely, if the bulge is on FIRED BRASS. Stop shooting it as the other Members have suggested.
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  • HKman
    Thank you bpost,You have answered my question. I appreciate all of your concerns, but the question was on loaded rounds not fired rounds.

    I have not had any problems so far and it is only about a .0015 bulge so I did'nt think it would be dangerous. I do know what an overloaded round looks like, and believe me I stay away from that.
    THANKS ALL!!!
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  • perry shooter
    Hello thanks 1958 my mistake thats whats happens when you get old . I am glad it is not on fired rounds and yes I have seen some reloaded ammo that because of a small resizer die and large bullets the case in profile looks almost COKE-BOTTLE My one question on this . If loading lead bullets it might be ok as they will squeeze down but you can run into high pressure in a 9MM if you use .357 diameter bullets designed for 357 mag ETC not 9MM.I think a 9MM should be .355 "Praise the hard-ball gun"
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