Go to the Hodgdon site and look at 296 loads. 23 is the start. from 23, 23.5, 24, 24.5 I had some failures to ignite with any SR mag primer. Only when I reached 25 to 26 gr did they all go off.
Cut down .460 brass resulted in every round going off with a LP mag primer. I then tried LP standard primers with all loads and all ignited but accuracy was better with the mag primer.
I was using a 335 gr LBT WLNGC.
I guess I am stupid by using book loads and not loading every caliber to max or over right off. Some with stupidity never load less then max with a new gun. I post a danger and those with knowledge dispute. It is not knowledge, it is only to dispute.

You are the only one in the world that cannot ignite h-110,296 in a 454 with the small rifle primers.

I simply do not beleive tha a small rifle primer won't ignite H-110/296.

When a beginner that loads starting loads and fails to get ignition and shoots another shot that blows up his gun, you are at fault. I am just not as smart as you.
I bow to your extreme knowledge and stupidity that can put anyone in danger.
I present facts, not to go against you. You can go as deep as hell allows but if I save one single person from harm I will be happy.

430man,

If what you say is true why would any reloading manual publish the starting loads they due given what you say happens??? The answer is because it doesn't happen and using SR primers in .454 starting loads is perfectly safe as evidenced by the multitude of factory loads available that all use SR primers too. While I'm sure you do truly want to help new loaders, telling them loading manuals are wrong and you need to ream out primer pockets isn't helping them either as it appears to be based on no one else's actual experience besides your own... While there may be other benefits to using LP primers, safety of loads doesn't appear to be one of them as a lot of us use starting loads with no issues despite your reports to the contrary.

We have to split ways here. ONE failure is too much and most shots DID fire. It is ONE that is too much but I had five or more with each primer test, I did not count. I needed a brass rod and hammer on the bench. It is strange to see all the powder in the bore behind the boolit with a little discolored powder at the rear.
I will tell you to stay near or at max with 296 or H110.
You fail to see I was using cast boolits so does Jacketed with more friction prevent it? Explain what bullet you shoot.
Some think I do this for fun or to dispute. I do this because I found a problem. So if you are comfortable, use cast, a starting load and shoot double action as fast as you can shoot.
Do I detect some doubt? Stainless scrap does not sell for much. Fingers have no value.

430man,

I suggest you contact Hodgdon and discuss with them the exact scenario you had occur, and ask that they change their minimum loads or recommend to handloaders to ream out the primer pockets to LP as they have much more at stake than any individual shooter does. When they respond to your inquiry, please post their response as it will likely state that you should use SR primers as they are within the SAAMI pressure specs. for the cartridge while LP primers are not, and thus they can't publish load data as such.

I have used both cast and jacketed bullets at minimum loads with SR primers in the cartridge and didn't get the results you saw. This doesn't say it's not possible, just that it also isn't the rule and may indicate a problem with a component you used (brass that is too soft or too brittle and not holding a tight crimp for an adequate time after firing to achieve powder ignition seems likely in your scenario...)

I should probably keep my nose outta this discussion, because I don’t really care for H110 powder but I do use it occasionally and I’ve used only trimmed down 460 cases in my 454 using the WLP primer. I’ve never experienced any squibs using H110 in any caliber and I’ve used it below its recommended minimum levels in a few calibers.

I have read a couple posts from several years ago where a person/s had a squib load with the 454 using a small rifle primer and the minimum starting load of H110, so 430Man is not alone experiencing this. If my memory serves me correctly, I remember one individual advising that when he switched to using a magnum small rifle primer he never again experienced the squib using H110 in the 454 Casull.

Anytime my hammer falls and I feel very little to no recoil I check my bore – If a fellow doesn’t follow that rule, all I can say is, it’s no fault but his own what happens to him or others on his next trigger pull.

430man didn't claim to have a sqibb load, he claimed that the powder didn't ignite and that that the bullet stuck in the barrel and I call BS on that claim, period. If there is not enought H-110/296 in the case or said another way too much air space then one will definately get very erractic results, but in now way do I beleive that the powder dind't ignite. He is the only one to have makes such claim

I just wanted to point out that the Rugers and Tarus have a 1:24 twist so the BFR is fast for the caliber at 1:16